胸苷磷酸化酶(TP)是一种促进肿瘤生长和转移的酶,因此是有吸引力的可药物治疗靶标。使用已报道的TP抑制剂7-脱氮黄嘌呤(7DX)作为先导化合物;进行这项研究是为了评估吡唑并[1,5- a ] [1,3,5]三嗪-2,4-二酮和吡唑并[1,5- a ] [1,3,5]三嗪-2- thioxo-4-ones将表现出TP抑制活性。吡唑并[1,5- a ] [1,3,5]三嗪核是通过将1,3,5-三嗪环环化到吡唑支架上的反应构建的。在合成和测试的52种化合物中,发现1,3-二氢-吡唑并[1,5- a ] [1,3,5] triazin-2-thioxo-4-ones对TP表现出不同程度的抑制活性。 。最好的化合物17p带有对位取代的五氟硫基的,其IC 50值为0.04μM, 在相同的生物测定条件下,其效价是7DX(IC 50 = 32μM)的800倍左右。研究结果表明,在吡唑并[1,5- a ] [1
REACTIONS OF CHLOROCARBONYL ISOCYANATE WITH 5-AMINOPYRAZOLES AND ACTIVE METHYLENE NITRILES: A NOVEL SYNTHESIS OF PYRAZOLO[1,5-a]-1,3,5-TRIAZINES AND BARBITURATES
作者:Galal H. Elgemeie、Samia R. El-Ezbawy、Hany A. Ali
DOI:10.1081/scc-100106205
日期:2001.1
Reactions of chlorocarbonyl isocyanate and chlorosulfonyl isocyanate with aminopyrazoles and activemethylenenitriles are reported. They lead to novel pyrazolo[1,5-a]-1,3,5-triazines and barbituric acid derivatives. The structures of the products and the mechanisms of their formation are reported.