Compounds of formula (I) ##STR1## wherein: n is 1 to 5 Y is --CH.sub.2 --CH.sub.2 or --CH.dbd.CH--; 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 moieties 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; R.sub.5 is hydrogen, C.sub.1-6 alkyl, C.sub.5-8 cycloalkyl, phenyl, phenyl-C.sub.1-6 alkyl or phenyl C.sub.3-6 cycloalkyl, any of which phenyl moieties may be substituted by one or more halogen, trifluoromethyl, C.sub.1-6 alkyl, 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 are useful for their prostaglandin-like activity.
化合物的式子(I) ##STR1## 其中:n为1到5;Y为--CH.sub.2 --CH.sub.2或--CH.dbd.CH--;R.sub.1为氢或CO.sub.2 R.sub.1代表一个酯基,在该酯基中,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为羟基或保护羟基;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,其中任何一个苯基基团或
萘基基团可以被一个或多个卤素,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烷氧基或硝基基团取代;R.sub.5为氢,C.sub.1-6烷基,C.sub.5-8环烷基,苯基,苯基-C.sub.1-6烷基或苯基-C.sub.3-6环烷基,其中任何一个苯基基团可以被一个或多个卤素,三
氟甲基,C.sub.1-6烷基,C.sub.1-6烷氧基或硝基基团取代;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;及其盐对于其类
前列腺素活性是有用的。