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:
Apr. 07, 1981
Filed:
May. 21, 1979
Applicant:
Inventors:
Hector F DeLuca, Madison, WI (US);
Heinrich K Schnoes, Madison, WI (US);
Herbert E Paaren, Verona, WI (US);
David E Hamer, Madison, WI (US);
Assignee:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J / ;
U.S. Cl.
CPC ...
2603972 ; 2603971 ;
Abstract
An improved method for the preparation of 1.alpha.-hydroxylated vitamin D compounds involving directly introducing an oxygen function at carbon 1 of the vitamin D molecule or precursors or derivatives thereof, wherein the 1.alpha.-hydroxycyclovitamin D intermediate is solvolyzed directly, without first converting the 1-hydroxy group to a 1-O-acyl function as a protective measure.