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:
Mar. 05, 1985
Filed:
Aug. 18, 1983
Applicant:
Inventors:
Hector F DeLuca, Madison, WI (US);
Yoko Tanaka, Madison, WI (US);
Nobuo Ikekawa, Tokyo, JP;
Yoshiro Kobayashi, Tokyo, JP;
Assignee:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J / ;
U.S. Cl.
CPC ...
2603972 ;
Abstract
The invention provides a new derivative of vitamin D, 23,23-difluoro-1,25-dihydroxycholecalciferol. The compound is characterized by vitamin D-like activity as evidenced by its ability to increase intestinal calcium transport. It is further characterized by its resistance to hydroxylation at C-23, which is recognized as an essential metabolic step to the inactivation of vitamin D, and therefore should provide vitamin D-like activity of greater time duration.