[Study on flavonoid chemical constituents contained in Memorialis hirta].
OBJECTIVE
To study the chemical constituents of Memorialis hirta.


METHODS
Compounds were isolated and purified by multiple methods, and their structures were identified based on physicochemical property and spectrum data.


RESULTS
12 compounds were isolated from ethyl acetate from 95% ethanol extracts of M. hirta, they were isorhamnetin (1), kaempferol (2), quercetin (3), isorhamnetin-3-O-alpha-L-rhamnopyranoside (4), kaempferol-3-O-alpha-L-rhamnopyranoside (5), isorhamnetin-3-O-beta-D-glucopyranoside (6), kaempferol-3-O-beta-D-glucopyranoside (7), quercetin-3-O-alpha-L-rhamnopyranoside (8), quercetin-3-O-beta-D-glucopyranoside (9), isorhamnetin-3-O-rutinoside (10), kaempferol-3-O-rutinoside (11) and quercetin-3-O-rutinoside (12), respectively.


CONCLUSIONS
All compounds were obtained from the genus Memorialis for the first time.
School of Pharmacy, Sichuan University, Chengdu 610041, China.
Jun
J
Lei
Yunchuan
Y
Xiao
Wenjing
W
Wang
Zhen
Z
Xi
Miao
M
Liu
Jian
J
Ran
Jing
J
Huang
D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005419:Flavonoids / Q000032:analysis* / Q000302:isolation & purification; D027003:Urticaceae / Q000737:chemistry*
D004365:Drugs, Chinese Herbal; D005419:Flavonoids