Selective transformations of penicillins and cephalosporins with pen G acylase
β Scribed by Claudio Fuganti; Romina Rigoni; Stefano Servi
- Publisher
- Springer Netherlands
- Year
- 1994
- Tongue
- English
- Weight
- 219 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0141-5492
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β¦ Synopsis
Immobilised Penicillin G acylase from E. coli hydrolyses penicillin and cephalosporin derivatives protected at the carboxy group as the phenylacetoxymethylene esters. The corresponding hydrolysis of penicillin V retains the phenoxyacetyl moiety. Kinetic data of the hydrolysis are reported.
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The capacity factors of several penicillins and cephalosporins, as well as those of 7-aminocephalosporanic acid, 6-aminopenicillanic acid, and 7-aminodeacetoxycephalosporanic acid, were determined at pH 2.5-7.5 with different methanol concentrations in the mobile phase. The influence of ionic streng
A new chemoenzymatic synthesis of Cefazolin through the correct assembly of three bioU'ansformations catalysed by D-aminoacid oxidase, glutaryl acylase and penicillin G acylase is described. This multienzymatic synthesis has been performed from the natural Cephalosporin C in fully aqueous medium wit
## Abstract Two convenient procedures for the oxidation of penicillin G into penicillin G 1β(__s__)βoxide have been developed. Both the mild oxidation with enzymatically generated peroxyoctanoic acid and the attractive and simple oxidation with the sole use of hydrogen peroxide are valuable alterna