(+/-)-N-[1-Methyl-4-(3-methylbenzyl)hexahydro-1H-1,4-diazepin-6-yl]-1H-indazole-3-carboxamide (+/-)-1 was prepared from N-methyl-N'-(3-methylbenzyl)-ethylenediamine 5 and 2-(1-benzyloxycarbonyl-1H-indazole-3-carbonylamino)propenal 4 and was found to exist as a racemic mixture based on the melting point, solubility, infrared spectrum, and X-ray diffraction pattern. Resolution by a preferential crystallization of (+/-).1 and successive recrystallization from acetone gave the enantiomerically pure (R)-isomer, which showed a potent and selective 5-HT3 receptor antagonistic activity. (C) 1997 Elsevier Science Ltd.
(±)-N-[1-甲基-4-(3-甲基苯甲基)六氢-1H-1,4-二氮杂环庚-6-基]-1H-
吲唑-3-甲酰胺 (±)-1 是由 N-甲基-N'-(3-甲基苯甲基)
乙二胺 5 和 2-(1-苯甲氧基羰基-1H-
吲唑-3-羰基
氨基)
丙烯醛 4 合成的,并被发现为外消旋混合物,这基于其熔点、溶解性、红外光谱和 X 射线衍射图。通过选择性结晶得到 (±).1 并从
乙酸乙酯中进行后续重结晶,得到了光学纯的 (R)-异构体,其显示出对 5-HT3 受体的强效且选择性的拮抗活性。
© 1997 Elsevier Science Ltd.