The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 1977
Filed:
Dec. 17, 1975
Ulrich Kerb, Berlin, DT;
Rudolf Wiechert, Berlin, DT;
Helmut Wachtel, Berlin, DT;
Otto Engelfried, Berlin, DT;
Klaus Kieslich, Berlin, DT;
Schering Aktiengesellschaft, Berlin and Bergkamen, DT;
Abstract
D-homo-20-ketopregnanes of the formula ##STR1## wherein R.sub.1 is hydrogen, fluorine, chlorine, bromine, alkyl, alkoxy, or azido; R.sub.2 is oxygen, ##STR2## and R.sub.7 is hydrogen, lower alkyl, or acyl of up to 5 carbon atoms; R.sub.3 is hydrogen or methyl R.sub.4 is oxygen, two hydrogens, ##STR3## R.sub.5 is hydrogen, hydroxy, alkoxy, azido, mercapto, thiocyano, cyano, dialkylamino, morpholino, thiomorpholino, or piperazino; R.sub.6 is methyl or ethyl; The hydrogen atom in the 5-position is of the .alpha.- or .beta.-configuration; And acid addition salts thereof, possess narcotic-anesthetic activity.