New synthesis of N-[4-[[(2-amino-4(3H)-oxopyrido[3,2-d]pyrimidin-6-yl)methyl]amino]benzoyl]-L-glutamic acid (8-deazafolic acid) and the preparation of some 5,6,7,8-tetrahydro derivatives
作者:Carroll Temple、C. L. Kussner、J. D. Rose、D. L. Smithers、L. L. Bennett、J. A. Montgomery
DOI:10.1021/jm00142a025
日期:1981.10
bacteria, Streptococcus faecium (ATCC 8043) and Lactobacillus casei (ATCC 7469), and to have activity against lymphoid leukemia L1210 in mice. To examine the 5,6,7,8-tetrahydro derivatives, a new synthesis of 17 was developed from 8-deaza-2,4-dichloro-6-methylpteridine. Treatment of the latter with aqueous base gave the corresponding pteridin-4(3H)-one, which was aminated with ammonia to give 8-deaza-6-methylpterin
以前,8-脱氮草酸(17)被证明是叶酸依赖性细菌粪便链球菌(ATCC 8043)和干酪乳杆菌(ATCC 7469)的有效抑制剂,并具有抗小鼠淋巴白血病L1210的活性。为了检查5,6,7,8-四氢衍生物,从8-脱氮-2,4-二氯-6-甲基蝶啶开发了17的新合成物。用碱的水溶液处理后者,得到相应的蝶啶-4(3H)-1,将其氨化以得到8-脱氮-6-甲基蝶呤(9)。9的溴化反应主要产生8-deaza-6-(三溴甲基)蝶呤,与对氨基苯甲酰基-L-谷氨酸反应,形成17的9-氧代衍生物。相反,2-乙酰基的溴化反应9的衍生物主要得到相应的6-(溴甲基)蝶呤,将其以23%的收率(从9)转化为17。在碱性介质或甲酸中,在大气压和室温下氢化17均不成功。在三氟乙酸中,发生过度还原,得到含有8-脱氮-5,6,7,8-四氢-6-甲基蝶呤和5,6,7,8-四氢衍生物的混合物。后者的特征在于转化为该亚甲基类似物21也