作者:Ademir F. Morel、Ruiess Van Fossen Bravo、Francisco de A.M. Reis、Edmundo A. Rúveda
DOI:10.1016/s0031-9422(00)81890-7
日期:1979.1
Abstract From the bark extract of S. buxifolia , the known alkaloids scutianines B, C, D and E, and the new one, scutianine H, have been isolated. The structure of scutianine H, based mainly on its MS fragmentation and on the MIKES (mass-analysed ion kinetic energy spectrum) of the base ion peak, is suggested. From the 13 C NMR spectral analysis of the diastereoisomeric scutianines D and E, information
摘要 从 S. buxifolia 的树皮提取物中分离出了已知的生物碱 scutianine B、C、D 和 E,以及新的生物碱 scutianine H。主要基于其 MS 碎裂和基础离子峰的 MIKES(质谱分析离子动能谱),建议了 scutianine H 的结构。从非对映异构体甲壳素 D 和 E 的 13 C NMR 光谱分析中,还获得了相关生物碱中 β-羟基亮氨酸单元的立体化学分配的信息。