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US 5,164,526 AGranted
Pleuromutilins
AssigneeBiochemie Gesellschaft m.b.H.
InventorIngolf Macher
Life of this patent
Estimating the term…
Abstract
Compounds of formula I ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represent hydrogen, alkyl, alkenyl, cycloalkyl, aryl or aralkyl are produced by a new environmentally acceptable process.
Claims12
A process for the preparation of a compound of formula I ##STR14## wherein R.sub.1 and R.sub.2 are the same or different and each represent hydrogen, alkyl, alkenyl, cycloalkyl, aryl or aralkyl, which comprises the step of
- (i) deprotecting a compound of formula II ##STR15## wherein R.sub.1 and R.sub.2 are as defined above, and wherein
- R.sub.5 is alkyl,
- R.sub.6 is hydrogen or alkyl, and
- R.sub.7 is alkyl.
1 more element
A process according to any one of the preceeding claims wherein the compound of formula I is obtained in acid addition salt form.
Dependencies are inferred from the claim text.