11 ガガイモ科植物成分の研究 : 漢薬芫花葉白前の配糖体について

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概要

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• Chinese crude drug "Pai-ch'ien", dried root of Cynanchum glaucescens Hand-Mazz has been used as an antitussive and expectorant in china. We report herein that five glycosides: glaucoside-A (5), -B (6), -C (7), -D (8), -E (10) were isolated from this drug by repeated silica gel column chromatography. New aglycones glaucogenin-A (2) and -B (3) possessing novel 13, 14: 14, 15-diseco-pregnane type skeleton were isolated from the hydrolysate of crude glycosides and their structures were characterized by chemical and spectroscopic evidences. The sugar linkages of 5, 6, 7, 8, 10 were deduced as Chart 1 by ^<13>C-NMR, FD-MS and the analyses of the hydrolysates.

• 天然有機化合物討論会の論文
• 1981-09-10

著者

• 中川 喬

  津村研

• 三橋 博

  北大薬学部

• 林 紘司

  北大薬

• 三橋 博

  Research Institute For Biology & Chemistry Tsumura & Co.

• 三橋 博

  Tsumura Institute For Biology And Chemistry

• 林 紘司

  Tsumura Central Research Laboratories Tsumura & Co.

• 三橋 博

  北大薬学科

• 中川 喬

  北大薬

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