Patent ID: 8592446

Claim:
A compound of formula (I): wherein R 1 is —S—R 3 ; R 7 is selected from —CH═N—OR 8 or —CHO; R 3 is selected from the group consisting of C 6 -C 15 aryl and heteroaryl, each of which is optionally substituted by C 1 -C 6 alkyl, C 6 -C 15 aryl, halogen, —(C═O)NR 5 R 6 , —(C═O)OR 5 , C 1 -C 6 alkoxy and/or —NR 5 R 6 , R 5 and R 6 being independently selected from hydrogen and C 1 -C 6 alkyl, R 8 is selected from hydrogen and C 1 -C 6 alkyl; or any salt or stereoisomer or tautomer thereof.