| abstract |
The present invention provides the sulfonyl hydroxamic acid compounds of general formulae (I) useful as HDAC inhibitors and process for preparation of these indole based sulfonyl hydroxamic acid derivatives. wherein ring A and B is aryl or heteroaryl or cycloalkyl or fused aryl or fused alkyl group; R1, R2, R3, R4, R5, R6 is hydrogen, alkoxy, aryloxy, hydroxy, ester, amide, amino, alkyl, aryl, heteroaryl, halogen, hydroxy, alkoxy, aryloxy, nitro, cyano, ester, aldehyde. |