The present invention provides a compound of general formulae I useful as GSK3β inhibitors and their anticancer potential and process for preparation of these spirooxindoles. wherein Z is hydrogen, halogen, hydroxy, alkoxy, cyano, nitro; Ring A is a five membered or six membered or seven membered optionally containing additional hetero atom in the ring X is optionally CH2 Ring B is triazole or cyclic amine alone or with one or more hetero atoms part of the ring and optionally substituted with one or more substituents Y is hydrogen, alkoxy, aryloxy, hydroxy, ester, amide, amino, alkyl or aryl, heteroaryl, wherein these substituents are optionally substituted with one or more halogen, hydroxy, alkoxy, alkyl, aryl, heteroaryl, aryloxy, nitro, cyano, ester, aldehyde, wherein these substituents are further substituted with one or more halogen, hydroxy, alkoxy, alkyl, aryl, heteroaryl, aryloxy, nitro, cyano, ester, aldehyde.