Condensation of guanidine with diethyl 2-formylbutanedioate (XI), diethyl 2-cyanobutanedioate (XII), diethyl 2-cyanoheptanedioate (XIII), ethyl 6,6-dicyanohexanoate (XIV), or diethyl 6,6-dicyanoundecanedioate (XV), followed by hydrolysis of the esters formed, afforded the respective substituted ω-(2-amino-5-pyrimidinyl)alkanoic acids (II, V, VI, IX and X). Analogously, condensation of the ester XIII with urea or thiourea gave acids VII and VIII. The acid II was converted into its ethyl and butyl ester (III and IV, respectively). The compounds prepared showed no significant antineoplastic effects in mice with experimental tumours.
将
胍与
二乙基2-甲酰基
丁二酸酯(XI)、
二乙基2-
氰基
丁二酸酯(XII)、
二乙基2-
氰基
庚二酸酯(XIII)、乙基6,6-二
氰基
己酸酯(XIV)或
二乙基6,6-二
氰基
十一酸酯(XV)缩合,然后
水解生成的酯,得到相应的取代的ω-(2-
氨基-5-
嘧啶基)
脂肪酸(II、V、VI、IX和X)。类似地,酯XIII与
脲或
硫脲缩合后,得到酸VII和VIII。酸II转化为其乙酰和丁酰酯(III和IV)。所制备的化合物在实验性肿瘤小鼠中未显示出显着的抗肿瘤效果。