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This study was designed to investigate the chemical constituents of the anti-osteoporotic part of Lepidium meyenii Walp. (maca) produced in Heqing, Yunnan. Seven compounds were isolated from the n-BuOH extract of maca using combination of column chromatographies on MCI resin, silica gel, C18 bonded silica gel, and Sephadex LH-20, followed by semi-preparative HPLC and recrystallization. The purified compounds were identified on the basis of their physicochemical properties and spectral data as macaolidine (1), tryptophan (2), daucosterol (3), (3S)-1, 2, 3, 4-tetrahydro-β-carboline-3-carboxylicacid (4), chlorogenic acid (5), luteolin (6), and hyperoside (7). Compound 1 is a new phenylacetamide alkaloid, and compounds 4-7 were isolated from Lepidium meyenii for the first time.
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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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