作者:Ananthachari Srinivansan、Venkataraman Amarnath、Arthur D. Broom、F. C. Fou、Yung Chi Cheng
DOI:10.1021/jm00378a031
日期:1984.12
diastereoisomeric mixtures were evaluated as inhibitors of thymidylate synthetase derived from human tumor (HeLa) cells. The 5'-monophosphate was a potent inhibitor, competitive with respect to both 2'-deoxyuridylate (Ki = 0.06 microM) and tetrahydrofolate (Ki = 0.25 microM). In contrast, the nucleoside and the nucleotide methyl ester were poorer inhibitors by more than 3 orders of magnitude, attesting
描述了在2'-脱氧尿苷酸的甲基化中中间体的8-脱氮叶酸酯类似物的合成。将5,6,7,8-四氢-8-脱氮叶酸二乙酯与3'-O-乙酰基-5-(溴甲基)-2'-脱氧尿苷5'-[磷酸双(三氯乙基)酯]烷基化,然后除去锌/铜键和适度皂化作用的三氯乙基基团得到目标抑制剂N- [4-[[[2-氨基-3,4,5,6,7,8-六氢-4-氧代-5- [ (2'-脱氧尿素-5-基)甲基]-吡啶[3,2-d]嘧啶-6-基]甲基]氨基]苯甲酰基] -L-谷氨酸5'-单磷酸酯。相似地制备游离核苷和5'-(磷酸甲基)二酯。这些反应中的每一个都以约1:1的比例产生一对约C-6的还原的脱氮叶酸酯的非对映异构体。这些非对映异构体混合物被评估为源自人肿瘤(HeLa)细胞的胸苷酸合成酶的抑制剂。5'-单磷酸酯是有效的抑制剂,相对于2'-脱氧尿苷酸酯(Ki = 0.06 microM)和四氢叶酸(Ki = 0.25 microM)