Studies on the chemical transformations of rotenoids.<b>5</b>. Synthesis and cytotoxicity of 1,3-diazepino[5,6-<i>b</i>]benzofuran and pyridazino[4,5-<i>b</i>]benzofurans fused with thiazole, imidazole and pyrimidine
作者:Shin-ichi Nagai、Taisei Ueda、Hiroyuki Sakakibara、Akito Nagatsu、Nobutoshi Murakami、Jinsaku Sakakibara
DOI:10.1002/jhet.5570350316
日期:1998.5
3-d]pyridazinium chlorides fused with thiazole 5a, imidazole 5b-c and pyrimidine 5d-f were prepared starting from 4-chloropyridazino[4,5-b]benzofuran 3a. Treatment of 5b, 5d and 5e with 10% potassium carbonate solution provided the corresponding free bases 6a-c. Ring closure of methyl rotenononate 1b with amidines proceeded in the presence of sodium methoxide to give 1,3-diazepino[5,6-b]benzofuran-5-ones 7a-c
从4-氯哒嗪并[4,5- b ]苯并呋喃3a开始,制备了与噻唑5a,咪唑5b-c和嘧啶5d-f融合的新型苯并呋喃[2,3- d ]吡啶鎓氯化物。用10%碳酸钾溶液处理5b,5d和5e提供了相应的游离碱6a-c。在甲醇钠的存在下,用s进行甲基罗托诺诺酸酯1b的闭环反应,得到1,3-二氮杂ino [ 5,6- b ]苯并呋喃-5-酮7a-c。化合物5d显示出对P388和L1210白血病细胞的细胞毒性。