4H-THIENO[2,3-D][1,3]OXAZIN-4-ONE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

Herpesvirus protease inhibitor 4H-thieno (2,3-d)(1,3) oxazin-4-one derivatives of formula (I) which are 2-substituted by X(Y)NH-CHR1 - wherein X is hydrogen or a blocking group, Y is an optionally present amino acid, and R1 is hydrogen or an amino acid side chain.