Farmitalia Carlo Erba

Antibioticos

Stefano Cambiaghi

Franco Dallatomasina

Franco Francalanci

Pietro Cesti

Marco Foa'

Marcello Marchi

Pietro Giardino

Maria Altamura

Roberto Verga

Sergio Tomaselli

Enzo Murador

Gaspare Spreafico

Transformation of Cephalosporin C or its derivatives and salts into 7-aminocephalosporanic acid or its derivatives by an enzymatic two stage process with enzymes immobilized on a solid matrix.

Enzymatic process for preparing 7-aminocephalosporanic acid and

A process for preparing a compound of formula I: ##STR1## wherein R.sub.1 represents a hydroxy protecting group and R.sub.2 represents a carboxy protecting group, which comprises:

Process for preparing penems

The invention describes a process for preparing peptides. More particularly, a process for preparing L-.alpha.-aspartyl-L-phenylalanine C.sub.1 -C.sub.4 lower alkyl ester is described and claimed by enzymatic hydrolysis of a suitable N-acyl-derivative.

Process for preparing peptides

Growing community of inventors

Pavia, Italy

Stefano Cambiaghi