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    • 4. 再颁专利
    • Cyclopentanone derivatives
    • 环戊酮衍生物
    • USRE29587E
    • 1978-03-21
    • US704846
    • 1976-07-13
    • Jacques MartelEdmond ToromanoffJean Buendia
    • Jacques MartelEdmond ToromanoffJean Buendia
    • C07C405/00
    • C07C405/00
    • Novel prostanoic acid derivatives of the formula ##STR1## wherein R is selected from the group consisting of hydrogen and alkyl of 1 to 7 carbon atoms, R.sub.1 is selected from the group consisting of hydrogen and carbalkoxy of 1 to 7 alkyl carbon atoms, R.sub.2 is selected from the group consisting of hydrogen, carboxy and carbalkoxy of 1 to 7 alkyl carbon atoms, R.sub.3 is selected from the group consisting of hydrogen and .alpha.-tetrahydropyranyl .Iadd.and at least one of R.sub.1, R.sub.2 and R.sub.3 is other than hydrogen.Iaddend., m is 3, 4 or 5 and n is 2, 3 or 4 with the proviso that when R.sub.1 is carbalkoxy, R is alkyl of 1 to 7 carbon atoms, R.sub.2 is hydrogen and R.sub.3 is .alpha.-tetrahydropyranyl; when R.sub.2 is carbalkoxy, R is alkyl of 1 to 7 carbon atoms, R.sub.1 is hydrogen and R.sub.3 is .alpha.-tetrahydropyranyl and when R.sub.2 is carboxy, R and R.sub.1 are hydrogen and R.sub.3 is .alpha.-tetrahydropyranyl, which possess the physiological activity of prostaglandins .[. , and salts thereof when R, R.sub.1, R.sub.2 and R.sub.3 are hydrogen, with non-toxic, pharmaceutically acceptable bases.]. and their preparation.