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Ten novel oleanolic acid (OA) derivatives containing urea or thiourea group were designed and synthesized, the chemical structures were confirmed by 1H NMR, 13C NMR and HR-MS. All of these compounds were evaluated for the inhibitory activity against growth of HepG2 and SGC7901 cells. The results showed that compounds I3 and Ⅱ3 exhibited significant antitumor activities with IC50 of 9.4 and 5.5 μmol·L-1, respectively. Molecular docking studies showed that all these compounds exhibit inhibitory ability against mTOR kinase. Compounds I3 and Ⅱ3 were further evaluated for the inhibitory activity against mTOR kinase. The results showed that I3 and Ⅱ3 exhibited strong inhibitory effect on mTOR kinase with IC50 values of 0.83 and 0.26 μmol·L-1.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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