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The non-alkaloid chemical constituents of dried Phellodendron chinense barks were investigated. A total of 14 phenolic compounds (1-14) were isolated from the 95% ethanol extract of Phellodendron chinense by the utilization of silica gel, medium pressure liquid chromatography, Sephadex LH-20 column chromatography, and preparative liquid chromatography. Among of the isolated compounds, isophellolactone (1) was identified as a new compound. The isolated 14 compounds were further tested the activity on α-glucosidase inhibition. The results for the first time demonstrated that quininic acid ester 3-6 and 8 exhibited good α-glucosidase inhibitory activity. Polyhydroxy hexa-membered carbon ring in quinine ester derivatives is possibly the essential group for the α-glucosidase inhibitory activity.
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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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