Microbial Conversion of 18β-Glycyrrhetinic Acid and 22a-Hydroxy-18β-glycyrrhetinic Acid by Chainia antibiotica
1986 年 50 巻 5 号 p. 1239-1245
詳細
1986 年 50 巻 5 号 p. 1239-1245
18β-Glycyrrhetinic acid (3β-hydroxy-11-oxo-18β-olean-12-en-30-oic acid) was converted into two 3, 4-seco-oleanane-type compounds, 4-hydroxy-3, 4-seco-11-oxo-18β-olean-12-ene-3, 30-dioic acid and 4, 7β-dihydroxy-3, 4-seco-11-oxo-18β-olean-12-ene-3, 30-dioic acid, by Chainia antibiotica, and 22α-hydroxy-18β-glycyrrhetinic acid (3β, 22α-dihydroxy-11-oxo-18β-olean-12-en-30-oic acid) was converted into 4, 22α-dihydroxy-3, 4-seco-11-oxo-18β-olean-12-ene-3, 30-dioic acid. The structures of these conversion products were determined by a combination of chemical and spectroscopic methods.
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