公开(公告)号：US3808190A

公开(公告)日：1974-04-30

申请号：US14463971

申请日：1971-05-18

Applicant: STAMICARBON

Inventor： DAHLMANS J ,  DASSEN B ,  BOESTEN W

IPC: A23L27/30 ,  C07K5/075 ,  A23L1/26 ,  C07C103/52

CPC classification number: C07K5/0613 ,  A23L27/32 ,  Y10S530/801

Abstract: A PROCESS FOR PREPARING ASPARTIC AMINO ACID ESTERS IS DISCLOSED WHEREIN N-CARBOBENZOXY ASPARTIC ACID ANHYDRIDE, AN AMINO ACID ESTER SALT AND A BASE ARE REACTED TOGETHER PRODUCING N-CARBOBENZOXY ASPARTIC AMINO ACID ESTER. THE N-CARBOBENZOXY ASPARTIC AMINO ACID ESTER IS THEN HYDROGENATED IN THE PRESENCE OF A PALLADIUM CATALYST TO SPLIT THE N-CARBOBENZOXY GROUP FROM THE ASPARTIC AMINO ACID ESTER. THE ASPARTIC AMINO ACID ESTERS HAVE SWEETENING PROPERTIES AND CAN BE USED AS A SWEETENING AGENT. ALPHA AND BETA ASPARTIC AMINO ACIDS CAN BE PRODUCED.

公开(公告)号：US3740386A

公开(公告)日：1973-06-19

申请号：US3740386D

申请日：1971-02-18

Applicant: STAMICARBON

Inventor： DAHLMANS J ,  BOESTEN W

IPC: C07K1/02 ,  C07K1/08 ,  C07C103/52

CPC classification number: C07K1/02 ,  C07K1/086

Abstract: THE INVENTION PROVIDES A PROCESS FOR PREPARING PEPTIDES BY REACTING A COMPOUND CONTAINING AN AMINO GROUP HAVING AT LEAST ONE REPLACEABLE HYDROGEN ATOM WITH 2-THIONOXAZOLIDONE-5 COMPOUND DERIVED FROM AN A-AMINOCARBOXYLIC ACID.