Patent ID: 8865910

Claim:
Compounds of General Formula I, wherein, X is sulfur (S) or a sulphone ‘n’ is 1, ‘m’ is 1; R1 is an aryl group optionally substituted with —OCH 3 , halogen, or nitro; R2 and R3 are selected from the group consisting of hydrogen, and C 1 -C 6 alkyl optionally substituted with heterocyclic ring of 5 to 6 ring atoms containing one to three hetero atoms selected from oxygen, sulfur, nitrogen, which may be substituted with alkyl, arylalkyl, linear or branched alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, or allyl or propargyl groups consisting of 1 to 6carbon atoms; and Z is C 1 -C 6 alkyl optionally substituted with heterocyclic ring of 5 ring atoms, containing one to three hetero atoms selected from oxygen, sulfur, nitrogen, which may be substituted with arylalkyl, linear or branched alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, allyl or propargyl groups consisting of 1 to 6 carbon atoms.