The present invention provides a novel compound having a superior calcium antagonism, in particular, a neuron-selective calcium antagonism. Namely, it provides a compound represented by the following formula, a salt thereof or a hydrate of them.
In the formula, Ar indicates an optionally substituted 5- to 14-membered aromatic ring etc.; the ring A indicates any one ring selected from a piperazine, a homopiperazine, a piperidine and the like; the ring B indicates an optionally substituted C3-14 hydrocarbon ring etc.; E indicates a single bond, a group represented by the formula -CO-, etc.; X indicates a single bond, an oxygen atom etc.; R1 indicates a hydrogen atom, a halogen atom, a hydroxyl group etc.; and D1, D2, W1 and W2 are the same as or different from each other and each represents a single bond or an optionally substituted C1-6 alkylene chain.
本发明提供了一种新型化合物,它具有优异的
钙拮抗作用,特别是神经元选择性
钙拮抗作用。也就是说,本发明提供了由下式表示的化合物、其盐或它们的
水合物。
式中,Ar 表示任选取代的 5 至 14 元芳香环等;环 A 表示选自
哌嗪、均
哌嗪、
哌啶等的任一环;环 B 表示任选取代的 C3-14 碳氢环等。E表示单键、由式-CO-表示的基团等;X表示单键、氧原子等;R1表示氢原子、卤素原子、羟基等;D1、D2、W1 和 W2 彼此相同或不同,各自表示单键或任选取代的 C1-6 亚烷基链。