Studies on Nilvadipine. III. Syntheses of Metabolites of Nilvadipine and Their Related Compounds.
作者:Yoshinari SATOH、Kazuo OKUMURA、Youichi SHIOKAWA
DOI:10.1248/cpb.40.1799
日期:——
Nilvadipine (I), isopropyl 2-cyano-3-methoxycarbonyl-6-methyl-4-(3-nitrophenyl)-1, 4-dihydropyridine-5-carboxylate, has a unique 1, 4-dihydropyridine structure in that the substituents at all five positions of the nucleus differ from one another. It is an excellent calcium antagonist drug in terms of its potency, its duration of action and its selectivity in the blood vascular system.During the development of I, some metabolites were isolated from the urine and bile of both rats and dogs afteroral administration. With data obtained from the metabolism of known 1, 4-dihydropyridines at hand, we proposed the synthesis of a series of compounds (1-11) for comparison with the metabolites isolated from I as a method for structure determination. Indeed, of the compounds synthesized five of them (3-7) were found to coincide with the metabolites from both rat and dog urine and bile isolates.
尼伐地平(I)是 2-氰基-3-甲氧羰基-6-甲基-4-(3-硝基苯基)-1, 4-二氢吡啶-5-羧酸异丙酯,具有独特的 1, 4-二氢吡啶结构,其核的五个位置上的取代基彼此不同。在 I 的研发过程中,从大鼠和狗口服后的尿液和胆汁中分离出了一些代谢物。根据已知 1,4-二氢吡啶的代谢数据,我们提议合成一系列化合物(1-11),与从 I 中分离出的代谢物进行比较,以此作为确定结构的方法。事实上,在合成的化合物中,我们发现其中五个(3-7)与从大鼠和狗的尿液和胆汁中分离出来的代谢物相吻合。