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:
Oct. 06, 1998
Filed:
Oct. 09, 1996
Applicant:
Inventors:
Steven K White, San Diego, CA (US);
Chan Kou Hwang, San Diego, CA (US);
David T Winn, San Diego, CA (US);
Assignee:
Ligand Pharmaceuticals, Inc., San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
554154 ; 554124 ; 554220 ; 554221 ; 554223 ; 554224 ; 554225 ; 554226 ;
Abstract
Methods for stereospecific synthesis of 9-cis olefins and retinoids. In one particular aspect, a cis olefin is generated via a lactol ring opening with complete retention of double bond configuration.