申请人:Sankyo Company Limited
公开号:EP0356247A1
公开(公告)日:1990-02-28
Analgesic compounds are of the general formula (I):
in which, R¹ and R² each represents hydrogen or C₁-C₆ alkyl, or R¹ and R² together with the nitrogen atom to which they are attached form a heterocycle; E represents methylene, sulphur, oxygen or imino group optionally substituted with C₁-C₆ alkyl or aralkyl; ring A is aryl or heteroaryl ring, optionally substituted; R³ is hydrogen or C₁-C₆ alkyl and R⁴ is hydrogen or R³ and R⁴ together represent a group of formula (IV):
-(CRaRa)m-C(=Y)- (IV)
(wherein Ra and Ra is C₁-C₆ alkyl or hydrogen, up to a maximum of 3 alkyl groups, m is 1, 2, or 3, and Y is two hydrogens or oxygen); provided that when E represents a methylene group, then R³ is a C₁-C₆ alkyl group or R³ and R⁴ together represent a group of the formula (IV).
镇痛化合物的通式为(I):
其中,R¹ 和 R² 各自代表氢或 C₁-C₆烷基,或 R¹ 和 R² 与它们所连接的氮原子一起形成杂环;E 代表亚甲基、硫、氧或亚氨基,可选择被 C₁-C₆ 烷基或芳烷基取代;环 A 是任选被取代的芳基或杂芳基环;R³ 是氢或 C₁-C₆ 烷基,R⁴ 是氢或 R³ 和 R⁴ 共同代表式 (IV) 的基团:
-(CRaRa)m-C(=Y)-(IV)
(其中 Ra 和 Ra 是 C₁-C₆ 烷基或氢,最多 3 个烷基,m 是 1、2 或 3,Y 是两个氢或氧);条件是当 E 代表亚甲基时,R³ 是 C₁-C₆ 烷基或 R³ 和 R⁴ 共同代表式(IV)的基团。