Utilization of cleavage of the [1]benzofuro[2,3-<i>e</i>][1,2,4]triazine ring for the synthesis of oxygen, nitrogen and sulfur derivatives of [1,2,4]triazine
作者:Jakub Stýskala、Jan Slouka、Iveta Wiedermannová、Petr Bednář
DOI:10.1002/jhet.5570400509
日期:2003.9
A series of 6-azacytosines 4a-4k and 5a-5c were prepared by nucleophilic cleavage of furan ring of [1]benzofuro[2,3-e][1,2,4]triazine derivative 1. Some of them were used for the preparation of derivatives of [1,2,4]triazolo[4,3-d][1,2,4]triazine (6a-6d) and tetrazolo[1,5-d][1,2,4]triazine (7). The reaction of 1 with hydrogen sulfide afforded the corresponding 6-(2-hydroxyphenyl)-2-phenyl-5-thioxo-4
通过亲核裂解[1]苯并呋喃[2,3- e ] [1,2,4]三嗪衍生物1的呋喃环,制备了一系列6-氮杂胞嘧啶4a-4k和5a-5c。其中一些用于制备[1,2,4]三唑[4,3- d ] [1,2,4]三嗪(6a-6d)和四唑[1,5- d ] [1的衍生物,2,4]三嗪(7)。1与硫化氢的反应得到相应的6-(2-羟苯基)-2-苯基-5-硫代-4,5-二氢-1,2,4-三嗪3(2 H)- 8),而使用硒化氢6-(2-羟苯基)-2-苯基-4,5-二氢-1,2,4-三嗪-3(2 H)-一(9)成立。测试了所制备的化合物的生物活性。