申请人:Chinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
公开号:US04788217A1
公开(公告)日:1988-11-29
The invention relates to new compounds of the Formula I ##STR1## wherein R.sup.2 stands for hydrogen or C.sub.1-4 alkyl; and R.sup.3 represents C.sub.1-4 alkyl or a group of the Formula R.sup.4 --(CH.sub.2).sub.n -- wherein n is 1 or 2; R.sup.4 represents C.sub.1 to C.sub.4 alkoxy-carbonyl or a group of the Formula II ##STR2## and R.sup.6 and R.sup.7 stand for hydrogen or C.sub.1-4 alkoxy; or R.sup.2 and R.sup.3 together may form a group of the Formula --(CH.sub.2).sub.2 --O--CH.sub.2).sub.2 -- with the proviso that R.sup.2 and R.sup.3 do not both stand for methyl, and salts thereof and a process for the preparation of the same.
本发明涉及新型化合物,其化学式为I:其中R2代表氢或C1-4烷基;R3代表C1-4烷基或R4代表的基团--(CH2)n--,其中n为1或2;R4代表C1至C4烷氧基羰基或化学式II的基团:,R6和R7代表氢或C1-4烷氧基;或者R2和R3一起可以形成一个化学式为--(CH2)2--O--CH2)2--的基团,但R2和R3不能同时代表甲基,以及其盐和制备方法。