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:
Dec. 25, 1984
Filed:
Jan. 31, 1983
Derek H Barton, Gif-Sur-Yvette, FR;
William B Motherwell, Gif-Sur-Yvette, FR;
Samir Z Zard, Gif-Sur-Yvette, FR;
Roussel Uclaf, Paris, FR;
Abstract
A novel nitromethylation composition comprising nitromethane and a catalytic amount of a bifunctional basic catalyst, optionally in an organic solvent, a method of nitromethylating ketonic compounds with said compositions and novel steroids of the formulae ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms optionally substituted with an oxygen or nitrogen group or halogen and alkenyl and alkynyl of 2 to 4 carbon atoms, R.sub.2 is alkyl of 1 to 4 carbon atoms and the A,B,C and D rings optionally contain at least one double bond and optionally substituted with at least one member of the group consisting of --OH, .dbd.0, halogen, alkyl and alkoxy of 1 to 4 carbon atoms and alkenyl and alkynyl of 2 to 4 carbon atoms and their use to form the corresponding 21-acetoxy-20-ketocorticosteroids compounds in a simple manner.