21 Diosbulbin-B,-Aの立体構造

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概要

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• Diosbulbin B, C_<19>H_<20>O_6, and A, C_<20>H_<24>O_7, (formerly called bulbiferin B and A) are the furano-norditerpenes obtained from the root tubers of Dioscorea bulbifera L. forma spontanea Makino et Nemoto (Nigakashu, in japanese). They had been tentatively assigned the formulas (1) and (2), but a further investigation of the structures, particularly on the site of the ether linkage, has led to revision of the structures as (6) and (7) in which ether oxygen is attached to C-8 and C-12 and tertiary methyl group is located at C-5. The stereochemistry of B, A and their derivatives has been studied and the configurations shown in formulas (6) and (7) have been proposed for B and A, respectively. N.M.R., O.R.D., and Mass spectral data and other experimental results which support the above structures are presented and discussed.

• 天然有機化合物討論会の論文
• 1967-09-25

著者

• 古森 徹哉

  九大薬

• 川崎 敏男

  九大薬

• 瀬戸口 信郎

  Faculty of Pharmaceutical Sciences, Kyushu University

• 瀬戸口 信郎

  九大薬

• 瀬戸口 信郎

  Faculty Of Pharmaceutical Sciences Kyushu University

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