Studies on Nilvadipine. IV. Synthesis of Deuteriated and Optically Active Isopropyl 2-Cyano-3-methoxycarbonyl-4-(3-nitrophenyl)-6-methyl-1,4-dihydropyridine-5-carboxylate (Nilvadipine).
作者:Yoshinari SATOH、Kazuo OKUMURA、Youichi SHIOKAWA
DOI:10.1248/cpb.42.950
日期:——
mass spectrometer. Nilvadipine has an asymmetric center at the C-4 position of the dihydropyridine ring, and characterization of the optical isomers with regard to their activity and bioavailability is of interest. Thus, we synthesized both the enantiomers of I by optical resolution via the 5-carboxy derivative (3), which was previously prepared as one of the metabolites of I.
我尼伐地平已经进入临床治疗高血压。在开发尼伐地平的过程中,我们制备了氘化的I类似物作为内标,用于通过毛细管柱气相色谱-负离子化学电离质谱仪测定人血浆中的I。尼伐地平在二氢吡啶环的C-4位置具有不对称中心,因此对旋光异构体的活性和生物利用度进行表征是很有意义的。因此,我们通过光学拆分经由5-羧基衍生物(3)合成了I的两个对映异构体,该衍生物先前被制备为I的代谢产物之一。