Spirostane derivatives highly oxygenated at A and B rings from the rhizomes of <math><mtext>rohdea</mtext></math><math><mtext>japonica</mtext></math> roth and of <math><mtext>campylandra aurantiaca</mtext></math> baker期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Spirostane derivatives highly oxygenated at A and B rings from the rhizomes of $rohdea$ $japonica$ roth and of $campylandra aurantiaca$ baker

Authors:	Kazumoto Miyahara Fumio Kumamoto Toshio Kawasaki

Institution:	Faculty of Pharmaceutical Sciences, Kyushu University Higashi-Ku, Fukuoka 812, Japan

Abstract:	Two steroidal compounds BR-1 (I) and ?2 (II) which had been obtained from the rhizomes of $Campylandra aurantiaca$ Baker, were isolated also from those of $Rohdea japonica$ Roth. They were identified, respectively, by X-ray analysis and chemical correlation as 1β,2β,3β,4β,5β,7α-hydroxy-spirost-25(27)-en-6-one and its corresponding 6β-hydroxy compound.

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