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. 2021 Jan 8;27:e20200073. doi: 10.1590/1678-9199-JVATITD-2020-0073

Table 6. Physicochemical properties of dehydrobufotenin, marinobufotoxin, marinobufagin, bufalin and the antimalarial chloroquine according to SwissADME web tool.

PHYSICOCHEMICAL PROPERTIES Dehydrobufotenine Marinobufotoxin Marinobufagin Bufalin Chloroquine
Formula C12H15N2O C38H56N4O9 C24H32O5 C24H34O4 C18H26ClN3
Molecular weight 203.26 g/mol 712.87 g/mol 400.51 g/mol 386.52 g/mol 319.87 g/mol
Num. heavy atoms 15 51 29 28 22
Num. arom heavy atoms 9 6 6 6 10
Fractions Csp3 0.33 0.76 0.79 0.79 0.50
Num. rotable bonds 0 18 1 1 8
Num. H-bond acceptors 2 10 5 4 2
Num. H-bond donors 2 6 2 2 1
Molar Refractivity 66.18 190.16 108.86 109.86 97.41
TPSA 36.02 Ų 217.57 Ų 83.20 Ų 70.67 Ų 28.16 Ų
LIPOPHILICITY
Log P olw (ILOGP) -1.27 3.47 3.27 3.34 3.95
Log P olw (XLOGP3) 1.64 3.23 2.50 3.2 4.63
Log P olw (WLOGP) 1.62 4.10 3.37 4.24 4.62
Log P olw (MLOGP) -2.19 2.12 2.75 3.58 3.20
Log P olw (SILICOS-IT) 2.15 4.89 3.82 3.99 4.32
Consensus Log P olw 0.39 3.56 3.14 3.67 4.15
WATER SOLUBILITY
Log S (ESOL) -2.58 -5.19 -3.99 -4.35 -4.55
Solubility 5.38e-01 mg/mL; 2.65e-03 mol/L 4.56e-03 mg/mL; 6.40e-06 mol/L 4.14e-02 mg/mL; 1.03e-04 mol/L 1.75e-02 mg/mL; 4.52e-05 mol/L 9.05e-03 mg/mL; 2.83e-05 mol/L
Class Soluble Moderately soluble Soluble Moderately soluble Moderately soluble
Log S (Ali) -2.01 -7.47 -3.89 -4.36 -4.95
Solubility 1.99e+00 mg/mL; 9.78e-03 mol/L 2.40e-05 mg/mL; 3.37e-08 mol/L 5.13e-02 mg/mL; 1.28e-04 mol/L 1.70e-02 mg/mL; 4.41e-05 mol/L 3.61e-03 mg/mL; 1.13e-05 mol/L
Class Soluble Poorly soluble Soluble Moderately soluble Moderately soluble
Log S (SILICOS-IT) -4.09 -7.46 -4.73 -5.2 -6.92
Solubility 1.63e-02 mg/mL; 8.04e-05 mol/L 2.45e-05 mg/mL; 3.44e-08 mol/L 7.42e-03 mg/mL; 1.85e-05 mol/L 3.68e-03 mg/mL; 9.53e-06 mol/L 3.86e-05 mg/mL; 1.21e-07 mol/L
Class Moderately soluble Poorly soluble Moderately soluble Moderately soluble Poorly soluble
PHARMACOKINETICS
GI absorption High Low High High High
BBB permeant Yes No No Yes Yes
P-gp substrate Yes Yes Yes Yes No
CYP1A2 inhibitor Yes No No No Yes
CYP2C19 inhibitor No No No No No
CYP2C9 inhibitor No No No No No
CYP2D6 inhibitor No No Yes No Yes
CYP3A4 inhibitor No Yes No No Yes
Log Kp (skin permeation) -6.38 cm/s -8.36 cm/s -6.97 cm/s -6.39 cm/s -4.96 cm/s
DRUGLIKENESS
Lipinski Yes; 0 violation No; 3 violations: MW>500, NorO>10, NHorOH>5 Yes; 0 violation Yes; 0 violation Yes; 0 violation
Ghose Yes No; 3 violations: MW>500, NorO>10, NHorOH>5 Yes Yes Yes
Veber Yes No; 2 violations: Rotors>10, TPSA>140 Yes Yes Yes
Egan Yes No; 1 violation: TPSA>131.6 Yes Yes Yes
Muegge Yes No; 4 violations: MW>600, TPSA>150, Rotors>15, H-don>5 Yes Yes Yes
Biovailability Score 0.55 0.17 0.55 0.55 0.55
MEDICINAL CHEMISTRY
PAINS 0 alert 0 alert 0 alert 0 alert 0 alert
Brenk 1 alert quaternary_nitrogen_2 3 alerts: Three-membered_heterocycle, imine_1, imine_2 1 alert: Three-membered_heterocycle 0 alert 0 alert
Leandlikeness No; 1 violation: MW<250 No; 2 violations: MW>350, Rotors>7 No; 1 violation: MW>350 No; 1 violation: MW>350 No; 2 violations: Rotors>7, XLOGP3>3.5
Synthetic accessibility 2.14 7.71 6.07 5.56 2.76