Synthesis and antitumor activity of 10-alkyl-10-deazaminopterins. A convenient synthesis of 10-deazaminopterin
作者:J. I. DeGraw、V. H. Brown、H. Tagawa、R. L. Kisliuk、Y. Gaumont、F. M. Sirotnak
DOI:10.1021/jm00352a026
日期:1982.10
Requirements for large-scale synthesis of the potent antitumor drug 10-deazaminopterin have led to development of a facile synthesis of this compound and its 10-alkyl analogues. The lithium diisopropyl amide generated dianions of appropriate p-alkylbenzoic acids were alkylated with 3-methoxyallyl chloride. The resulting 4-(p-carboxyphenyl)-1-methoxy-1-butenes were brominated at pH 7-8 to afford the
大规模合成有效的抗肿瘤药10-脱氮蝶呤的要求导致了该化合物及其10-烷基类似物的简便合成的发展。用3-甲氧基烯丙基氯将适当的对烷基苯甲酸的二异丙基氨基锂锂生成的二价阴离子烷基化。在pH 7-8下将所得的4-(对羧基苯基)-1-甲氧基-1-丁烯溴化,得到2-溴-4-(对羧基苯基)丁醛。与2,4,5,6-四氨基嘧啶缩合,然后原位氧化所得的二蝶啶,得到结晶的10-烷基-10-脱氮基-4-氨基-4-脱氧蝶酸。通过混合酸酐法将蝶酸与谷氨酸二乙酯偶联,然后在室温下皂化,以得到目标10-脱氮蝶呤类化合物。10-烷基化合物作为叶酸依赖性细菌的生长抑制剂与10-脱氮蝶呤大致相等。它们抑制干酪乳杆菌和L1210衍生的二氢叶酸还原酶的能力也相似。体外转运特性提示10-烷基类似物的治疗指数得到改善。相对于小鼠中的L1210,在LD10剂量下,寿命延长百分比为+ 151%(甲氨蝶呤),+ 178%(10-脱氮蝶呤),+