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. 14, 1978
Filed:
Jun. 22, 1976
Applicant:
Inventors:
Andrew David Batcho, North Caldwell, NJ (US);
Urs Oskar Hengartner, Roseland, NJ (US);
Willy Leimgruber, Upper Montclair, NJ (US);
John William Scott, Upper Montclair, NJ (US);
Donald Valentine, Jr, Highland Park, NJ (US);
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603 / ; 2603191 ; 2603 / ; 2603 / ; 2603264 ; 2603268 ; 2604045 ; 2604 / ; 2605 / ; 260599 ; 426548 ; 560 21 ; 560 22 ;
Abstract
The preparation of racemic and optically pure tryptophans is described. The D-enantiomers of the 6-substituted compounds possess a potent sweetening capability. Novel intermediates are also disclosed.