作者:Shoei-Sheng Lee、Uppala Venkatesham、Chitneni Prasad Rao、Sio-Hong Lam、Jung-Hsin Lin
DOI:10.1016/j.bmc.2006.10.026
日期:2007.1
5,6-Secolycorines possessing a 5,6-dihydrophenanthridine skeleton were facilely prepared from lycorine through chemical transformations, mainly including N-alkylation, Hofmann degradation type reaction, reductive cleavage of trichloroethylcarbonyl moiety, and hydrogenation. Several secolycorine derivatives showed potent inhibitory activity against acetylcholinesterase with the IC(50) value at micromolar
通过化学转化,主要由N-烷基化,霍夫曼降解型反应,三氯乙基羰基部分的还原裂解和氢化等化学转化反应,轻松地从lycorine制备出具有5,6-二氢菲啶骨架的5,6-二糖皮质激素。数个二十碳椰油碱衍生物显示出对乙酰胆碱酯酶的有效抑制活性,IC(50)值在微摩尔范围内,并且比加兰他敏更有效。