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New flavonoid glycosides from Elsholtzia rugulosa Hemsl
Gaimei She1, Zhiqin Guo, Haining Lv
1School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China. shegaimei@126.com
Molecules (Basel, Switzerland)
|November 20, 2009
Abstract:
Elsholtzia rugulosa Hemsl. is known in China as a local herbal tea, medicinal herb and honey plant. Chemical examination of E. rugulosa led to the isolation of two new flavonoid glycosides, apigenin 4'-O-alpha-D-glucopyranoside (1) and 5,7,3',4'-tetrahydroxy-5'-C-prenylflavone-7-O-beta-D-glucopyranoside (2), together with nine known flavonoids. Their structures were elucidated on the basis of spectroscopic evidence.
