Synthesis of fused [1,2,6]thiadiazine 1,1-dioxides as potential transition-state analog inhibitors of xanthine oxidase and guanase
作者:Rich B. Meyer、Edward B. Skibo
DOI:10.1021/jm00194a011
日期:1979.8
Ring closure of ethyl 3-aminopyrazole-4-carboxylate with sulfamoyl chloride gave 1,7-dihydropyrazolo[3,4-c][1,2,6]thiadiazine-4(3H)-one 2,2-dioxide. The corresponding 4-amino analogue of this new heterocyclic ring system was similarly prepared from 3-aminopyrazole-4-carbonitrile. Treatment of 4,5,6-triamino-2H-1,2,6-thiadiazine 1,1-dioxide with N-thionylaniline gave a derivative of another new ring
用氨磺酰氯将3-氨基吡唑-4-羧酸乙酯闭环,得到1,7-二氢吡唑并[3,4-c] [1,2,6]噻二嗪-4(3H)-1,2-二氧化物。该新的杂环系统的相应的4-氨基类似物类似地由3-氨基吡唑-4-腈制备。用N-亚硫酰苯胺处理4,5,6-三氨基-2H-1,2,6-噻二嗪1,1-二氧化物得到另一种新的环系统的衍生物7-氨基-4H- [1,2,5]噻二唑[3,4-c] [1,2,6]噻二嗪5,5-二氧化物。这些化合物以及相应的4-氨基-和4-羟基咪唑[4,5-c] [1,2,6]噻二嗪2,2-二氧化物被检测为潜在的黄嘌呤氧化酶和鸟嘌呤氨基水解酶的过渡态类似物抑制剂。其中两种化合物与鸟嘌呤氨基水解酶的Ki值约为2x 10(-4)M,