Patent ID: 8044211

Claim:
A compound of formula (I): wherein: G is —N═ or —CH═ D is an optionally substituted mono- or bi-cyclic aryl or heteroaryl radical having 5-13 ring members; R 6 is hydrogen or optionally substituted C 1 -C 3 alkyl; P represents hydrogen and U represents a radical of formula (IA); or U represents hydrogen and P represents a radical of formula (IA); -A-(CH 2 ) z —X 1 -L 1 -Y—NH—CHR 1 R 2 (IA) wherein A represents an optionally substituted divalent mono- or bicyclic carbocyclic or heterocyclic radical having 5-13 ring members; z is 0 or 1; Y is a bond, —C(═O)—, —S(═O) 2 —, —C(═O)NR 3 —, —C(═S)—NR 3 , —C(═NH)NR 3 or —S(═O) 2 NR 3 — wherein R 3 is hydrogen or optionally substituted C 1 -C 6 alkyl; L 1 is a divalent radical of formula -(Alk 1 ) m (Q) n (Alk 2 ) p - wherein m, n and p are independently 0 or 1, Q is (i) an optionally substituted divalent mono- or bicyclic carbocyclic or heterocyclic radical having 5-13 ring members, or (ii), in the case where both m and p are 0, a divalent radical of formula —X 2 -Q 1 - or -Q 1 -X 2 — wherein X 2 is —O—, S— or NR A — wherein R A is hydrogen or optionally substituted C 1 -C 3 alkyl, and Q 1 is an optionally substituted divalent mono- or bicyclic carbocyclic or heterocyclic radical having 5-13 ring members, Alk 1 and Alk 2 independently represent optionally substituted divalent C 3 -C 7 cycloalkyl radicals, or optionally substituted straight or branched, C 1 -C 6 alkylene, C 2 -C 6 alkenylene, or C 2 -C 6 alkynylene radicals which may optionally contain or terminate in an ether (—O—), thioether (—S—) or amino (—NR A —) link wherein R A is hydrogen or optionally substituted C 1 -C 3 alkyl; and X 1 represents a bond; —C(═O); or —S(═O) 2 —; —NR 4 C(═O)—, —C(═O)NR 4 —, —NR 4 C(═O)NR 5 —, —NR 4 S(═O) 2 —, or —S(═O) 2 NR 4 — wherein R 4 and R 5 are independently hydrogen or optionally substituted C 1 -C 6 alkyl; R 1 is a carboxylic acid group (—COOH), or an ester group which is hydrolysable by one or more intracellular esterase enzymes to a carboxylic acid group; and R 2 is the side chain of a natural or non-natural alpha amino acid.