Chem. J. Chinese Universities ›› 2017, Vol. 38 ›› Issue (1): 41.doi: 10.7503/cjcu20160643
• Organic Chemistry • Previous Articles Next Articles
LIU Benguo1, LIU Jiangwei1, LI Jiaqi2, GENG Sheng1, MO Haizhen1, LIANG Guizhao2,*()
Received:
2016-09-14
Online:
2017-01-10
Published:
2016-12-20
Contact:
LIANG Guizhao
E-mail:gzliang@cqu.edu.cn
Supported by:
CLC Number:
TrendMD:
LIU Benguo, LIU Jiangwei, LI Jiaqi, GENG Sheng, MO Haizhen, LIANG Guizhao. 3D-QSAR and Interaction Mechanism of Flavonoids s P-glycoprotein Inhibitors†[J]. Chem. J. Chinese Universities, 2017, 38(1): 41.
Compd. | Type | 3 | 4 | 5 | 6 | 7 | 8 | 2' | 3' | 4' | 5' | 6' | KD/ (μmol·L-1) | Group |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Ⅰ | —H | —H | —H | —OH | —H | —H | —H | —H | —H | —H | 34.900 | Training | |
2 | Ⅰ | —H | —OH | —H | —OH | —H | —H | —H | —OH | —H | —H | 10.100 | Training | |
3 | Ⅰ | —OH | —H | —H | —H | —H | —H | —H | —H | —H | —H | 10.100 | Training | |
4 | Ⅰ | —H | —OH | —H | —OH | —H | —H | —H | —H | —H | —H | 8.900 | Test | |
5 | Ⅰ | —CH3 | —OH | —H | —OH | —H | —H | —H | —H | —H | —H | 8.900 | Training | |
6 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —OH | —OH | —H | —H | 7.000 | Training | |
7 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —F | —H | —H | 6.800 | Training | |
8 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —OH | —H | —H | 6.700 | Test | |
9 | Ⅰ | —H | —OH | —H | —OH | —H | —H | —F | —F | —H | —H | 6.300 | Training | |
10 | Ⅰ | —H | —OH | —H | —OCH3 | —H | —H | —H | —H | —H | —H | 6.300 | Training | |
11 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —H | —H | —H | 5.300 | Training | |
12 | Ⅱ | —H | —OH | —H | —H | —OH | —H | —OH | —H | —OH | 4.800 | Test | ||
13 | Ⅱ | —H | —H | —H | —H | —OH | —H | —OH | —H | —OH | 4.600 | Training | ||
14 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —OCH3 | —H | —H | 4.500 | Training | |
15 | Ⅰ | —OH | —OH | —H | —OH | —H | —Cl | —H | —Cl | —H | —H | 4.000 | Training | |
16 | Ⅱ | —H | —F | —H | —H | —OH | —H | —OH | —H | —OH | 3.600 | Test | ||
17 | Ⅰ | —H | —OH | —CH3 | —OH | —H | —H | —H | —H | —H | —H | 3.100 | Training | |
18 | Ⅱ | —H | —OCH3 | —H | —H | —OH | —H | —OH | —H | —OH | 2.300 | Training | ||
19 | Ⅰ | —H | —OH | —H | —OH | —H | —H | —H | —I | —H | —H | 2.200 | Training | |
20 | Ⅰ | —H | —OH | —CH3 | —CH3 | —H | —H | —H | —H | —H | —H | 1.300 | Test | |
21 | Ⅱ | —H | —Cl | —H | —H | —OH | —H | —OH | —H | —OH | 1.300 | Training | ||
22 | Ⅰ | —H | —OH | —H | Isopropyl | —H | —H | —H | —H | —H | —H | 1.300 | Training | |
23 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —I | —H | —H | 1.100 | Training | |
24 | Ⅰ | —H | —OH | —H | —OH | Benzyl | —H | —H | —H | —H | —H | 0.990 | Test | |
25 | Ⅰ | —H | —OH | —H | —OH | Dimethylallyl | —H | —H | —OH | —H | —H | 0.700 | Training | |
26 | Ⅱ | —H | —Br | —H | —H | —OH | —H | —OH | —H | —OH | 0.570 | Training | ||
27 | Ⅰ | —OH | —OH | —H | —OH | Dimethylallyl | —H | —H | —H | —H | —H | 0.450 | Training | |
28 | Ⅰ | —H | —OH | Benzyl | —OH | —H | —H | —H | —H | —H | —H | 0.340 | Test | |
29 | Ⅰ | —H | —OH | Prenyl | —OH | —H | —H | —H | —H | —H | —H | 0.300 | Training | |
30 | Ⅰ | —H | —OH | —H | —OH | Prenyl | —H | —H | —H | —H | —H | 0.280 | Training | |
31 | Ⅱ | —H | —I | —H | —H | —OH | —H | —OH | —H | —OH | 0.250 | Training | ||
32 | Ⅰ | —OH | —OH | —H | —OH | Prenyl | —H | —H | —H | —H | —H | 0.220 | Test | |
33 | Ⅰ | —OH | —OH | Prenyl | —OH | —H | —H | —H | —H | —H | —H | 0.210 | Training | |
34 | Ⅰ | —OH | —OH | —H | —OH | Dimethylallyl | —H | —H | —OCH3 | —H | —H | 0.200 | Training | |
35 | Ⅰ | —H | —OH | —H | —OH | Dimethylallyl | —H | —H | —H | —H | —H | 0.200 | Training | |
36 | Ⅰ | —CH3 | —OH | —H | —CH3 | Dimethylallyl | —H | —H | —H | —H | —H | 0.150 | Test | |
37 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | n-C8H17 | —H | —H | 0.060 | Training | |
38 | Ⅰ | —H | —OH | Geranyl | —OH | —H | —H | —H | —H | —H | —H | 0.045 | Training | |
39 | Ⅰ | —H | —OH | —H | —OH | Geranyl | —H | —H | —H | —H | —H | 0.025 | Training |
Table 1 Bioactivity data of 3a flavonoids
Compd. | Type | 3 | 4 | 5 | 6 | 7 | 8 | 2' | 3' | 4' | 5' | 6' | KD/ (μmol·L-1) | Group |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Ⅰ | —H | —H | —H | —OH | —H | —H | —H | —H | —H | —H | 34.900 | Training | |
2 | Ⅰ | —H | —OH | —H | —OH | —H | —H | —H | —OH | —H | —H | 10.100 | Training | |
3 | Ⅰ | —OH | —H | —H | —H | —H | —H | —H | —H | —H | —H | 10.100 | Training | |
4 | Ⅰ | —H | —OH | —H | —OH | —H | —H | —H | —H | —H | —H | 8.900 | Test | |
5 | Ⅰ | —CH3 | —OH | —H | —OH | —H | —H | —H | —H | —H | —H | 8.900 | Training | |
6 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —OH | —OH | —H | —H | 7.000 | Training | |
7 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —F | —H | —H | 6.800 | Training | |
8 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —OH | —H | —H | 6.700 | Test | |
9 | Ⅰ | —H | —OH | —H | —OH | —H | —H | —F | —F | —H | —H | 6.300 | Training | |
10 | Ⅰ | —H | —OH | —H | —OCH3 | —H | —H | —H | —H | —H | —H | 6.300 | Training | |
11 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —H | —H | —H | 5.300 | Training | |
12 | Ⅱ | —H | —OH | —H | —H | —OH | —H | —OH | —H | —OH | 4.800 | Test | ||
13 | Ⅱ | —H | —H | —H | —H | —OH | —H | —OH | —H | —OH | 4.600 | Training | ||
14 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —OCH3 | —H | —H | 4.500 | Training | |
15 | Ⅰ | —OH | —OH | —H | —OH | —H | —Cl | —H | —Cl | —H | —H | 4.000 | Training | |
16 | Ⅱ | —H | —F | —H | —H | —OH | —H | —OH | —H | —OH | 3.600 | Test | ||
17 | Ⅰ | —H | —OH | —CH3 | —OH | —H | —H | —H | —H | —H | —H | 3.100 | Training | |
18 | Ⅱ | —H | —OCH3 | —H | —H | —OH | —H | —OH | —H | —OH | 2.300 | Training | ||
19 | Ⅰ | —H | —OH | —H | —OH | —H | —H | —H | —I | —H | —H | 2.200 | Training | |
20 | Ⅰ | —H | —OH | —CH3 | —CH3 | —H | —H | —H | —H | —H | —H | 1.300 | Test | |
21 | Ⅱ | —H | —Cl | —H | —H | —OH | —H | —OH | —H | —OH | 1.300 | Training | ||
22 | Ⅰ | —H | —OH | —H | Isopropyl | —H | —H | —H | —H | —H | —H | 1.300 | Training | |
23 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | —I | —H | —H | 1.100 | Training | |
24 | Ⅰ | —H | —OH | —H | —OH | Benzyl | —H | —H | —H | —H | —H | 0.990 | Test | |
25 | Ⅰ | —H | —OH | —H | —OH | Dimethylallyl | —H | —H | —OH | —H | —H | 0.700 | Training | |
26 | Ⅱ | —H | —Br | —H | —H | —OH | —H | —OH | —H | —OH | 0.570 | Training | ||
27 | Ⅰ | —OH | —OH | —H | —OH | Dimethylallyl | —H | —H | —H | —H | —H | 0.450 | Training | |
28 | Ⅰ | —H | —OH | Benzyl | —OH | —H | —H | —H | —H | —H | —H | 0.340 | Test | |
29 | Ⅰ | —H | —OH | Prenyl | —OH | —H | —H | —H | —H | —H | —H | 0.300 | Training | |
30 | Ⅰ | —H | —OH | —H | —OH | Prenyl | —H | —H | —H | —H | —H | 0.280 | Training | |
31 | Ⅱ | —H | —I | —H | —H | —OH | —H | —OH | —H | —OH | 0.250 | Training | ||
32 | Ⅰ | —OH | —OH | —H | —OH | Prenyl | —H | —H | —H | —H | —H | 0.220 | Test | |
33 | Ⅰ | —OH | —OH | Prenyl | —OH | —H | —H | —H | —H | —H | —H | 0.210 | Training | |
34 | Ⅰ | —OH | —OH | —H | —OH | Dimethylallyl | —H | —H | —OCH3 | —H | —H | 0.200 | Training | |
35 | Ⅰ | —H | —OH | —H | —OH | Dimethylallyl | —H | —H | —H | —H | —H | 0.200 | Training | |
36 | Ⅰ | —CH3 | —OH | —H | —CH3 | Dimethylallyl | —H | —H | —H | —H | —H | 0.150 | Test | |
37 | Ⅰ | —OH | —OH | —H | —OH | —H | —H | —H | n-C8H17 | —H | —H | 0.060 | Training | |
38 | Ⅰ | —H | —OH | Geranyl | —OH | —H | —H | —H | —H | —H | —H | 0.045 | Training | |
39 | Ⅰ | —H | —OH | —H | —OH | Geranyl | —H | —H | —H | —H | —H | 0.025 | Training |
No. | Modeling method | Training set size | Test set size | r2 | q2 | |
---|---|---|---|---|---|---|
1 | 2D-QSAR[ | 46 | 0 | 0.912 | 0.800 | |
2 | 2D-QSAR[ | 43 | 14 | 0.826 | 0.721 | 0.679 |
3 | Ligand based CoMFA[ | 32 | 9 | 0.747 | 0.639 | 0.802 |
4 | Ligand based CoMSIA[ | 32 | 9 | 0.810 | 0.676 | 0.785 |
5 | Receptor guided CoMFA[ | 32 | 9 | 0.712 | 0.497 | 0.841 |
6 | Receptor guided CoMSIA[ | 32 | 9 | 0.805 | 0.589 | 0.937 |
7 | Topomer CoMFA | 30 | 9 | 0.971 | 0.728 | 0.816 |
Table 2 Comparison of QSAR modeling of flavonoids as P-glycoprotein inhibitors
No. | Modeling method | Training set size | Test set size | r2 | q2 | |
---|---|---|---|---|---|---|
1 | 2D-QSAR[ | 46 | 0 | 0.912 | 0.800 | |
2 | 2D-QSAR[ | 43 | 14 | 0.826 | 0.721 | 0.679 |
3 | Ligand based CoMFA[ | 32 | 9 | 0.747 | 0.639 | 0.802 |
4 | Ligand based CoMSIA[ | 32 | 9 | 0.810 | 0.676 | 0.785 |
5 | Receptor guided CoMFA[ | 32 | 9 | 0.712 | 0.497 | 0.841 |
6 | Receptor guided CoMSIA[ | 32 | 9 | 0.805 | 0.589 | 0.937 |
7 | Topomer CoMFA | 30 | 9 | 0.971 | 0.728 | 0.816 |
Fig.3 3D contour plots of the Topomer CoMFA modelThe reference molecule used was sample 4(Chrysin). (A) Steric field map of R1-group; (B) electrostatic field map of R1-group;(C) steric field map of R2-group; (D) electrostatic field map of R2-group.
Molecules | Compd. | Total score | ClogP | H-donor | H-acceptor | Mw |
---|---|---|---|---|---|---|
Chrysin | 4 | 2.69 | 3.56 | 2 | 4 | 254.24 |
6-Prenyl-chrysin | 29 | 3.87 | 5.46 | 2 | 4 | 322.36 |
8-Prenyl-chrysin | 30 | 4.06 | 5.51 | 2 | 4 | 322.36 |
6-Geranyl-chrysin | 38 | 6.66 | 7.49 | 2 | 4 | 390.48 |
8-Geranyl-chrysin | 39 | 7.47 | 7.54 | 2 | 4 | 390.48 |
Table 3 Total score and ClogP values of chrysin and its prenylated derivatives
Molecules | Compd. | Total score | ClogP | H-donor | H-acceptor | Mw |
---|---|---|---|---|---|---|
Chrysin | 4 | 2.69 | 3.56 | 2 | 4 | 254.24 |
6-Prenyl-chrysin | 29 | 3.87 | 5.46 | 2 | 4 | 322.36 |
8-Prenyl-chrysin | 30 | 4.06 | 5.51 | 2 | 4 | 322.36 |
6-Geranyl-chrysin | 38 | 6.66 | 7.49 | 2 | 4 | 390.48 |
8-Geranyl-chrysin | 39 | 7.47 | 7.54 | 2 | 4 | 390.48 |
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