40 ガガイモ科植物成分の研究 : キジョランの成分研究及びその生合成

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概要

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• The structures of twelve ester-type polyoxypregnane derivatives, isolated from Marsdenia tomentosa DECNE (Asclepiadaceae), were determined with some interesting information for their properties on the bases of chemical and physico-chemical evidences. The configuration at C-20 of tomentogenin (I) and utendin (II) was determined as S by means of the circular dichroism (CD) experiment of 20-O-O-nitrobenzoyl-derivatives to define their absolute configurations. A hypothetical biogenetic pathway of polyoxypregnanes in M. tomentosa is proposed on the bases of the position of ester linkages and the nature of oxygen functions of ester-type derivatives.

• 天然有機化合物討論会の論文
• 1976-09-20

著者

• 三橋 博

  Research Institute For Biology & Chemistry Tsumura & Co.

• 三橋 博

  北大・薬

• 瀬戸 秀夫

  Faculty of Pharmaceutical Sciences, Hokkaido University

• 瀬戸 秀夫

  北大・薬

• 林 紘司

  北大・薬

• 瀬戸 秀夫

  Faculty Of Pharmaceutical Sciences Hokkaido University

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