Condensation of 1,1,ω-alkanetricarboxylic acids triethyl esters XIV-XXI with guanidine gave ω-(2-amino-6-hydroxy-4-oxo-3,4-dihydro-5-pyrimidinyl) alkanoic acids I-IV, VI-VIII, XIII of which some were converted to derivatives (ethyl ester V, N-acyl derivatives XI and XII). Similarly, triester XVII gave by condensation with urea or thiourea the analogous 5-substituted derivatives of barbituric acid X, and thiobarbituric acid IX, respectively. The structures of selected compounds of this group (IV, V, IX-XI and XIII) were determined by spectral methods. Of interest, from the pharmacological point of view, has proved compound IV, which exhibited a significant antineoplastic effect on some experimental tumours in mice and rats, and enhanced the action of some current cytostatics.
1,1,ω-烷基三羧酸三乙酯与胍啉缩合得到了ω-(2-氨基-6-羟基-4-氧代-3,4-二氢-5-嘧啶基) 烷酸,其中一些转化为衍生物(乙酯酯,N-酰基衍生物和)。类似地,三酯与尿素或硫脲缩合得到了相应的5-取代衍生物。这个组合物的结构(IV、V、IX-XI和XIII)通过光谱方法确定。其中,显示出显著抗肿瘤作用的化合物是IV,对小鼠和大鼠的一些实验性肿瘤有显著的抗肿瘤作用,并增强了某些当前细胞毒药物的作用。