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:
Aug. 25, 1987
Filed:
Oct. 16, 1985
Derek H Barton, Gif-sur-Yvette, FR;
Samir Z Zard, Gif-sur-Yvette, FR;
Jocelyne Wozniak, Gif-sur-Yvette, FR;
Roussel Uclaf, Paris, FR;
Abstract
Novel 23-dihydro-oxazolyl steroids of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen and methyl, R.sub.2 is selected from the group consisting of methyl and ethyl, R.sub.3 and R.sub.4 are individually selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, the A, B, C and D rings may contain 1 to 3 double bonds and may be optionally substituted with one or more members of the group consisting of --OH, protected hydroxyl, .dbd.0, protected keto, halogen alkyl or alkoxy of 1 to 4 carbon atoms and alkenyl and alkynyl of 2 to 4 carbon atoms and the dotted line indicates the optional presence of a second bond useful for the preparation of 20-keto-pregnanes and novel intermediates.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile