Harris G H, Fixman E C, Stermitz F R, Castedo L
Department of Chemistry, Colorado State University, Fort Collins 80523.
J Nat Prod. 1988 May-Jun;51(3):543-8. doi: 10.1021/np50057a015.
Bark of Tecoma arequipensis yielded the major alkaloidal component (-)-delta-N-normethylskytanthine whose structure was proven by X-ray diffraction analysis of the N-thiourea derivative. The stereochemistry of 1 at all four centers was enantiomeric with that of skytanthine previously reported from Tecoma stans and Skytanthus acutus. Gc-ms of the crude base fraction indicated the presence of several related alkaloids as very minor constituents.
墨西哥号角树的树皮产生了主要生物碱成分（-）-δ-N-去甲基天芥菜碱，其结构通过对N-硫脲衍生物的X射线衍射分析得到证实。在所有四个中心处，1的立体化学与先前从黄花夜香树和尖锐天芥菜中报道的天芥菜碱的立体化学呈对映体关系。粗碱馏分的气相色谱-质谱分析表明存在几种相关生物碱作为非常微量的成分。
