2,4-Diamino-5-chloroquinazoline Analogs of Trimetrexate and Piritrexim: Synthesis and Antifolate Activity
作者:Andre Rosowsky、Clara E. Mota、Joel E. Wright、Sherry F. Queener
DOI:10.1021/jm00052a011
日期:1994.12
and the T. gondii enzyme were those with an ArCH2-NH or ArNHCH2 side chain. Among ArNH(CH2)n compounds with n = 1-3 and either 2',5'-dimethoxyphenyl or 3',4',5'-trimethoxyphenyl as the Ar moiety, activity decreased in the order n = 1 > n = 2 > n = 3. The best inhibitor of P. carinii DHFR, 2,4-diamino-5-chloro-6-[(N-methyl-3',4',5'-trimethoxyanilino)methy l] quinazoline (10) had an IC50 of 0.012 microM
合成了十种迄今为止未描述的曲美曲塞(TMQ)和派瑞特辛(PTX)的2,4-二氨基-5-氯喹唑啉类似物,并作为大鼠肝,卡氏肺孢子虫和弓形虫的二氢叶酸还原酶(DHFR)抑制剂进行了测试。对抗卡氏疟原虫和弓形虫的最活跃的喹唑啉是具有ArCH2-NH或ArNHCH2侧链的喹唑啉。在n = 1-3和2',5'-二甲氧基苯基或3',4',5'-三甲氧基苯基作为Ar部分的ArNH(CH2)n化合物中,活性按n = 1> n = 2的顺序降低> n =3。Carinii DHFR的最佳抑制剂,2,4-二氨基-5-氯-6-[(N-甲基-3',4',5'-三甲氧基苯胺基)甲基l]喹唑啉(10) IC50为0.012 microM,比TMQ和PTX的效力略高。化合物10还是弓形虫DHFR的最佳抑制剂,IC50为0.0064 microM,再次对应于TMQ和PTX活性的轻微增加。但是,与这些标准试剂一样,相对于大