The alkaloid composition of the following three Hawaiian Rauwolfia species–R. sandwicensis A.DC., R. degeneri Sherff and R. mauiensis Sheriff–was determined. Aside from the known aklakoids serpentinine, ajmaline, tetraphylline and tetraphyllicine there were encountered trace amounts of two new dihydroindole alkaloids, mauiensine and sandwicensine as well as larger quantities of an isomer of ajmaline
以下三个夏威夷的
生物碱成分萝芙木属物种R. sandwicensis A.DC.,R. degeneri Sherff和R. mauiensis警长-测定。除了已知的aklakoids蛇纹石碱,ajmaline,四氢茶碱和四氢茶碱外,还遇到了痕量的两种新的二氢
吲哚生物碱,mauiensine和sandwicensine,以及大量的ajmaline异构体,其被称为sandwicine(C 20 H 26 N 2 O 2)。由于沙威辛和阿兹玛琳产生不同的二氢衍
生物,它们可通过四
乙酸铅氧化转化为常见的
吲哚半缩醛,因此沙威辛代表了阿玛琳的C-17差向异构体。发现二氢
山梨糖苷与阿马啶的
硼氢化钠还原产物四氢阿马丁啶相同,从而证明阿马丙啶为17-脱氢阿马琳。