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:
May. 11, 1993
Filed:
Aug. 27, 1991
Applicant:
Inventors:
Yoshiro Kobayashi, Tokyo, JP;
Katsuhiko Iseki, Tsukuba, JP;
Tadabumi Nagai, Tsukuba, JP;
Yoko Tanaka, Delmar, NY (US);
Nobuo Ikekawa, Musashino, JP;
Assignee:
Daikin Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07J / ;
U.S. Cl.
CPC ...
552653 ;
Abstract
Vitamin D.sub.3 analogues of the formula: ##STR1## wherein R.sup.1 is hydrogen atom and R.sup.2 is hydroxy, or R.sup.1 is hydroxy and R.sup.2 is hydrogen atom, X is hydrogen atom, hydroxy or a hydroxy protected by a hydroxy-protecting group, and R.sup.3 is hydrogen atom or a hydroxy-protecting group, which have vitamin D.sub.3 -like activities such as activity of controlling calcium metabolism and tumor cell differentiation-inducing activity.