Antifungal compounds of Formula selected from compound 1A, 1B, 1C, 1D and 1E and pharmaceutically acceptable salts thereof; wherein, X and Y may be same or different, and each represents hydrogen or halogen selected from fluorine, chlorine and bromine; Z is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted acyl or substituted or unsubstituted aryl; R 1, R 2, R 3 and R 4 may be same or different, and each represents hydrogen or functional groups selected from alkyl group of linear or branched chain of 1 to 20 carbon atoms optionally substituted with aryl group, alkoxy (-OR) group having 1 to 4 carbon atoms, hydroxyl group, halogen selected from fluorine, chlorine, bromine and iodine, or nitro group; a) the compound of formula 1A is a compound of formula 1, wherein either A 1 is-C=O and B 1 is -CH=CH-;or A 1 is -CH=CH- and B 1 is -C=O; b) the compound of Formula 1B is a compound of formula 1 wherein either, A 1 is-C=O andB 1 is substituted or unsubstituted alkyl or epoxy ring; or A 1 is substituted or unsubstituted alkyl or epoxy ring and B 1 is -C=O; c) the compound of Formula 1C is a compound of formula 1 and wherein either, A 1 is -CH=CH- andn B 1 is -CH(OR 5), -C=N-OR 6, -C=N-R 7 or -C(X'R 8)Y'R 9; or A 1 is-CH(OR 5), -C=N-OR 6, -C=N-R 7 or -C(X'R 8)Y'R 9 andB 1 is -CH=CH-, wherein R 5 is H, alkyl, acyl or aryl, - R 6 is H or alkyl, R 7 is alkyl or aryl, X' and Y' may be same or different and each represents -O or -S, and (a) R 8 and R 9 represents alkyl or aryl or (b) R 8 and R 9 are linked with each other to form a heterocyclic five to eight-membered ring; d) the compound of formula 1D is a compound of formula 1 wherein A 1 - B 1 is a 3,5-disubstituted (1 H)-pyrazole; or e) the compound of formula 1E, is a compound of formula 1 wherein A 1 - B 1 is a 3,5-disubstituted 4,5-dihydro(1 H)-pyrazole. C 1 represents hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted thienyl, substituted or unsubstituted naphthyl, substituted or unsubstituted anthracenyl, substituted or unsubstituted indolyl, substituted or unsubstituted cycloalkyl or substituted or unsubstituted alkyl. '*' is used to designate R or S configuration at carbon atom or racemic nature of the compound. X and Y may be same or different, and each represents hydrogen or halogen selected from fluorine, chlorine and bromine; Z is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted acyl or substituted or unsubstituted aryl; R 1, R 2, R 3 and R 4 may be same or different, and each represents hydrogen or functional groups selected from alkyl group of linear or branched chain of 1 to 20 carbon atoms optionally substituted with aryl group, alkoxy (-OR) group having 1 to 4 carbon atoms, hydroxyl group, halogen selected from fluorine, chlorine, bromine and iodine, or nitro group; a) the compound of formula 1A is a compound of formula 1, wherein either A 1 is-C=O and B 1 is -CH=CH-;or A 1 is -CH=CH- and B 1 is -C=O; b) the compound of Formula 1B is a compound of formula 1 wherein either, A 1 is-C=O andB 1 is substituted or unsubstituted alkyl or epoxy ring; or A 1 is substituted or unsubstituted alkyl or epoxy ring and B 1 is -C=O; c) the compound of Formula 1C is a compound of formula 1 and wherein either, A 1 is -CH=CH- andn B 1 is -CH(OR 5), -C=N-OR 6, -C=N-R 7 or -C(X'R 8)Y'R 9; or A 1 is-CH(OR 5), -C=N-OR 6, -C=N-R 7 or -C(X'R 8)Y'R 9 andB 1 is -CH=CH-, wherein R 5 is H, alkyl, acyl or aryl, - R 6 is H or alkyl, R 7 is alkyl or aryl, X' and Y' may be same or different and each represents -O or -S, and (a) R 8 and R 9 represents alkyl or aryl or (b) R 8 and R 9 are linked with each other to form a heterocyclic five to eight-membered ring; d) the compound of formula 1D is a compound of formula 1 wherein A 1 - B 1 is a 3,5-disubstituted (1 H)-pyrazole; or e) the compound of formula 1E, is a compound of formula 1 wherein A 1 - B 1 is a 3,5-disubstituted 4,5-dihydro(1 H)-pyrazole. a) the compound of formula 1A is a compound of formula 1, wherein either A 1 is-C=O and B 1 is -CH=CH-;or A 1 is -CH=CH- and B 1 is -C=O; b) the compound of Formula 1B is a compound of formula 1 wherein either, A 1 is-C=O andB 1 is substituted or unsubstituted alkyl or epoxy ring; or A 1 is substituted or unsubstituted alkyl or epoxy ring and B 1 is -C=O; c) the compound of Formula 1C is a compound of formula 1 and wherein either, A 1 is -CH=CH- andn B 1 is -CH(OR 5), -C=N-OR 6, -C=N-R 7 or -C(X'R 8)Y'R 9; or A 1 is-CH(OR 5), -C=N-OR 6, -C=N-R 7 or -C(X'R 8)Y'R 9 andB 1 is -CH=CH-, wherein R 5 is H, alkyl, acyl or aryl, - R 6 is H or alkyl, R 7 is alkyl or aryl, X' and Y' may be same or different and each represents -O or -S, and (a) R 8 and R 9 represents alkyl or aryl or (b) R 8 and R 9 are linked with each other to form a heterocyclic five to eight-membered ring; d) the compound of formula 1D is a compound of formula 1 wherein A 1 - B 1 is a 3,5-disubstituted (1 H)-pyrazole; or e) the compound of formula 1E, is a compound of formula 1 wherein A 1 - B 1 is a 3,5-disubstituted 4,5-dihydro(1 H)-pyrazole. C 1 represents hydrogen, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted thienyl, substituted or unsubstituted naphthyl, substituted or unsubstituted anthracenyl, substituted or unsubstituted indolyl, substituted or unsubstituted cycloalkyl or substituted or unsubstituted alkyl. '*' is used to designate R or S configuration at carbon atom or racemic nature of the compound.