- 著者
- 工藤 恵子 宮原 一元 丸林 信洋 川崎 敏男
- 出版者
- The Pharmaceutical Society of Japan
- 雑誌
- Chemical and Pharmaceutical Bulletin (ISSN:00092363)
- 巻号頁・発行日
- vol.32, no.10, pp.4229-4232, 1984-10-25 (Released:2008-03-31)
- 参考文献数
- 16
- 被引用文献数
- 6 21
The structure of one of the minor compounds, which coexists only with a 25β (S)-spirostanol glycoside (a steroid saponin) such as I, II, XI and XV, was determined to be the corresponding 22β (S)-0, 25α (S) analog Ia, IIa, XIa and XVa, respectively. Since it was believed that all the natural spirostanol glycosides have the 22α (R)-O configuration, these compounds are worthy of note as the first glycosides of 22β (S)-O-spirostanol so far isolated.
- 著者
- 阿部 フミ子 長尾 常敦 岡部 光 山内 辰郎 丸林 信洋 上田 幾彦
- 出版者
- The Pharmaceutical Society of Japan
- 雑誌
- Chemical and Pharmaceutical Bulletin (ISSN:00092363)
- 巻号頁・発行日
- vol.38, no.8, pp.2127-2129, 1990-08-25 (Released:2008-03-31)
- 参考文献数
- 5
- 被引用文献数
- 7 10
Parsonsianine, a 14-membered macrocyclic pyrrolizidine alkaloid, composed of retronecine, (2S, 3R)-2, 3-dihydroxy-2-ethylbutanoic acid and (2R, 3S)-2, 3-dihydroxy-2-isopropylbutanedioic acid, was isolated from the leaves of Parsonsia laevigata and the structure was determined by means of nuclear magnetic resonance and X-ray analysis.
1 0 0 0 OA The Structure of Daturametelin D
- 著者
- 新宮 一司 古澤 世理子 丸林 信洋 上田 幾彦 矢原 正治 野原 稔弘
- 出版者
- The Pharmaceutical Society of Japan
- 雑誌
- Chemical and Pharmaceutical Bulletin (ISSN:00092363)
- 巻号頁・発行日
- vol.38, no.10, pp.2866-2867, 1990-10-25 (Released:2008-03-31)
- 参考文献数
- 9
- 被引用文献数
- 4 7
The structure of a new withanolide, (17R, 20R, 22R, 25R)-21, 24R-epoxy-27-methoxy-1-oxowitha-2, 5-dienolide, isolated from the methanolic extract of the fresh aerial parts of Datura metel L. (Solanaceae), was established by X-ray analysis.