申请人:Beecham Group Limited
公开号:US04152445A1
公开(公告)日:1979-05-01
A compound of formula (I) ##STR1## wherein: X is O or S; n is 1 to 8; R.sub.1 is hydrogen, or CO.sub.2 R.sub.1 represents an ester group in which the R.sub.1 moiety contains from 1-12 carbon atoms; R.sub.2 is hydrogen, C.sub.1-4 alkyl, or phenyl; R.sub.3 is hydroxy or protected hydroxy; R.sub.4 is hydrogen, C.sub.1-9 alkyl, C.sub.3-8 cycloalkyl, C.sub.3-8 cycloalkyl-C.sub.1-6 alkyl, phenyl, phenyl C.sub.1-6 alkyl, naphthyl, naphthyl-C.sub.1-6 -alkyl, any of which phenyl or naphthyl moieties may be substituted by one or more halogen, trifluoromethyl, C.sub.1-6 alkyl, hydroxy, C.sub.1-6 alkoxy, phenyl C.sub.1-6 alkoxy or nitro groups; 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 salts thereof; has useful pharmacological activity.
化合物的化学式(I)##STR1##其中:X为O或S;n为1至8;R.sub.1为氢,或CO.sub.2 R.sub.1代表一个酯基,其中R.sub.1基团含有1-12个碳原子;R.sub.2为氢,C.sub.1-4烷基或苯基;R.sub.3为羟基或受保护的羟基;R.sub.4为氢,C.sub.1-9烷基,C.sub.3-8环烷基,C.sub.3-8环烷基-C.sub.1-6烷基,苯基,苯基-C.sub.1-6烷基,萘基,萘基-C.sub.1-6-烷基,其中苯基或萘基可能被一个或多个卤素,三氟甲基,C.sub.1-6烷基,羟基,C.sub.1-6烷氧基,苯基C.sub.1-6烷氧基或硝基取代;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;及其盐;具有有用的药理活性。