Metabolism of paeoniflorin and related compounds by human intestinal bacteria. IV. Formation and structures of adducts of a metabolic intermediate with sulfhydryl compounds by Lactobacillus brevis.
Paeoniflorin from peony roots was converted to new compounds in the presence of various sulfhydryl compounds by Lactobacillus brevis. The compounds formed in the presence of 3-mercaptopropionic acid, 2-mercaptoethanol and thiobenzoic acid were determined to be 7R and 7S mixture of 8-(2-carboxyethylthio)paeonimetabolin I, 8-(2-hydroxyethylthio)paeonimetabolin I and 8-benzoylthiopaeonimetabolin I, respectively, by various spectroscopic methods. These compounds are adducts of a metabolic intermediate of paeoniflorin with the sulfhydryl compounds.
在多种巯基化合物的作用下,牡丹根中的芍药苷被乳酸杆菌转化为新的化合物。在 3-巯基丙酸、2-巯基乙醇和硫代苯甲酸存在下生成的化合物,通过各种光谱方法分别测定为 8-(2-羧基乙硫基)芍药苷 I、8-(2-羟基乙硫基)芍药苷 I 和 8-苯甲酰基硫代芍药苷 I 的 7R 和 7S 混合物。这些化合物是芍药苷的代谢中间体与巯基化合物的加合物。