Metabolism of paeoniflorin and related compounds by human intestinal bacteria. II. Structures of 7S- and 7R-paeonimetabolines I and II formed by Bacteroides fragilis and Lactobacillus brevis.
作者:YUE-ZHONG SHU、MASAO HATTORI、TERUAKI AKAO、KYOICHI KOBASHI、KATSUMI KAGEI、KEIICHI FUKUYAMA、TOMITAKE TSUKIHARA、TSUNEO NAMBA
DOI:10.1248/cpb.35.3726
日期:——
Paeoniflorin from peony roots was incubated with a cell suspension of Bacteroides fragilis or Lactobacillus brevis isolated from human intestinal flora. Paeoniflorin was converted into the 7S and 7R isomers of paeonimetaboline I as major metabolites, along with the 7R and 7S isomers of paeonimetaboline II as minor metabolites in the case of the former strain. The structures were elucidated by various spectroscopic methods, and the structure of 7R-paeonimetaboline I was confirmed by X-ray analysis.
将牡丹根中的芍药苷与从人体肠道菌群中分离出来的脆弱拟杆菌或布氏杆菌的细胞悬浮液进行培养。芍药苷被转化为芍药甲萘醌 I 的 7S 和 7R 异构体作为主要代谢物,而芍药甲萘醌 II 的 7R 和 7S 异构体则作为次要代谢物。通过各种光谱方法对其结构进行了阐明,并通过 X 射线分析确认了 7R-芍酰基美他泊林 I 的结构。