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:
Feb. 05, 1991
Filed:
Jun. 30, 1987
Applicant:
Inventors:
Tomoya Ogawa, Musashino, JP;
Mamoru Sugimoto, Niiza, JP;
Masaaki Numata, Kawagoe, JP;
Shoji Yoshimura, Iruma, JP;
Masayoshi Ito, Kunitachi, JP;
Yoshiyasu Shitori, Tokyo, JP;
Assignee:
Mect Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07G / ; C08B / ; C07H / ;
U.S. Cl.
CPC ...
536 174 ; 536-41 ; 536 172 ; 536 185 ; 536 187 ; 536 22 ; 536 552 ; 536 553 ; 536115 ; 536119 ; 536120 ;
Abstract
The present invention relates to sialic acid derivatives. According to the present invention, there is provided sialic acid derivatives having the general formula (I): ##STR1## wherein, R.sup.1 represents hydrogen, an acetyl group, a trityl group, ##STR2## (R.sup.5 represents hydrogen or an acetyl group and R.sup.6 represents hydrogen, sodium or a methyl group). R.sup.2 represents hydrogen or an acetyl group,