Heilmittelchemische Studien in der heterocyclischen Reihe. 25. Mitteilung. Pyrazolo-pyrimidine III Paraxanthin-, Theobromin- und Theophyllin-Analoga der Pyrazolo[3,4-d]pyrimidin-Reihe
作者:P. Schmidt、K. Eichenberger、J. Dreuey
DOI:10.1002/hlca.19590420132
日期:——
The preparation of the paraxanthine, theobromine and theophylline isomers 1,5-; 2,5- and 1,7-; 2,7- and 5,7-dimethyl-4,6-dioxo-4,5,6,7-tetrahydro-pyrazolo[3,4-d]-pyrimidines is described and their structure established. A structurally specific synthesis of the caffeine and isocaffeine isomers 1,5,7- and 2,5,7-trimethyl-4,6- dioxo-4,5,6,7-tetrahydro-pyrazolo [3,4-d]pyrimidines has been realized.
对黄嘌呤,可可碱和茶碱异构体1,5-的制备;2.5和1.7;描述了2,7-和5,7-二甲基-4,6-二氧代-4,5,6,7-四氢-吡唑并[3,4-d]-嘧啶并确定了它们的结构。咖啡因和异咖啡因异构体1,5,7-和2,5,7-三甲基-4,6-二氧代-4,5,6,7-四氢吡唑并[3,4-d]嘧啶的结构特异性合成实现。