logo

For the Inventor, By the Inventor

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.:

US 4138394 B1

PDFFull Text
Date of Patent:
Feb. 06, 1979

Filed:

Jan. 21, 1977

Peptide derivatives and a method of measuring collagenase activity

Applicant:
Inventors:

Shumpei Sakakibara, Suita, JP;

Yutaka Nagai, Tokyo, JP;

Kenji Fujiwara, Tokyo, JP;

Takahiro Sakai, Tokyo, JP;

Assignee:

Ajinomoto Co., Inc., Tokyo, JP;

Attorneys:

Spath; Thomas E.

Boustead; John

Primary Examiner:

Delbert R Phillips

Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2601 / ; 1951 / ;
Abstract

Peptide derivatives are obtained by eliminating the masking groups from masked peptide derivatives in which the guanidino group of an arginine residue and the carboxyl group of the arginine residue are masked. The guanidino group can be masked, for example, with a tosyl, nitro or benzyloxycarbonyl group, and the carboxyl group can be masked by converting it to an ester group, for example, a benzyl or t-butyl ester group. The masking groups can be eliminated using hydrogen fluoride, for example.

Find Patent Forward Citations

Sakakibara, Shumpei. (1979). Peptide derivatives and a method of measuring collagenase activity (U.S. Patent No. 4138394). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4138394

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…