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. 2020 Dec 8:1–21. doi: 10.1080/07391102.2020.1852117

Table 6.

PASS analysis of major active components of N. sativa versus standard antiviral drugs hydroxychloroquine and ivermectin.

Lipinski’s rule of 5 (Physicochemical Properties)
S.No. Phytoconstituents % Absorptiona
(>50%)
Topological Polar Surface Area (Å)2
(TPSA)b
(<160 Å)
MW (<500) c logPc (<5) Heavy atom count
(n atoms)
Hydrogen
Bond Donors
(nOHNH) (≤5)
Hydrogen Bond Acceptors (nON)
(≤10)
Number of
Rotatable bonds
(≤10)
Lipinski’s
violation
1. 24-methylene-
Cycloartanol
102.02 20.23 440.76 8.03 32 1 1 5 1
2. Alpha-spinasterol 102.02 20.23 412.70 7.87 30 1 1 5 1
3. Beta-amyrin 102.02 20.23 426.73 8.02 31 1 1 0 1
4. Beta-sitosterol 102.02 20.23 414.72 8.62 30 1 1 6 1
5. Campesterol 102.02 20.23 400.69 8.30 29 1 1 5 1
6. Citrostadienol 102.02 20.23 426.73 8.15 31 1 1 5 1
7. Cycloartenol 102.02 20.23 426.73 8.21 31 1 1 4 1
8. Cycloeucalenol 102.02 20.23 426.73 7.62 31 1 1 5 1
9. Taraxerol 102.02 20.23 426.73 8.02 31 1 1 0 1
10. Tirucallol 102.02 20.23 426.73 8.48 31 1 1 4 1
11. Hydroxychloroquine 92.16 48.38 335.88 4.00 23 2 4 9 0
12. Ivermectin 50.31 170.09 875.11 4.58 62 3 14 8 3

Note:.

aPercentage Absorption was calculated as: % Absorption =109- [0.345xTopological Polar Surface Area].

bTopological polar surface area (defined as a sum of surfaces of polar atoms in a molecule).

cLogarithm of compound partition coefficient between n-octanol and water.