The 95% ethanol extract of Curcuma longa was isolated and purified by silica gel column chromatography, polyamide column chromatography, preparative thin layer chromatography and semi-preparative HPLC. Then, the structures of the obtained compounds were identified by HR-MS, IR, and NMR. Absolute configuration of the new compound was determined by calculating ECD. Finally, two bisabolane-type sesquiterpenoids were obtained from C. longa and identified as (7S)-1,3,5,10-bisabolatetraen-3-nitro-9-one (1) and turmeronol A (2). Compound 1 was a novel nitro-substituted bisabolane-type sesquiterpenoid.
| 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 |