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. 08, 1990
Filed:
Apr. 24, 1986
Applicant:
Inventors:
Yukihiko Kameda, Kanazawa, JP;
Satoshi Horii, Sakai, JP;
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H / ; C07C / ;
U.S. Cl.
CPC ...
536 179 ; 536 172 ; 536 187 ; 564462 ;
Abstract
A novel valiolamine derivative of the formula (I): ##STR1## where R stands for hydrogen or .beta.-D-glucopyranosyl group is useful for a starting material of valiolamine which can be converted to more potent .alpha.-glucosidase inhibiting compounds. The valiolamine derivative is obtained by cultivating Streptomyces hygroscopics in a culture medium and recovering the valiolamine derivative produced and accumulated from the culture broth.