Transformation of D:A-Friedo-18β-lup-19-en-3-one into D:B-Friedo-18β,19αH-lup-5-en-3β-ol and a Comment on the Structure of Guimarenol

DOI: 10.1246/bcsj.53.2971

Source and publish data:

Bulletin of the Chemical Society of Japan p. 2971 - 2976 (1980)

Update date:2022-08-03

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Authors:

Yokoyama, Yasushi

Moriyama, Yoshihiko

Tsuyuki, Takahiko

Takahashi, Takeyoshi

Itai, Akiko

Iitaka, Yoichi

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Article abstract of DOI:10.1246/bcsj.53.2971

D:A-Friedo-18β-lup-19-en-3-one was transformed into D:B-friedo-18β,19αH-lup-5-en-3β-ol by two routes, 1) bromination-dehydrobromination of an enol benzoate of D:A-friedo-18β,19αH-lupan-3-one and 2) BF3*Et2O-catalyzed backbone rearrangement of 3β,4β-epoxy-

Full text of DOI:10.1246/bcsj.53.2971

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