Patent ID: 7241923

Claim:
A compound of formula I or a stereo isomer, optical isomer, or racemate thereof, or a pharmaceutically acceptable salt, prodrug, or solvate, thereof; wherein: A is situated in the ortho, meta or para position and represents wherein x is 1; R is —BR a ; B is O; R a represents hydrogen or alkyl, wherein the alkyl group is optionally substituted one or more times by R b ; wherein R b represents alkyl, aryl, alkylaryl, cyano, —NR c R c , ═O, halogen, —OH, —SH, —Oalkyl, —Oaryl, —Oalkylaryl, —COR c , —SR d , —SOR d , or —SO 2 R d ; wherein R c represents hydrogen, alkyl, aryl or alkylaryl; and wherein R d represents alkyl, aryl or alkylaryl; R 2 is —BR , wherein B and R a are as defined above; and R1, R3 and R4 are the same or different and each, independently, represents hydrogen or alkyl, wherein the alkyl group is optionally substituted by R b ; E represents a group of formula i or vii wherein D represents H, alkyl, acyl, aryl, alkylaryl, halogen, —CN and NO 2, wherein the alkyl, aryl, or alkylaryl group is optionally substituted by R b ; m is an integer 0 or 1; and D′ represents halogen; D″ represents hydrogen or alkyl; and L represents (CH 2 ) a Z 1 (CH 2 ) b Z 2 wherein a is 0, 1, 2 or 3; Z 1 is absent; b is 1, 2 or 3; and Z 2 is R t N—CO—NR t wherein is H, aryl, alkylcycloalkyl, alkylbiphenylyl wherein each alkyl chain may be substituted by one or more hydroxy or alkoxy.