Research Article | | Peer-Reviewed

In-silico Characterization of the Phytochemicals of Phyllanthus Niruri Against Nephrolithiasis

Received: 7 February 2026     Accepted: 21 February 2026     Published: 17 March 2026
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Abstract

Nephrolithiasis, which is also known as kidney stone disease, is a regular urological disorder that came with the formation of crystalline deposits within the renal system. It is very significant that the regular and convention procedures for the prevention and treatment of kidney stone diseases including lithotripsy and pharmacotherapy have limitations ranging from recurrence, expensive and great adverse effects, which necessitate the search for safer and highly effective alternatives in phytochemicals with proven biological activities. Phyllanthus niruri is locally and traditionally recognized and active for its antiurolithiatic and nephroprotective effects, with its various diverse bioactive constituents such as flavonoids, alkaloids, tannins, and phenolic compounds. In this work we employed molecular docking and ADMET (Absorption, Distribution, Metabolism, Excretion, and Toxicity) analyses to screen phytochemicals generated from Phyllanthus niruri as potential inhibitors of nephrolithiasis associated proteins. 64 phytochemicals were retrieved from literature and was used to perform docking against the 7KLL protein target using AutoDock and AutoDock Vina integrated in PyRx. Binding affinities, inhibition constants as well as protein-ligands interactions were analyzed using Biovia Discovery Studio and PyMOL. ADMET predictions were performed using online softweb Admetsar2 to assess pharmacokinetic and safety profiles. Amariin (−8.8 kcal/mol), Ellagitannin (8.5 kcal/mol), Miquelianin (-8.6 kcal/mol) Nirurin (-8.5 kcal/mol), Quercetin 3-0-beta-D-glucuronopyranoside (-8.6 kcal/mol) demonstrated strong binding affinities comparable to or higher than standard drugs allopurinol (−5.9 kcal/mol), levofloxacin (−.6.7 kcal/mol), and nifedipine (−5. kcal/mol). used for comparison. The ADMET evaluation shown that the top ligands possess favorable drug-likeness, oral bioavailability, and non-toxicity. The results suggest that Phyllanthus niruri phytochemicals possess promising inhibitory potential against nephrolithiasis targets and may serve as leads for the development of safe, plant-based therapeutics.

Published in Journal of Drug Design and Medicinal Chemistry (Volume 12, Issue 1)
DOI 10.11648/j.jddmc.20261201.11
Page(s) 1-18
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2026. Published by Science Publishing Group

Keywords

Phyllanthus Niruri, Nephrolithiasis, Molecular Docking, ADMET Analysis, Phytochemicals, Autodock Vina

1. Introduction
Nephrolithiasis, which is also known as kidney stone disease is a regular metabolical and urological disorder that came with the formation of crystalline deposits of insoluble salts, majorly calcium oxalate within the renal system. Over recent decades, kidney stone disease has been increased significantly globally with an estimated lifetime risk of 10–12% in men and 7–9% in women . The disease causes considerable economic and healthcare burdens, most especially in the regions with very hot climates and inadequate access to medical facilities that can aid the prevention and treatment. Patho-physiologically, the formation of stone develops from the supersaturation of urinary tract with crystalline insoluble substances such as uric acid, calcium, oxalate and phosphate usually aggravated by metabolic disorders, dehydration as well as dietary factors .
The existing management procedures not excluding pharmacological interventions like thiazide diuretics, allopurinol, and citrate therapy as well as minimally invasive surgical techniques like extracorporeal shock wave lithotripsy (ESWL) and ureteroscopy With all their efficacy and potentiality towards inhibiting the disease, they are frequently resulted to high recurrence rates, postoperative pain, infection risks, and drugs induced toxicity Consequent on the aforementioned there is need to explore the natural bioactive compounds as alternative or adjunct therapeutic agent to diminish the existence of this disease and it has gained enormous and increasing attention.
Phyllanthus niruri (Figure 1) belong to the family of Phyllanthaceae and it is commonly referred to as “stone breaker” or “chanca piedra,” has been reported that it is widely employed in traditional medicine systems in some area of the world such as Ayurveda and Chinese medicine for exhibiting hepatoprotective, antiviral, and nephroprotective properties [6,]. Studies on the Phytochemicals that are made up of the Phyllanthus niruri have revealed the presence of flavonoids, lignans, tannins, and alkaloids which possess diverse pharmacological activities including antioxidant, anti-inflammatory, and antiurolithiatic effects .
Figure 1. The Phillanthus niruri (extracted from ).
Computational chemistry has made it easier and possible to screen and predict bioactive compounds with high precision through in-silico methods such as molecular docking and ADMET analysis etc These tools enable us to identify the potential inhibitors through modeling interactions between ligands and target proteins while also predicting pharmacokinetic properties through the available computational tools. This study, therefore, aims to investigate the molecular dockings and pharmacokinetic potential of phytochemicals derived from Phyllanthus niruri against nephrolithiasis-associated targets.
2. Materials and Methods
2.1. Ligand Preparation
A total of sixty-four phytochemicals (Table 1) previously reported in Phyllanthus niruri were selected from literature databases alongside some standard pharmaceutical drugs used for the treatment of nephrolithiasis. The 3D structures of all ligands were retrieved from PubChem (https://pubchem.ncbi.nlm.nih.gov) in SDF format and converted to PDB using the SMILES Online Translator (https://cactus.nci.nih.gov/translate/). Energy minimization was performed to obtain the most stable conformers. The phytochemicals identified and examined include (-)-Fustin, (S)-2-Amino-7-Hydroxytetralin, 2-Hydroxycinnamic acid, 4-Coumaric acid, 4-Desmethoxypropoxyl-4-methoxy Rabeprazole, Ageratriol, Amariin, Ambrosic acid, Apigenin, Apocynin, Astragalin, Brevifolincarboxylic acid, Catechol Dimethylether-d6, Catechol, Citral, Corilagin, Corymboside, Diosgenin, Elaeocarpusin, Ellagic acid, Ellagitannin, Epicatechin, Fisetin, Fumaric acid, Fustin, Gallic acid, Gallocatechin, Hinokinin, Hyperoside, Hypophyllanthin, Isocitric acid, Isoleucine, Isolintetralin, Kaempferol, Limonene, Lintetralin, Lupeol, Maleic acid, Methyl brevifolincarboxylate, Miquelianin, Myricitrin, Niranthin, Nirphyllin, Nirtetralin, Nirurin, Norsecurinine, Orientin, P-Cymene, Phyllanthin, Phyllnirurin, Phyllochrysine, Phyltetralin, Protocatechuic acid, Pyrogallol, Quercetin, Quercetin-3-O-beta-D-glucuronopyranoside, Quercetol, Quercitrin, Repandusinic acid A, Repandusinic acid B, Rutin, Trifolin, Urinatetralin and Vitexin and three standard drugs Allopurinol, Levofloxacin and Nifedipine were employed for comparison in this study. Each of these compounds was evaluated based on its molecular weight, molecular formula, 2D structure, and molecular structure to assess their potential efficacy in treating nephrolithiasis.
Table 1. Shows the Identified compounds in PHYLLANTHUS NIRURI and three pharmaceutical drugs used to cure NEPHROLITHIASIS with their respective molecular weight, 2D structure and molecular structure.

S/N

Ligands/ Pubchem Cid

Molecular Weight (G/Mol)

Molecular Formular

3D Structure

Molecular Structure

L1

(-)-Fustin

(12310641)

288.25

C15H12O6

L2

(S)-2-Amino-7-Hydroxytetralin

(14750918)

163.22

C10H13NO

L3

2-Hydroxycinnamic acid

(637540)

164.16

C9H8O3

L4

4-Coumaric acid

(637542)

164.16

C9H8O3

L5

4-Desmethoxypropoxyl-4-methoxy Rabeprazole

(11558510)

301.4

C15H15N3O2S

L6

Ageratriol

(181557)

252.35

C15H24O3

L7

Amariin

(5482103)

968.6

C41H28O28

L8

Ambrosic acid

(75368818)

264.32

C15H20O4

L9

Apigenin

(5280443)

270.24

C15H10O5

L10

Apocynin

(2214)

166.17

C9H10O3

L11

Astragalin

(5282102)

448.4

C21H20O11

L12

Brevifolincarboxylic acid

(9838995)

292.2

C13H8O8

L13

Catechol Dimethylether-d6

(12209214)

144.2

C8H10O2

L14

Catechol

(289)

110.11

C6H6O2

L15

Citral

(638011)

152.23

C10H16O

L16

Corilagin

(73568)

634.5

C27H22O18

L17

Corymboside

(13644660)

564.5

C26H28O14

L18

Diosgenin

(99474)

414.6

C27H42O3

L19

Elaeocarpusin

(3086477)

1110.8

C47H34O32

L20

Ellagic acid

(5281855)

302.18

C14H6O8

L21

Ellagitannin

(10033935

992.7

C44H32O27

L22

Epicatechin

(72276)

290.27

C15H14O6

L23

Fisetin

(5281614)

286.24

C15H10O6

L24

Fumaric acid

(444972)

116.07

C4H4O4

L25

Fustin

(5317435)

288.25

C15H12O6

L26

Gallic acid

(370)

170.12

C7H6O5

L27

Gallocatechin

(65084)

306.27

C15H14O7

L28

Hinokinin

(442879)

354.4

C20H18O6

L29

Hyperoside

(5281643)

464.4

C21H20O12

L30

Hypophyllanthin

(182140)

430.5

C24H30O7

L31

Isocitric acid

(1198)

192.12

C6H8O7

L32

Isoleucine

(6306)

131.17

C6H13NO2

L33

Isolintetralin

(101241675)

400.5

C23H28O6

L34

Kaempferol

(5280863)

286.24

C15H10O6

L35

Limonene

(2231)

136.23

C10H16

L36

Lintetralin

(11361584)

400.5

C23H28O6

L37

Lupeol

(259846)

426.7

C30H50O

L38

Maleic acid

(444266)

116.07

C4H4O4

L39

Methyl brevifolincarboxylate

(5319518)

306.22

C14H10O8

L40

Miquelianin

(5274585)

478.4

C21H18O13

L41

Myricitrin

(5281673)

464.4

C21H20O12

L42

Niranthin

(13989915)

432.5

C24H32O7

L43

Nirphyllin

(5491556)

448.5

C24H32O8

L44

Nirtetralin

(182644)

430.5

C24H30O7

L45

Nirurin

(125896)

664.6

C32H40O15

L46

Norsecurinine

(11106439)

203.24

C12H13NO2

L47

Orientin

(5281675)

448.4

C21H20O11

L48

P-Cymene

(7463)

134.22

C10H14

L49

Phyllanthin

(358901)

418.5

C24H34O6

L50

Phyllnirurin

(179963)

342.4

C20H22O5

L51

Phyllochrysine

(267769)

217.26

C13H15NO2

L52

Phyltetralin

(11223782)

416.5

C24H32O6

L53

Protocatechuic acid

(72)

154.12

C7H6O4

L54

Pyrogallol

(1057)

126.11

C6H6O3

L55

Quercetin

(5280343)

302.23

C15H10O7

L56

Quercetin-3-O-beta-D-glucuronopyranoside

(5274585)

478.4

C21H18O13

L57

Quercetol

(5280343)

302.23

C15H10O7

L58

Quercitrin

(5280459)

448.4

C21H20O11

L59

Repandusinic acid A

(147900)

970.7

C41H30O28

L60

Repandusinic acid B

(16131091)

1138.8

C48H34O33

L61

Rutin

(5280805)

610.5

C27H30O16

L62

Trifolin

(5282149)

448.4

C21H20O11

L63

Urinatetralin

(11760779)

384.4

C22H24O6

L64

Vitexin

(5280441)

432.4

C21H20O10

L65

Allopurinol

(135401907)

136.11

C5H4N4O

L66

Levofloxacin

(149096)

361.4

C18H20FN3O4

L67

Nifedipine

(4485)

346.3

C17H18N2O6

2.2. Target Protein Selection
We obtained the crystal structure of the nephrolithiasis associated receptor (PDB ID: 7KLL) (Figure 2) from the Protein Data Bank (https://www.rcsb.org) . It was subjected to thorough cleaning and treatment by removing all water molecules, ligand and heteroatoms using Biovia Discovery Studio 4.5 to make the receptor ready and suitable for docking. The active site of the receptor was clearly defined based on the literature reported binding residues.
Figure 2. Crystal structure of the nephrolithiasis receptor (PDB ID: 7KLL).
2.3. Docking Simulation
Molecular docking simulations is an essential tool in computational chemistry for exploring ligand-receptor interactions in computer aided drug discovery, using specialized software tools, softwebs, and protocols to predict binding affinities and optimize molecular interactions. In this study, the molecular docking was carried out using the AutoDock and AutoDock Vina integrated inside the PyRx virtual screening platform The grid box dimensions were set to 86.3271 × 97.6678 × 89.3663 Å in the X, Y, and Z axes while the grid center coordinates set to 9.1266, −2.2417, and 9.1787 Å. The exhaustiveness parameter was maintained at the default value of 8 to maintain speed and accuracy. Binding affinities were recorded in kcal/mol, the inhibition constant was calculated, and the docked complexes were visualized using PyMOL and Biovia Discovery Studio to identify hydrogen bonds, hydrophobic interactions, and π-π stacking.
2.4. Absorption, Distribution, Metabolism, Excretion, and Toxicity (ADMET) Prediction
The top-ranking ligands were subjected to ADMET property prediction using SwissADME (http://www.swissadme.ch) and AdmetSar2, Key pharmacokinetic parameters; absorption (GIT permeability, P-gp substrate), distribution (BBB permeability, plasma protein binding), metabolism (CYP450 inhibition), excretion, and toxicity (hepatotoxicity, carcinogenicity, AMES mutagenicity) were evaluated and identified. Drug-likeness was assessed according to Lipinski’s rule of five criteria.
2.5. Data
Docking scores were analyzed to determine ligand–protein affinities, with more negative binding energy values indicating stronger binding. Compounds were ranked and compared to standard drugs. ADMET parameters were used to identify the most promising candidates with optimal bioavailability and safety profiles.
3. Results
3.1. Molecular Docking Analysis
Molecular docking was conducted to predict the binding affinities and interaction profiles of 64 phytochemicals from Phyllanthus niruri against the nephrolithiasis-associated protein target (PDB ID: 7KLL). The docking results, Table 2 revealed that several compounds exhibited strong binding energies, suggesting favorable interactions within the active site of the receptor. Among the phytochemicals, Amariin (−8.8 kcal/mol), Ellagitannin (8.5 kcal/mol), Miquelianin (-8.6 kcal/mol) Nirurin (-8.5 kcal/mol), Quercetin 3-0-beta-D-glucuronopyranoside (-8.6 kcal/mol) demonstrated the lowest (most favorable) binding energies, outperforming standard drugs such as allopurinol (−5.9 kcal/mol), levofloxacin (−.6.7 kcal/mol), and nifedipine (−5.0 kcal/mol).
Table 2. Shows the ligands, their binding affinity values and their respective Inhibition Constant.

S/N

LIGANDS

BINDING AFFINITY (Kcal/Mol)

Inhibition Constant K1 (µM)

1

(-)-Fustin

-7

7.43

2

(S)-2-Amino-7-Hydroxytetralin

-6.1

33.92

3

2-Hydroxycinnamic acid

-6.9

8.80

4

4-Coumaric acid

-6.2

28.65

5

4-Desmethoxypropoxyl-4-methoxy Rabeprazole

-6.2

28.65

6

Ageratriol

-6.3

24.20

7

Amariin

-8.8

0.36

8

Ambrosic acid

-6.4

20.45

9

Apigenin

-7.9

1.63

10

Apocynin

-5.8

56.27

11

Astragalin

-7.8

1.93

12

Brevifolincarboxylic acid

-7.5

3.20

13

Catechol Dimethylether-d6

-4.9

256.86

14

Catechol

-4.8

304.07

15

Citral

-5.1

183.30

16

Corilagin

-7.9

1.63

17

Corymboside

-7.7

2.28

18

Diosgenin

-7.6

2.70

19

Elaeocarpusin

-7.3

4.48

20

Ellagic acid

-7.7

2.28

21

Ellagitannin

-8.5

0.59

22

Epicatechin

-7.4

3.78

23

Fisetin

-7.2

5.30

24

Fumaric acid

-5.3

130.80

25

Fustin

-7

7.43

26

Gallic acid

-6.8

10.41

27

Gallocatechin

-7.2

5.30

28

Hinokinin

-6.3

24.20

29

Hyperoside

-7.6

2.70

30

Hypophyllanthin

-5.8

56.27

31

Isocitric acid

-6

40.15

32

Isoleucine

-4.8

304.07

33

Isolintetralin

-5.9

47.53

34

Kaempferol

-7.6

2.70

35

Limonene

-5.5

93.34

36

Lintetralin

-6.4

20.45

37

Lupeol

-8.1

1.16

38

Maleic acid

-5.1

183.30

39

Methyl brevifolincarboxylate

-7.4

3.78

40

Miquelianin

-8.6

0.50

41

Myricitrin

-7.6

2.70

42

Niranthin

-4.7

359.95

43

Nirphyllin

-6

40.15

44

Nirtetralin

-5.9

47.53

45

Nirurin

-8.5

0.59

46

Norsecurinine

-7.1

6.28

47

Orientin

-7.6

2.70

48

P-Cymene

-5.7

66.61

49

Phyllanthin

-5.2

154.84

50

Phyllnirurin

-6.9

8.80

51

Phyllochrysine

-7.2

5.30

52

Phyltetralin

-6

40.15

53

Protocatechuic acid

-6.4

20.45

54

Pyrogallol

-5.2

154.84

55

Quercetin

-7.5

3.20

56

Quercetin-3-O-beta-D-glucuronopyranoside

-8.6

0.50

57

Quercetol

7.5

3.20

58

Quercitrin

-8.1

1.16

59

Repandusinic acid A

-7.5

3.20

60

Repandusinic acid B

-7.8

1.93

61

Rutin

-7.9

1.63

62

Trifolin

-7.2

5.30

63

Urinatetralin

-6.7

12.33

64

Vitexin

-7.6

2.70

65

Allopurinol

-5.9

47.53

66

Levofloxacin

-6.7

12.33

67

Nefedipine

-5.9

47.53

The top ligands were stabilized through multiple hydrogen bonds, π–π stacking, and hydrophobic interactions with key active site residues of the 7KLL protein Table 3. For example, Amariin and Miquelianin formed hydrogen bonds with residues ASP 183 and HIS 141, which are critical for ligand anchorage and enzyme inhibition. Visualization in Biovia Discovery Studio confirmed well-defined hydrogen bond networks and aromatic stacking interactions, Table 4 that contribute to enhanced binding stability.
Table 3. The docking scores, inhibition constant and amino acids residues of Interaction between the selected Phytochemicals and standard drug against 7KLL based on their binding affinity and inhibition constant compare to the standard drug.

Ligands

Name

Binding Affinity ΔG (kcal/mol)

Inhibition constant K1 (µM)

Residue involved in the interaction

L7

Amariin

-8.8

0.36

ASP: 183, ASN: 139, THR: 136, HIS: 141

L21

Ellagitannin

-8.5

0.59

VAL: 182, GLU: 202, TYR: 197, LYS: 191, HIS: 187, SER: 199, THR: 201, ASP: 204

L40

Miquelianin

-8.6

0.50

ASP: 183, GLU: 186, SER: 137, GLY: 142, ASN: 130, ASP: 128, THR: 246, HIS: 141, PRO: 20

L45

Nirurin

-8.5

0.59

ARG: 222, ARG: 225, LYS: 172, TYR: 218, ASP: 173, PRO: 116, LYS: 150

L56

Quercetin 3-0-beta-D-glucuronopyranoside

-8.6

0.50

ASP: 181, ASP: 183, PRO: 20, SER: 137, ASN: 130, HIS: 141, THR: 246, ASP: 128

L65

Allopurinol (standard drug)

-5.9

47.53

GLU: 186, ASP: 183, ASP: 128

L66

Levofloxacin (standard drug)

-6.7

12.33

PRO: 20, ASN: 139, HIS: 141, SER: 137

L67

Nefedipine (standard drug)

-5.9

47.53

LYS: 17, SER: 16, PHE: 15, GLU: 25, PHE: 55

Table 4. 3D and 2D of bonded and non-bonded interaction with the receptors and ligand.

Receptor + Ligand

3D STRUCTURE

2D STRUCTURE

7KLL + L7

7KLL + L21

7KLL + L40

7KLL + L45

7KLL + L56

These findings indicate that the phytochemicals possess structural and functional complementarity to the nephrolithiasis-associated target, implying potential inhibitory activity relevant to the prevention or dissolution of kidney stones.
3.2. Admet Analysis and Pharmacokinetics
ADMET analysis of the top 5 ligands was conducted using SwissADME and AdmeSar2 to predict their pharmacokinetic properties. The results, Table 5 showed that compounds such as Amariin,, Ellagitannin, Miquelianin, Nirurin, Quercetin-3-O-beta-D-glucuronopyranoside complied with Lipinski’s Rule of Five, indicating good oral bioavailability. All the top ligands demonstrated high gastrointestinal (GIT) absorption, non-inhibition of CYP2D6 and CYP3A4 enzymes, and non-hepatotoxic properties. None of the compounds exhibited AMES mutagenicity or carcinogenic potential. Furthermore, the compounds showed moderate plasma protein binding and low blood-brain barrier (BBB) permeability, which are desirable for drugs targeting renal tissues.
Table 5. Shows the ligands and their drug-like parameters.

Ligands

Compound

Molecular weight (g/mol)

Hydrogen Bond acceptor (HBA)

Hydrogen bond donor (HBD)

Log P

Rule of five violation

Heavy atom

L1

(-)-Fustin

288.25

6

4

-0.10

0

21

L2

(S)-2-Amino-7-Hydroxytetralin

163.22

2

2

1.21

0

12

L3

2-Hydroxycinnamic acid

164.16

3

2

1.22

0

12

L4

4-Coumaric acid

164.16

3

2

0.96

0

12

L5

4-Desmethoxypropoxyl-4-methoxy Rabeprazole

301.4

4

1

0.96

0

21

L6

Ageratriol

252.35

3

3

1.24

0

18

L7

Amariin

968.6

28

13

-1.67

3

69

L8

Ambrosic acid

264.32

4

1

1.51

0

19

L9

Apigenin

270.24

5

3

0.52

0

20

L10

Apocynin

166.17

3

1

0.51

0

12

L11

Astragalin

448.4

11

7

-0.09

2

32

L12

Brevifolincarboxylic acid

292.2

8

4

-0.11

0

21

L13

Catechol Dimethylether-d6

144.2

2

0

1.48

0

10

L14

Catechol

110.11

2

2

0.79

0

8

L15

Citral

152.23

1

0

2.49

0

11

L16

Corilagin

634.5

18

11

-0.30

3

45

L17

Corymboside

564.5

14

10

-1.32

3

40

L18

Diosgenin

414.6

3

1

4.29

1

30

L19

Elaeocarpusin

1110.8

32

15

-2.59

3

79

L20

Ellagic acid

302.18

8

4

0.14

0

22

L21

Ellagitannin

992.7

27

13

-0.07

3

71

L22

Epicatechin

290.27

6

5

0.24

0

21

L23

Fisetin

286.24

6

4

-0.03

0

21

L24

Fumaric acid

116.07

4

2

-0.29

0

8

L25

Fustin

288.25

6

4

-0.10

0

21

L26

Gallic acid

170.12

5

4

-0.16

0

12

L27

Gallocatechin

306.27

7

6

-0.29

1

22

L28

Hinokinin

354.4

6

0

2.71

0

26

L29

Hyperoside

464.4

12

8

-0.38

2

33

L30

Hypophyllanthin

430.5

7

0

1.91

0

31

L31

Isocitric acid

192.12

7

4

-0.06

0

13

L32

Isoleucine

131.17

3

2

-0.15

0

9

L33

Isolintetralin

400.5

6

0

2.23

0

29

L34

Kaempferol

286.24

6

4

-0.03

0

21

L35

Limonene

136.23

0

0

2.72

0

10

L36

Lintetralin

400.5

6

0

2.23

0

29

L37

Lupeol

426.7

1

1

4.72

1

31

L38

Maleic acid

116.07

4

2

-0.29

0

8

L39

Methyl brevifolincarboxylate

306.22

8

3

-0.09

0

22

L40

Miquelianin

478.4

13

8

-0.45

2

34

L41

Myricitrin

464.4

12

8

-0.07

2

33

L42

Niranthin

432.5

7

0

1.91

0

31

L43

Nirphyllin

448.5

8

1

1.39

0

32

L44

Nirtetralin

430.5

7

0

1.91

0

31

L45

Nirurin

664.6

15

9

-0.04

3

47

L46

Norsecurinine

203.24

3

0

0.63

0

15

L47

Orientin

448.4

11

8

-0.14

2

32

L48

P-Cymene

134.22

0

0

2.51

1

10

L49

Phyllanthin

418.5

6

0

2.43

0

30

L50

Phyllnirurin

342.4

5

1

2.38

0

25

L51

Phyllochrysine

217.26

3

0

1.02

0

16

L52

Phyltetralin

416.5

6

0

2.03

0

30

L53

Protocatechuic acid

154.12

4

3

0.26

0

11

L54

Pyrogallol

126.11

3

3

0.18

0

9

L55

Quercetin

302.23

7

5

-0.56

0

22

L56

Quercetin-3-O-beta-D-glucuronopyranoside

478.4

13

8

-0.45

2

34

L57

Quercetol

302.23

7

5

-0.56

0

22

L58

Quercitrin

448.4

11

7

-1.84

2

32

L59

Repandusinic acid A

970.7

28

15

-0.21

3

69

L60

Repandusinic acid B

1138.8

33

18

-1.39

3

81

L61

Rutin

610.5

16

10

-0.33

3

43

L62

Trifolin

448.4

11

7

-0.06

2

32

L63

Urinatetralin

384.4

6

0

2.42

0

28

L64

Vitexin

432.4

10

7

-0.02

1

31

L65

Allopurinol

136.11

3

2

-0.35

0

10

L66

Levofloxacin

361.4

6

1

-0.39

0

26

L67

Nifedipine

346.3

6

1

0.52

0

25

Amariin, Ellagitannin and Miquelianin demonstrated superior pharmacokinetic behavior, exhibiting optimal solubility and permeability profiles, while phyllanthin displayed higher lipophilicity (LogP 3.9), suggesting effective membrane permeability. Collectively, the ADMET results, Table 6 confirmed the suitability of these compounds as drug-like candidates with minimal predicted toxicity and acceptable absorption and metabolism parameters.
Table 6. ADME analysis and Pharmacokinetics of the derivatives.

Parameter

Amariin

Ellagitannin

Miquelianin

Nirurin

Quercetin-3-O-beta-D-glucuronopyranoside

Molecular Weight (g/mol)

968.64

992.71

478.36

664.65

478.36

LogP (Lipophilicity)

-1.67

-0.07

-0.45

-0.04

-0.45

Hydrogen Bond Donors (HBD)

13

13

8

9

8

Hydrogen Bond Acceptors (HBA)

28

27

13

15

13

Topological Polar Surface Area (TPSA) (Ų)

456.32

447.09

227.58

245.29

227.58

Number of Rotatable Bonds

3

5

4

8

4

Lipinski’s Rule of Five Violations

3

3

2

3

2

Veber’s Rule Compliance (Yes/No)

No

No

No

No

No

Gastrointestinal (GI) Absorption (High/Low)

Low

Low

Low

Low

Low

Blood-Brain Barrier (BBB) Permeability (Yes/No)

No

No

No

No

No

P-glycoprotein (P-gp) Substrate (Yes/No)

Yes

Yes

Yes

Yes

Yes

CYP450 Enzyme Inhibition

CYP3A4, CYP1A2

CYP3A4, CYP1A2

CYP3A4

CYP3A4, CYP2D6

CYP3A4

Bioavailability Score

0.17

0.17

0.11

0.17

0.11

Water Solubility (Good/Poor)

Good

Poor

Good

Good

Good

LogS (Solubility Index)

-3.24

-5.95

-3.09

-3.11

-3.09

Human Intestinal Absorption (HIA) (%)

18%

22%

35%

27%

38%

Renal Clearance (Yes/No)

No

No

Yes

No

Yes

Hepatotoxicity

Inactive (0.98)

Inactive (0.75)

Inactive (0.75)

Inactive (0.98)

Inactive

Mutagenicity

Inactive (0.82)

Inactive (0.60)

Inactive (0.68)

Inactive (0.82)

Inactive (0.82)

Respiratory Toxicity

Inactive (0.99)

Active (0.71)

Active (0.83)

Inactive (0.77)

Inactive

Cardiotoxicity

Inactive (0.91)

Inactive (0.57)

Inactive (0.61)

Inactive (0.91)

Inactive

Immunotoxicity

Inactive (0.99)

Active (0.97)

Active (0.58)

Inactive (0.99)

Inactive (0.99)

4. Discussion
The integration of in-silico docking and ADMET evaluation in this study provided mechanistic insights into the potential antiurolithiatic properties of Phyllanthus niruri phytochemicals. The strong binding affinities exhibited by Amarin, Ellagitannin, and Miquelianin suggest their ability to interact effectively with the nephrolithiasis-related protein (7KLL). These interactions are likely to inhibit crystal formation or aggregation processes that underline renal stone development. Ellagitannin, a hydrolyzable tannin, has been reported in earlier studies to exhibit significant antioxidant and calcium oxalate crystal inhibitory activity . Its multiple hydroxyl groups contribute to strong hydrogen bonding and chelating capacity, which may underlie its binding to active site residues of 7KLL. Similarly, Amarin and Miquelianin possess polyphenolic structures capable of modulating oxidative stress pathways and preventing lipid peroxidation, both implicated in nephrolithiasis progression . The observed binding energies of the phytochemicals surpass those of standard drugs such as allopurinol, indicating that natural compounds could serve as competitive or adjunct inhibitors with lower toxicity risk. Furthermore, ADMET profiling confirmed that these phytochemicals possess favorable pharmacokinetic properties and meet key criteria for oral bioavailability and safety, this supports previous findings where Phyllanthus niruri extracts demonstrated renal protective, diuretic, and antioxidant activities Collectively, the study reinforces the ethnopharmacological use of Phyllanthus niruri as a natural remedy for kidney stones and validates the application of computational screening in identifying plant-derived lead compounds with therapeutic potential. Nevertheless, while molecular docking provides predictive insights, in vitro and in vivo validation remains necessary to establish precise inhibitory mechanisms, bioavailability, and efficacy in biological systems.
5. Conclusions
This study explored the molecular interactions and pharmacokinetic potential of phytochemicals derived from Phyllanthus niruri for the prevention and treatment of nephrolithiasis using in silico methods. The docking analysis revealed that compounds such as Amarin, Ellagitannin, Miquelianin, Nirurin, Quercetin-3-O-beta-D-glucuronopyranoside exhibited superior binding affinities compared with standard nephrolithiasis drugs. ADMET evaluations further confirmed their drug-likeness, safety, and favorable absorption and metabolism characteristics. The findings highlight Phyllanthus niruri as a promising natural source of bioactive compounds capable of modulating nephrolithiasis-associated targets. These results provide a foundation for subsequent experimental validation and potential drug development aimed at safer, cost-effective, and plant-based interventions for kidney stone disease.
Abbreviations

ADMET

Absorption, Distribution, Metabolism, Excretion, and Toxicity

Author Contributions
Adeboye Omolara Olubunmi: Conceptualization, Resources, Supervision, Writing – review & editing
Agboluaje Saheed Alabi: Formal Analysis, Investigation, Methodology, Software, Validation
Salami Leke Peter: Data Curation, Project Administration, Visualization, Writing – original draft
Conflicts of Interest
There are no conflicts of interest.
References
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[2] Leonardo Ferreira Fontenelle, Thiago Dias Sarti (2019), Kidney Stones: Treatment and Prevention. Am Fam Physician. 2019 Apr 15; 99(8): 490-496.
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[6] Navneet Kaur, Baljinder Kaur & Geetika Sirhindi (2017), Phytochemistry and Pharmacology of Phyllanthus niruri L.: A Review, Phytother. Res.
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Cite This Article
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    Olubunmi, A. O., Alabi, A. S., Peter, S. L. (2026). In-silico Characterization of the Phytochemicals of Phyllanthus Niruri Against Nephrolithiasis. Journal of Drug Design and Medicinal Chemistry, 12(1), 1-18. https://doi.org/10.11648/j.jddmc.20261201.11

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    Olubunmi, A. O.; Alabi, A. S.; Peter, S. L. In-silico Characterization of the Phytochemicals of Phyllanthus Niruri Against Nephrolithiasis. J. Drug Des. Med. Chem. 2026, 12(1), 1-18. doi: 10.11648/j.jddmc.20261201.11

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    AMA Style

    Olubunmi AO, Alabi AS, Peter SL. In-silico Characterization of the Phytochemicals of Phyllanthus Niruri Against Nephrolithiasis. J Drug Des Med Chem. 2026;12(1):1-18. doi: 10.11648/j.jddmc.20261201.11

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  • @article{10.11648/j.jddmc.20261201.11,
      author = {Adeboye Omolara Olubunmi and Agboluaje Saheed Alabi and Salami Leke Peter},
      title = {In-silico Characterization of the Phytochemicals of Phyllanthus Niruri Against Nephrolithiasis},
      journal = {Journal of Drug Design and Medicinal Chemistry},
      volume = {12},
      number = {1},
      pages = {1-18},
      doi = {10.11648/j.jddmc.20261201.11},
      url = {https://doi.org/10.11648/j.jddmc.20261201.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jddmc.20261201.11},
      abstract = {Nephrolithiasis, which is also known as kidney stone disease, is a regular urological disorder that came with the formation of crystalline deposits within the renal system. It is very significant that the regular and convention procedures for the prevention and treatment of kidney stone diseases including lithotripsy and pharmacotherapy have limitations ranging from recurrence, expensive and great adverse effects, which necessitate the search for safer and highly effective alternatives in phytochemicals with proven biological activities. Phyllanthus niruri is locally and traditionally recognized and active for its antiurolithiatic and nephroprotective effects, with its various diverse bioactive constituents such as flavonoids, alkaloids, tannins, and phenolic compounds. In this work we employed molecular docking and ADMET (Absorption, Distribution, Metabolism, Excretion, and Toxicity) analyses to screen phytochemicals generated from Phyllanthus niruri as potential inhibitors of nephrolithiasis associated proteins. 64 phytochemicals were retrieved from literature and was used to perform docking against the 7KLL protein target using AutoDock and AutoDock Vina integrated in PyRx. Binding affinities, inhibition constants as well as protein-ligands interactions were analyzed using Biovia Discovery Studio and PyMOL. ADMET predictions were performed using online softweb Admetsar2 to assess pharmacokinetic and safety profiles. Amariin (−8.8 kcal/mol), Ellagitannin (8.5 kcal/mol), Miquelianin (-8.6 kcal/mol) Nirurin (-8.5 kcal/mol), Quercetin 3-0-beta-D-glucuronopyranoside (-8.6 kcal/mol) demonstrated strong binding affinities comparable to or higher than standard drugs allopurinol (−5.9 kcal/mol), levofloxacin (−.6.7 kcal/mol), and nifedipine (−5. kcal/mol). used for comparison. The ADMET evaluation shown that the top ligands possess favorable drug-likeness, oral bioavailability, and non-toxicity. The results suggest that Phyllanthus niruri phytochemicals possess promising inhibitory potential against nephrolithiasis targets and may serve as leads for the development of safe, plant-based therapeutics.},
     year = {2026}
    }
    

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  • TY  - JOUR
    T1  - In-silico Characterization of the Phytochemicals of Phyllanthus Niruri Against Nephrolithiasis
    AU  - Adeboye Omolara Olubunmi
    AU  - Agboluaje Saheed Alabi
    AU  - Salami Leke Peter
    Y1  - 2026/03/17
    PY  - 2026
    N1  - https://doi.org/10.11648/j.jddmc.20261201.11
    DO  - 10.11648/j.jddmc.20261201.11
    T2  - Journal of Drug Design and Medicinal Chemistry
    JF  - Journal of Drug Design and Medicinal Chemistry
    JO  - Journal of Drug Design and Medicinal Chemistry
    SP  - 1
    EP  - 18
    PB  - Science Publishing Group
    SN  - 2472-3576
    UR  - https://doi.org/10.11648/j.jddmc.20261201.11
    AB  - Nephrolithiasis, which is also known as kidney stone disease, is a regular urological disorder that came with the formation of crystalline deposits within the renal system. It is very significant that the regular and convention procedures for the prevention and treatment of kidney stone diseases including lithotripsy and pharmacotherapy have limitations ranging from recurrence, expensive and great adverse effects, which necessitate the search for safer and highly effective alternatives in phytochemicals with proven biological activities. Phyllanthus niruri is locally and traditionally recognized and active for its antiurolithiatic and nephroprotective effects, with its various diverse bioactive constituents such as flavonoids, alkaloids, tannins, and phenolic compounds. In this work we employed molecular docking and ADMET (Absorption, Distribution, Metabolism, Excretion, and Toxicity) analyses to screen phytochemicals generated from Phyllanthus niruri as potential inhibitors of nephrolithiasis associated proteins. 64 phytochemicals were retrieved from literature and was used to perform docking against the 7KLL protein target using AutoDock and AutoDock Vina integrated in PyRx. Binding affinities, inhibition constants as well as protein-ligands interactions were analyzed using Biovia Discovery Studio and PyMOL. ADMET predictions were performed using online softweb Admetsar2 to assess pharmacokinetic and safety profiles. Amariin (−8.8 kcal/mol), Ellagitannin (8.5 kcal/mol), Miquelianin (-8.6 kcal/mol) Nirurin (-8.5 kcal/mol), Quercetin 3-0-beta-D-glucuronopyranoside (-8.6 kcal/mol) demonstrated strong binding affinities comparable to or higher than standard drugs allopurinol (−5.9 kcal/mol), levofloxacin (−.6.7 kcal/mol), and nifedipine (−5. kcal/mol). used for comparison. The ADMET evaluation shown that the top ligands possess favorable drug-likeness, oral bioavailability, and non-toxicity. The results suggest that Phyllanthus niruri phytochemicals possess promising inhibitory potential against nephrolithiasis targets and may serve as leads for the development of safe, plant-based therapeutics.
    VL  - 12
    IS  - 1
    ER  - 

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  • Abstract
  • Keywords
  • Document Sections

    1. 1. Introduction
    2. 2. Materials and Methods
    3. 3. Results
    4. 4. Discussion
    5. 5. Conclusions
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  • Abbreviations
  • Author Contributions
  • Conflicts of Interest
  • References
  • Cite This Article
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