Marine Terpenes and Terpenoids. XIV. Absolute Configuration and Acid-Catalyzed Transformation of (-)-12,13-Didehydrofurospongin-1 Isolated from an Arabian Sea Sponge, Fasciospongia cavernosa SCHMIDT

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概要

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• Three furanoterpenes, one having a furanocyclohexane ring (1) and two methyl ethers (2 and 3), and 12,13-didehydrofurospongin-1 (4a) were isolated from the lipid extract of the sponge, Fasciospongia cavernosa SCHMIDT. The absolute configuration of 4a at C-11 was shown to be (S), opposite to that reported for furospongin-1 (5). Compound 4a was found to be quite labile in acidic media and was converted, at room temperature, to 1 (HClO_4 in dioxane) or to a mixture of 1,2 and 3 (HClO_4 in MeOH). These results suggest that 1,2 and 3 are at least partly artefacts formed from 4a during the isolation process.

• 公益社団法人日本薬学会の論文
• 1992-03-25

著者

• 小林 優

  Faculty Of Pharmaceutical Sciencces Hokkaido University

• 小林 優

  北大薬

• 村田 理

  Faculty Of Pharmaceutical Sciences Hokkaido University

• CHAVAKULA Ramadas

  School of Chemistry, Andhra University

• SARMA Nittala

  School of Chemistry, Andhra University

• Sarma Nittala

  School Of Chemistry Andhra University

• Chavakula Ramadas

  School Of Chemistry Andhra University

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