Abstract: Disclosed are compounds of formula I: 1

Abstract: Disclosed are compounds of formula I: or the pharmaceutically acceptable salts thereof wherein X is a carbonyl, sulfonyl, methylene, or methylene substituted with optionally substituted phenyl; Z is nitrogen or CH; Ar1 and Ar2 independently represent aryl groups; and Y is hydrogen; or Y and R1 or R2 together represent CH2; CH2CH2; CH20; CH2S forming a five or six membered ring and such ring may be optionally substituted with loweralkyl or phenyl; or pharmaceutically acceptable salts thereof, useful in the treatment of neoplastic diseases, and bacterial or fungal infections, and for preventing or decreaseing the production of abnormally phosphorylated paired helical filament (PHF) epitopes associated with Alzheimer's Disease and, therefore for treating Alzheimer's Disease.

Abstract: Disclosed are compounds of formula I: wherein X is selected from oxygen, sulfur and NR; wherein R is selected from hydrogen, loweralkyl and CH2CH2COAr1; and Z is hydrogen; straight or branched chain alkyl having 1-6 carbon atoms; or Z and R1, R2 or R3 together represent CH2; CH2CH2; CH2O; or CH2S forming a five or six membered ring and such ring may be optionally substituted with loweralkyl or phenyl; R24 is hydrogen; loweralkyl, or optionally substituted phenyl; each R10 is selected from hydrogen and loweralkyl; and Ar1 represents an aryl group or optionally substituted phenyl, thienyl or optionally substituted thienyl; or the pharmaceutically acceptable salts thereof, useful for preventing or decreaseing the production of abnormally phosphorylated paired helical filament (PHF) epitopes associated with Alzheimer's Disease and, therefore, useful for treating Alzheimer's Disease.

Abstract: Disclosed are compounds of formula I: wherein X is a carbonyl, sulfonyl, methylene, or methylene substituted with optionally substituted phenyl; Z is nitrogen or CH; Ar1 and Ar2 independently represent aryl groups; and Y is hydrogen; or Y and R1 or R2 together represent CH2;CH2CH2; CH2O; CH2S forming a five or six membered ring and such ring may be optionally substituted with loweralkyl or phenyl; or the pharmaceutically acceptable salts thereof, useful in the treatment of neoplastic diseases, and bacterial or fungal infections, and in preventing or decreasing the production of abnormally phosphorylated paired helical filament (PHF) epitopes associated with Alzheimer's Disease and, therefore, useful for treating Alzheimer's Disease.

Abstract: Disclosed are compounds of formula I: or the pharmaceutically acceptable salts thereof whereinX is a carbonyl, sulfonyl, methylene, or methylene substituted with optionally substituted phenyl;Z is nitrogen or CH;Ar.sub.1 and Ar.sub.2 independently represent aryl groups; andY is hydrogen; orY and R.sub.1 or R.sub.2 together represent CH.sub.2 ;CH.sub.2 CH.sub.2 ; CH.sub.2 O; CH.sub.2 S forming a five or six membered ring and such ring may be optionally substituted with loweralkyl or phenyl; or pharmaceutically acceptable salts thereof, useful in the treatment of neoplastic diseases, and bacterial or fungal infections, and for preventing or decreasing the production of abnormally phosphorylated paired helical filament (PHF) epitopes associated with Alzheimer's Disease and, therefore for treating Alzheimer's Disease.

Abstract: Disclosed are compounds of formula I: ##STR1## wherein X is selected from oxygen, sulfur and NR; whereinR is selected from hydrogen, loweralkyl and CH.sub.2 CH.sub.2 COAr.sub.1 ; andZ is hydrogen; straight or branched chain alkyl having 1-6 carbon atoms; or Z and R.sub.1, R.sub.2 or R.sub.3 together represent CH.sub.2 ; CH.sub.2 CH.sub.2 ; CH.sub.2 0; or CH.sub.2 S forming a five or six membered ring and such ring may be optionally substituted with loweralkyl or phenyl;R.sub.24 is hydrogen; loweralkyl, or optionally substituted phenyl;each R.sub.10 is selected from hydrogen and loweralkyl; andAr.sub.1 represents an aryl group or optionally substituted phenyl, thienyl or optionally substituted thienyl; or the pharmaceutically acceptable salts thereof, useful for preventing or decreaseing the production of abnormally phosphorylated paired helical filament (PHF) epitopes associated with Alzheimer's Disease and, therefore, useful for treating Alzheimer's Disease.

Abstract: Disclosed are compounds of formula I: ##STR1## wherein X is selected from oxygen, sulfur and NR; whereinR is selected from hydrogen, loweralkyl and CH.sub.2 CH.sub.2 COAr.sub.1 ; andZ is hydrogen; straight or branched chain alkyl having 1-6 carbon atoms; or Z and R.sub.1, R.sub.2 or R.sub.3 together represent CH.sub.2 ; CH.sub.2 CH.sub.2 ; CH.sub.2 0; or CH.sub.2 S forming a five or six membered ring and such ring may be optionally substituted with loweralkyl or phenyl;R.sub.24 is hydrogen; loweralkyl, or optionally substituted phenyl;each R.sub.10 is selected from hydrogen and loweralkyl; andAr.sub.1 represents an aryl group or optionally substituted phenyl, thienyl or optionally substituted thienyl; or the pharmaceutically acceptable salts thereof, useful for preventing or decreaseing the production of abnormally phosphorylated paired helical filament (PHF) epitopes associated with Alzheimer's Disease and, therefore, useful for treating Alzheimer's Disease.

Abstract: Disclosed are compounds of formula I: ##STR1## wherein X is a carbonyl, sulfonyl, methylene, or methylene substituted with optionally substituted phenyl;Z is nitrogen or CH;Ar.sub.1 and Ar.sub.2 independently represent aryl groups; andY is hydrogen; orY and R.sub.1 or R.sub.2 together represent CH.sub.2 ;CH.sub.2 CH.sub.2 ; CH.sub.2 O; CH.sub.2 S forming a five or six membered ring and such ring may be optionally substituted with loweralkyl or phenyl; or the pharmaceutically acceptable salts thereof, useful in the treatment of neoplastic diseases, and bacterial or fungal infections, and in preventing or decreasing the production of abnormally phosphorylated paired helical filament (PHF) epitopes associated with Alzheimer's Disease and, therefore, useful for treating Alzheimer's Disease.

Abstract: Disclosed are compounds of formula I: ##STR1## or the pharmaceutically acceptable salts thereof wherein X is a carbonyl, sulfonyl, methylene, or methylene substituted with optionally substituted phenyl;Z is nitrogen or CH;Ar.sub.1 and Ar.sub.2 independently represent aryl groups; andY is hydrogen; orY and R.sub.1 or R.sub.2 together represent CH.sub.2 ; CH.sub.2 CH.sub.2 ; CH.sub.2 O; CH.sub.2 S forming a five or six membered ring and such ring may be optionally substituted with loweralkyl or phenyl; or pharmaceutically acceptable salts thereof, useful in the treatment of neoplastic diseases, and bacterial or fungal infections, and for preventing or decreasing the production of abnormally phosphorylated paired helical filament (PHF) epitopes associated with Alzheimer's Disease and, therefore for treating Alzheimer's Disease.