Process for preparing substituted N-ethyglycine derivatives

US5817811A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Gerhard Breipohl · Scheinfeld, DE
• Eugen Uhlmann · Königstein, DE
• David William Will · Schwalbach, DE

Key dates

• Filing date: Sep 3, 1996
• Grant date: Oct 6, 1998
• Expiry date: Sep 3, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/55
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

Processes are described for preparing substituted N-ethylglycine derivatives of the formula ##STR1## in which PG is an amino protecting group which is labile towards weak acids and is of the urethane type or the trityl type, X is NH or O, and B' represents bases which are customary in nucleotide chemistry and whose exocyclic amino and/or hydroxyl groups are protected by suitable known protecting groups, and the salts thereof.