Patent ID: 7544667

Claim:
A compound according to formula I wherein P represents —N<, (X) n represents —OOC—, —COO—, —CONH—, —CH═N—, R a represents H, lower alkyl, —OR 3 , —O(CO)R 3 , —O(CO)OR 3 , —O(CO)NR 3 R 4 , —N 3 R 4 , —NR 3 (CO)R 4 , —COOR 3 , —CONR 3 R 4 , —CH═CHCOOR 3 , —CF 3 , —CN, —NO 2 , SO 3 H, PO 3 H or halogen, wherein R 3 and R 4 represent H or lower alkyl, R b represents H, OH, —OSO 2 Me, —OSO 2 W wherein W represents optionally substituted aryl or heteroaryl, —OCO(CHOH) 2 COOR 5 wherein R 5 represents H or lower alkyl; or represents the formula -Sp 3 —R 6 , wherein Sp 3 represents a covalent bond, —O—, —OCH 2 —, —OSO 2 CH 2 —, —OSO 2 —, —OSO 2 — (p) C 6 H 4 O— and R 6 represents one of carbohydrate structures A-D: wherein R 7 , R 8 , R 9 , R 11 , R 12 , R 13 and R 14 represent independently of each other H, lower alkyl, aryl(lower alkyl), —CO-lower alkyl, —CO-aryl, —SO 3 − or —PO 3 − , R 10 represents —CH 2 OR 16 or —COOR 17 , and R 15 represents —CH 2 OR 16 , —COOR 17 , —CH 2 NH 2 , —CH 2 OPO 3 − or —CH 2 OSO 3 − , wherein R 16 and R 17 independently of each other represent H, lower alkyl, aryl (lower alkyl), —CO-lower alkyl, —CO-aryl, —SO 3 − or —PO 3 − , Z represents optionally substituted aryl or heteroaryl, Sp 1 represents lower alkyl group —(CH 2 ) p —, wherein p is from 2-6, which is mono or poly-substituted by —OH, —OR 18 , halogen or cyano group, wherein one or more —CH 2 — groups may independently be replaced by —O—, —CO—, —CO—O—, —O—CO—, —NR 19 —, —NR 19 —CO—, —CO—NR 19 —, —CH═CH—, —C≡C— and wherein R 18 and R 19 represent a hydrogen atom or lower alkyl, Sp 2 represents a covalent bond or a lower alkyl group —(CH 2 ) q —, wherein q is from 1-6, which is unsubstituted, mono or poly-substituted by —OH, —OR 20 , halogen or cyano group, wherein one or more —CH 2 — groups may independently be replaced by —O—, —CO—, —CO—O—, —O—CO—, —NR 21 —, —NR 21 —CO—, —CO—NR 21 —, —CH═CH—, —C≡C— and wherein R 20 , and R 21 , represents a hydrogen atom or lower alkyl, Y represents optionally substituted aryl or heteroaryl.