The present invention provides dihydropyridine derivatives represented by the following formula (I)
wherein R1 represents a lower alkyl group which may or may not have a substituent group, a lower cycloalkyl group which may or may not have a substituent group, a lower alkenyl group which may or may not have a substituent group, a lower alkynyl group which may or may not have a substituent group, or 3,4-dihydro-2H-benzo[b]pyran-4-yl group which may or may not have a substituent group; R2 and R3, which may or may not be the same, independently represent a lower alkyl group which may or may not have a substituent group, amino group or a cyano group; X represents an aryl group which may or may not have a substituent group, or an unsaturated heterocyclic group which may or may not have a substituent group; and Y represents a 3,4-dihydro-2H-benzo[b]pyran-4-yl group which may or may not have a substituent group; and salts thereof. They have extremely strong, slow and long-acting vasodilating action and antihypertensive action with less adverse effects so that they are useful as therapeutic agents for cardiovascular diseases.
本发明提供了由下式(I)代表的二氢
吡啶衍生物
其中 R1 代表可以有或没有取代基的低级烷基、可以有或没有取代基的低级环烷基、可以有或没有取代基的低级烯基、可以有或没有取代基的低级炔基或可以有或没有取代基的 3,4-二氢-2H-苯并[b]
吡喃-4-基;R2 和 R3(可以相同,也可以不相同)独立地代表可以有取代基,也可以没有取代基的低级烷基、
氨基或
氰基;X 代表可以有取代基,也可以没有取代基的芳基,或可以有取代基,也可以没有取代基的不饱和杂环基;Y 代表可以有取代基,也可以没有取代基的 3,4-二氢-2H-苯并[b]
吡喃-4-基;及其盐类。它们具有极强、缓慢和长效的血管扩张作用和降压作用,且不良反应较少,因此可作为心血管疾病的治疗药物。