Synthesis of 3-(2-guanidinoethyl) and 3-[2-(<i>S</i>-methylisothioureidoethyl)] analogs of 5-isopropyl 2,6-dimethyl-1,4-dihydro-4-(2,3-dichlorophenyl)pyridine-3,5-dicarboxylate as a respective releaser of nitric oxide and inhibitor of nitric oxide synthase
作者:Nadeem Iqbal、Edward E. Knaus
DOI:10.1002/jhet.5570330127
日期:1996.1
3-(2-aminoethyl) product 8 was elaborated to the title compound 3-[2-(S-methylisothioureidoethyl)] 5-isopropyl 2,6-dimethyl-1,4-dihydro-4-(2,3-dichlorophenyl)pyridine-3,5-dicarboxylate hydrochloride (12) via the intermediate 3-(2-thioureidoethyl) compound 10. The 3-(2-guanidinoethyl 9 and 3-[2-(S-methylisothioureidoethyl)] 12 compounds were about 116- and 23-fold less potent calcium channel antagonists, respectively
乙酰乙酸2-叠氮基乙酯与2,3-二氯苯甲醛和3-氨基巴豆酸异丙酯的汉茨缩合反应得到3-(2-叠氮基乙基)5-异丙基2,6-二甲基-1,4-二氢-4-(2,3-二氯苯基) )-3,5-二羧酸吡啶(7)。使用5%碳酸钯钯和氢气还原7的3-(2-叠氮基乙基)部分,得到3-(2-氨基乙基)衍生物8,其使用1 H-吡唑-1-基进行鸟嘌呤化。羧box盐酸盐产生目标3-(2-胍基乙基)类似物9。将3-(2-氨基乙基)产物8精制为标题化合物3- [2-(S-甲基异硫脲基乙基] ]经由中间物3-(2-硫脲基乙基)化合物的5,异丙基2,6-二甲基-1,4-二氢-4-(2,3-二氯苯基)吡啶-3,5-二羧酸盐酸盐(12)10。相对于参考药物硝苯地平,3-(2-胍基乙基9和3- [2-(S-甲基异硫脲基乙基)] 12化合物的有效钙通道拮抗剂分别低约116倍和23倍。