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:
Aug. 22, 1995
Filed:
Feb. 25, 1993
Applicant:
Inventors:
Keiichi Ajito, Kanagawa, JP;
Kenichi Kurihara, Kanagawa, JP;
Tsuneo Ishizuka, Kanagawa, JP;
Tetsuro Hara, Kanagawa, JP;
Takayuki Usui, Kanagawa, JP;
Seiji Shibahara, Kanagawa, JP;
Assignee:
Meiji Seika Kaisha, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H / ; C07D / ;
U.S. Cl.
CPC ...
536-71 ; 536 172 ; 536 168 ; 549270 ; 549271 ;
Abstract
16-membered macrolide compounds wherein both of hydroxyl groups at the 3'- and 4'-positions form ether bonds together with two alkyl groups which are either the same or different from each other is useful as an antibacterial agent. The macrolide compounds represented by formula (I) are prepared by chemically modifying midecamycin A.sub.3 to obtain a synthesis intermediate of the formula (II), which is further chemically modified. ##STR1##