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 (I), a salt thereof or a hydrate of them:
wherein Ar is a thiophene or benzene ring which may be substituted,the ring A is a piperazine ring, homopiperazine ring or piperidine ring which may be substituted, the ring B is a C6-14 aromatic hydrocarbon ring or 5- to 14-membered aromatic heterocyclic ring which may be substituted, the partial structure -D1-E-D2- is a C1-4 alkylene group, W1 and W2 are the same as or different from each other and each represents (1) a single bond or (2) a C1-6 alkylene chain which may be substituted, X is (1) an oxygen atom, a group represented by (2) the formula -NR2- (wherein R2 indicates a hydrogen atom, or a C1-6 alkyl group, a C3-8 cycloalkyl group, a lower acyl group or a C1-6 alkylsulfonyl group which may be substituted) or (3) -NH-SO2-, R1 is a methyl group, an ethyl group, a n-propyl group or an isopropyl group.
本发明提供了一种新型化合物,它具有优异的
钙拮抗作用,尤其是神经元选择性
钙拮抗作用。也就是说,本发明提供了由下式(I)代表的化合物、其盐或它们的
水合物:
其中 Ar 是可被取代的
噻吩环或
苯环,环 A 是可被取代的
哌嗪环、均
哌嗪环或
哌啶环,环 B 是可被取代的 C6-14
芳烃环或 5-14 元芳香杂环,部分结构 -D1-E-D2- 是 C1-4
烯基、W1和W2彼此相同或不同,各自代表(1)单键或(2)可被取代的C1-6亚烷基链,X是(1)
氧原子、由(2)式-NR2-(其中R2表示
氢原子)代表的基团或C1-6烷基、或 C1-6 烷基、C3-8
环烷基、低级酰基或可能被取代的 C1-6 烷基磺酰基)或 (3) -NH-SO2- 所代表的基团,R1 是
甲基、乙基、正丙基或
异丙基。