Synthese von Carbobenzoxy‐dipeptid‐p‐nitrophenylestern. Über aktivierte Ester IX
- 1 January 1960
- journal article
- research article
- Published by Wiley in Helvetica Chimica Acta
- Vol. 43 (6) , 1760-1766
- https://doi.org/10.1002/hlca.19600430639
Abstract
A study of the preparation of carbobenzoxy‐dipeptide p‐nitrophenyl esters revealed that partial racemization may occur depending on the structure of the dipeptide derivative used. Whereas carbobenzoxy‐S‐benzyl‐L‐cysteinyl‐L‐tyrosine yielded an optically pure ester employing the sulfite method, the synthesis of the ester of carbobenzoxy‐L‐tyrosine by various methods proceeded with partial racemization. The optically pure carbobenzoxy‐L‐seryl‐L‐tyrosine p‐nitrophenyl ester was obtained by condensation of carbobenzoxy‐L‐serine with p‐nitrophenyl L‐tyrosinate.This publication has 16 references indexed in Scilit:
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