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:
Dec. 27, 1977
Filed:
May. 11, 1976
Applicant:
Inventors:
Francesco Cecere, Monterotondo, IT;
Giuliano Galli, Monterotondo, IT;
Gino Della Penna, Monterotondo, IT;
Bruno Rappuoli, Rome, IT;
Assignee:
Snamprogetti, S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12D / ;
U.S. Cl.
CPC ...
195-2 ; 195 29 ;
Abstract
An enzymatic hydrolysis method is disclosed for the preparation of D-carbamyl aminoacids and the corresponding D-aminoacids. The method is based on the use of certain substituted hydantoins as the starting materials and these are hydrolized, in a temperature range from 10.degree. C to 70.degree. C, with hydropyrimidine hydrolase from calf livers. The pH range is from 8 to 9. The method in question is cheaper and more reliable than those of the prior art.