申请人:Sankyo Company Limited
公开号:US05021413A1
公开(公告)日:1991-06-04
Analgesic compounds are of the general formula (I): ##STR1## in which, R.sup.1 and R.sup.2 each represents hydrogen or C.sub.1 -C.sub.6 alkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocycle; E represents methylene, sulfur, oxygen or imino group optionally substituted with C.sub.1 -C.sub.6 alkyl or aralkyl; ring A is aryl or heteroaryl ring, optionally substituted; R.sup.3 is hydrogen or C.sub.1 -C.sub.6 alkyl and R.sup.4 is hydrogen or R.sup.3 and R.sup.4 together represent a group of formula (IV): --(CR.sup.a R.sup.a).sub.m --C(.dbd.Y)-- (IV) (wherein R.sup.a and R.sup.a is C.sub.1 -C.sub.6 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 R.sup.3 is a C.sub.1 -C.sub.6 alkyl group or R.sup.3 and R.sup.4 together represent a group of the formula (IV).
镇痛化合物的一般式为(I):##STR1## 在其中,R.sup.1和R.sup.2分别代表氢或C.sub.1-C.sub.6烷基,或者R.sup.1和R.sup.2与它们连接的氮原子一起形成杂环;E代表亚甲基、硫、氧或亚胺基,可选择地用C.sub.1-C.sub.6烷基或芳基取代;环A是芳基或杂芳基环,可选择地取代;R.sup.3是氢或C.sub.1-C.sub.6烷基,R.sup.4是氢或R.sup.3和R.sup.4一起代表式(IV)的基团:--(CR.sup.aR.sup.a).sub.m--C(.dbd.Y)--(IV)(其中R.sup.a和R.sup.a是C.sub.1-C.sub.6烷基或氢,最多有3个烷基基团,m为1、2或3,Y为两个氢或氧);但是当E代表亚甲基时,R.sup.3是C.sub.1-C.sub.6烷基基团或R.sup.3和R.sup.4一起代表式(IV)的基团。