The preparation of the caffeine isomers 1,5,7- and 2,5,7-trimethyl-4, 6-dioxo-4,5,6,7-tetrahydro-pyrazolo[3,4-d]pyrimidines is described and their structures established. The compounds exhibit diuretic and cardiac activity.
描述了
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]
嘧啶的制备方法结构已建立。该化合物表现出利尿和心脏活性。