申请人:Beecham Group Limited
公开号:US04241074A1
公开(公告)日:1980-12-23
A compound of the formula (I): ##STR1## wherein: X is O, S or H; Y is --CH.sub.2 --CH--, --CH.dbd.CH-- or --C.dbd.C--; n is 1 to 7; R.sub.1 is C.sub.1-4 alkyl; R.sub.3 is hydroxy or protected hydroxy; R.sub.4 is C.sub.1-9 alkyl, C.sub.3-8 cycloalkyl or C.sub.3-8 cycloalkyl--C.sub.1-6 alkyl; or R.sub.2 and R.sub.4 taken with the carbon atom to which they are joined represent a C.sub.5-8 cycloalkyl group; and R.sub.5 is hydrogen or C.sub.1-6 alkyl; and salts thereof has useful pharmaceutical activity including bronchodilator activity.
化合物的化学式(I):##STR1##其中:X为O、S或H;Y为--CH.sub.2 --CH--、--CH.dbd.CH--或--C.dbd.C--;n为1至7;R.sub.1为C.sub.1-4烷基;R.sub.3为羟基或保护羟基;R.sub.4为C.sub.1-9烷基、C.sub.3-8环烷基或C.sub.3-8环烷基--C.sub.1-6烷基;或R.sub.2和R.sub.4与它们连接的碳原子一起代表一个C.sub.5-8环烷基基团;R.sub.5为氢或C.sub.1-6烷基;以及其盐具有有用的药用活性,包括支气管扩张剂活性。