通过3(,5)-(di)chloro-2 H -1,4-(benz)oxazin-2-ones与叠氮化钠或重氮化合物的反应合成新的1 H-四唑和1,2,3-三唑
摘要:
3,5-dichloro-2 H -1,4-oxazin-2-ones和3-chloro-2 H -1,4-benzoxazin-2-ones与叠氮化钠和重氮化合物等双功能试剂反应生成bi(tri环四唑或三唑稠合的中间体通过分子内环化反应。这些内酯中间体与各种亲核试剂的转化产生了新的取代的1 H-四唑或1,2,3-三唑,可用于药理筛选以及通过N-1处的α-氯酮取代基进一步加工。
Synthesis of 2-(2,3-dihydro-2-oxo-1,3,4-oxadiazol-5-yl) benzo heterocycles. A novel series of orally active antiallergic agents
作者:John H. Musser、Richard E. Brown、Bernard Loev、Kevin Bailey、Howard Jones、Robert Kahen、Fuchih Huang、Atul Khandwala、Mitchell Leibowitz
DOI:10.1021/jm00368a004
日期:1984.2
A series of new 2-(2,3-dihydro-2-oxo-1,3,4-oxadiazol-5-yl) benzo heterocycles has been prepared. These compounds were tested as inhibitors of antigen-induced release of histamine (AIR) in vitro from rat peritoneal mast cells (RMC) and as inhibitors of IgE-mediated rat passive cutaneous anaphylaxis in the rat (PCA). Most of this new class of antiallergic agents showed good activity in the RMC assay