Potential carcinostatics V. Synthesis and properties of potential inhibitors of the adenylosuccinate synthetase and adenylosuccinate lyase system
作者:M. J. Wanner、E. M. van Wijk、G. J. Koomen、U. K. Pandit
DOI:10.1002/recl.19800990106
日期:——
β,β-Dimethylaspartic acid was obtained by the aluminium-amalgam reduction of the O-methyloxime of diethyl 2-oxo-3,3-dimethyl-1,4-butanedioate and subsequent hydrolysis. The (latter) diester was conveniently prepared by the condensation of ethyl 2-bromo-2-methylpropionate with diethyl oxalate, under the influence of magnesium. β,β-Difluoroaspartic acid, threo β-methylaspartic acid and β,β-dimethylaspartic
β,β-二甲基天冬氨酸是通过铝-汞齐还原2-乙基氧代-3,3-二甲基-1,4-丁二酸二乙酯的O-甲基肟并随后水解而获得的。(后)二酯可通过在镁的影响下将2-溴-2-甲基丙酸乙酯与草酸二乙酯缩合而方便地制备。将β,β-二氟天冬氨酸,苏式β-甲基天冬氨酸和β,β-二甲基天冬氨酸(作为外消旋物)与6-氯嘌呤-9-基核糖核苷偶联,得到相应的核苷。通过与O 2,O 3偶联,将碱金属7-氧代-7 H-吡啶基[2.1 - i ]嘌呤-9-羧酸盐和6- [2,3-双(甲氧基羰基)丙基]嘌呤转化为相应的核苷。,O 5-三苯甲酰基核呋喃呋喃糖基氯和保护基的去除。介绍了对白血病P-388的生物学测试结果。