Twenty compounds were isolated and purified from the fresh roots of Huaizhong NO.1 Rehmannia glutinosa by various chromatographic techniques such as Toyopreal HW-40C, Sephadex LH-20, silica gel and semi-preparative HPLC. Their structures were identified by analysis of physicochemical properties and spectral data, and determined as 3-methyl-2-(hydroxymethyl)-4H-pyrone-4-one (1), 3-amino-2-pyridine ethanol (2), (5'S)-2-oxo-N-phenylpyrrolidine-3-carboxamide (3), L-pyroglutamic acid methyl ester (4), indazole (5), uridine (6), adenosine (7), rehmanalkaloid C (8), 1-(3-ethylphenyl)-1, 2-ethanediol (9), (3-ethylphenyl)-1, 2-ethanediol (10), 2-hydroxymethylphenyl-1-O-β-D-glucopyranoside (11), mussaenoside (12), 11-methylforsythide (13), 7-deoxygardoside (14), 1-O-α-L-rhamnopyranosyl(1→6)-β-D-glucopyranoside (15), 6-deoxy-D-mannono-1, 4-lactone (16), monoethylfumarate (17), daphneresinol (18), dihydroquercetin (19), rhamnopyranosyl vaniloyl (20). Compound 1 is a new compound, named as 3-methyl-2-(hydroxymethyl)-4H-pyrone-4-one, compounds 2 and 3 are new natural products, and compounds 4, 5, 9-11, 13, 14 and 16-19 are isolated from Rehmannia for the first time.
| 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 |