期刊
CHEMICAL & PHARMACEUTICAL BULLETIN
卷 51, 期 4, 页码 412-414出版社
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.51.412
关键词
Onosma hispida; Boraginaceae; flavanone; cholinesterase inhibitor
Hispidone, a new flavanone, has been isolated from Onosma hispida and assigned the structure (2S)-5,2'-di-hydroxy-7,4',5'-trimethoxyflavanone (1) by spectroscopic methods. In addition, (2S)-5,2'-dihydroxy-7,5'-dimethoxyflavanone (2), benzoic acid (3), and 4-hydroxy benzoic acid (4) are also reported for the first time from this species.
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