等摩尔量的2-氨基苄胺和靛红在乙酸中的回流以良好的产率产生了吲哚[3,2 - c ]喹啉-6-酮。提出了一种涉及螺环化合物初始形成的机制。该可分离的中间体随后通过顺序的异氰酸酯开环和环化过程重排为脲衍生物,该脲衍生物最终环化为吲哚[3,2 - c ]喹啉-6-酮。尿素衍生物可单独制备并选择性环化为吲哚[3,2- c]喹啉-6一。N-乙酰基Isatin与2-氨基苄基胺在室温下反应生成1,4-苯并二氮杂酮3-(2-乙酰氨基苯基)-1,5-二氢-1,4-苯并二氮杂-2-酮,而其异构体2(2-乙酰氨基苯并室温下由2-(2-乙酰氨基苯基)-N-(2-氨基苄基)-2-氧乙酰胺在乙酸中获得)-4,5-二氢-1,4-苯并二氮杂-3-酮。
Synthesis and Antiplasmodial Activity of Aminoalkylamino-Substituted Neocryptolepine Derivatives
摘要:
A series of chloro- and aminoalkylamino-substituted neocryptolepine (5-methyl-5H-indolo[2,3-b]quinoline) derivatives were synthesized and evaluated as antiplasmodial agents. The evaluation also included cytotoxicity (MRCS cells), inhibition of beta-hematin formation, and DNA interactions (DNA-methyl green assay). Introduction of aminoalkylamino chains increased the antiplasmodial activity of the neocryptolepine core substantially. The most efficient compounds showed antiplasmodial activities in the nanomolar range. N-1,N-1-Diethyl-N-4-(5-methyl-5H-indolo[2,3-b]quinolin-8-yl)pentane-1,4-diamine 11c showed an IC50 of 0.01 mu M and a selectivity index of 1800.
Total synthesis of dehaloperophoramidine using a highly diastereoselective Hosomi–Sakurai reaction
作者:Ross. P. Wilkie、Andrew R. Neal、Craig A. Johnston、Nicholas Voute、Christopher S. Lancefield、Matthew D. Stell、Federico Medda、Edward F. Makiyi、Emma M. Turner、O. Stephen Ojo、Alexandra M. Z. Slawin、Tomas Lebl、Peter Mullen、David J. Harrison、Chris M. Ireland、Nicholas J. Westwood
DOI:10.1039/c6cc05747k
日期:——
The synthesis of dehaloperophoramidine, a non-halogenated derivative of the marine natural product perophoramidine, is reported. The key steps included a [3,3]-Claisen rearrangement and an epoxide opening/allylsilylation (modified Hosomi-Sakurai) reaction to...