申请人:Eli Lilly and Company
公开号:US04000275A1
公开(公告)日:1976-12-28
Benzimidazo[2,1-b]quinazolin-12(6H)ones, immunosuppressives and agents for treatment of auto-immune diseases, are prepared via (1) reacting a 2-chlorobenzimidazole with an anthranilic acid or ester; (2) reacting a 2-aminobenzimidazole with an anthranilic acid or ester in the presence of trifluoroacetic acid or (3) reacting a 2-methylmercaptobenzimidazole with an anthraniloyl halide hydrohalide.
Benzimidazo[2,1-b]quinazolin-12(6H)ones是一种免疫抑制剂和治疗自身免疫疾病的药物,制备方法如下:(1)将2-氯苯并咪唑与吗啉酸或酯反应;(2)在三氟乙酸存在下,将2-氨基苯并咪唑与吗啉酸或酯反应;(3)将2-甲基硫代苯并咪唑与吗啉酰卤化物水合物反应。