[Chemical constituents from Elsholtzia blanda].
OBJECTIVE
To investigate the constituents of Elsholtzia blanda.


METHODS
The chemical components were isolated by polyamide and silica gel column chromatography. Their structures were identified with extensive spectral (EI-MS, ESI-MS, 1H-NMR, 13C-NMR, DEPT, 1H-1H-COSY, HMBC, HMQC) and chemical methods.


RESULTS
Five compounds were isolated and identified as luteolin (I), luteolin-5-O-beta-D-glucopyranoside (II), luteolin-7-O-beta-D-glucopyranoside (III), 5-hydroxy-7, 8 -dimethoxyflavone (IV) and 5-hydroxy-6, 7-dimethoxyflavone (V).


CONCLUSIONS
Compounds III, IV, V were isolated from E. blanda for the first time and I was firstly separated from the genus Elsholtzia.
Chen
Hai-yong
HY
College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310031, China.
Zhou
Chang-xin
CX
Lou
Yi-jia
YJ
Duan
Zhi-hong
ZH
Zhao
Yu
Y
D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D019686:Lamiaceae / Q000737:chemistry*; D047311:Luteolin / Q000737:chemistry / Q000302:isolation & purification*; D035261:Plant Components, Aerial / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*
D005419:Flavonoids; D005960:Glucosides; C035064:5-hydroxy-7,8-dimethoxyflavone; C066408:luteolin-7-glucoside; D047311:Luteolin