Back to results
US 4,788,299 AGranted
Ketolactones
AssigneeMerck Patent GmbH
InventorBernhard Riefling
Life of this patent
Estimating the term…
Abstract
New ketolactones of the formula I ##STR1## wherein R.sup.1 is H, alkyl having 1-6 C atoms or aryl having 6-14 C atoms and R.sup.2 and R.sup.3 together are an O atom or together are a bond, and salts thereof, can be used as intermediate products in the preparation of prostaglandin derivatives.
Claims7
A ketolactone of the formula ##STR4## wherein R.sup.1 is H, C.sub.1-6 -alkyl or C.sub.6-14 -aryl or C.sub.5-14 -aryl substituted by methyl, fluoro, chloro, methoxy, acetamido or benzamido and
- R.sup.2 and R.sup.3 together are an O atom or a single bond, or a salt thereof.
Dependencies are inferred from the claim text.