Biological-Active Triterpenes of Alismatis Rhizoma. IV. The Structures of Alisol B, Alisol B Monoacetate and Alisol C Monoacetate-Some Reactions of the α-Hydroxy Epoxide of the Alisol B Derivatives
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概要
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Studies on the structures of alisol B, alisol B monoacetate and alisol C monoacetate, the new biological-active triterpenes of Alismatis Rhizoma, are reported. The former two compounds have been correlated to alisol A (1) establishing their structures as shown 2 and 4,respectively. The structure of alisol C monoacetate has been clarified to be 16-oxoalisol B 23-monoacetate (21) on the basis of correlation of the compound with 4. Stereochemical courses and mechanisms of some epoxide cleavage reactions of 2,4 and alisol B diacetate (8) are also described.
- 1970-07-25
著者
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篠原 正和
Central Research Divison Takeda Chemical Industries Ltd.
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村田 忠一
Research and Development Division, Takeda Chemical Industries, Ltd.
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篠原 正和
Research and Development Division, Takeda Chemical Industries, Ltd.
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宮本 益雄
Research and Development Division, Takeda Chemical Industries, Ltd.
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宮本 益雄
Central Research Divison Takeda Chemical Industries, Ltd.
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村田 忠一
Central Research Division Takeda Chemical Industries Ltd.
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宮本 益雄
Central Research Divison Takeda Chemical Industries Ltd.
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宮本 益雄
Research And Development Division Takeda Chemical Industries Ltd.
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