Characterization and preliminary use of 1-, 2- and 3-methyl-5-phenyl-7-chloro-1,2,3-triazolo[4,5-d]pyrimidine as reaction intermediates
作者:Giuliana Biagi、Irene Giorgi、Oreste Livi、Valerio Scartoni、Pier Luigi Barili
DOI:10.1016/s0014-827x(03)00095-8
日期:2003.8
spectroscopic methods, of three new N-methyl-5-phenyl-7-chloro-1,2,3-triazolo[4,5-d]pyrimidine isomers 3a, 3b and 3c. For comparison purpose the 3-benzyl-5-phenyl-7-chloro-1,2,3-triazolo[4,5-d]pyrimidine (7) was also prepared. Starting from the isomer mixture 3a-c and the chloroderivative 7, by nucleophilic substitution reaction with ethyl carbazate and subsequent intramolecular cyclization, the new
本文报道了三种新的N-甲基-5-苯基-7-氯-1,2,3-三唑并[4,5-d]嘧啶异构体3a,3b和3c的合成和表征。为了比较,还制备了3-苄基-5-苯基-7-氯-1,2,3-三唑并[4,5-d]嘧啶(7)。从异构体混合物3a-c和氯代衍生物7开始,通过与氨基甲酸乙酯的亲核取代反应以及随后的分子内环化反应,制备了新的三环衍生物5a-c和9,并针对苯二氮卓和腺苷A1和A2A受体进行了测试。