Abstract: The present invention relates to a compound of formula I, HetAr is a five or six membered heteroaryl group, selected from wherein R1 is hydrogen, halogen, lower alkyl, lower alkoxy or lower alkyl substituted by halogen, and may be the same or different, if two R1 occur; R2 is lower alkyl or a mono- or polydeutered derivative thereof, lower alkyl substituted by halogen or lower alkoxy, lower alkenyl unsubstituted or substituted by halogen, cycloalkyl or CH2-cycloalkyl unsubstituted or substituted by halogen, heterocycloalkyl or CH2-heterocycloalkyl unsubstituted or substituted by lower alkyl; R3 is halogen, lower alkyl, lower alkyl substituted by halogen, lower alkoxy substituted by halogen or S(O)2-lower alkyl; n is 1, 2 or 3; if n is >1, then R3 may be the same or different; or to a pharmaceutically active acid addition salt thereof, to a racemic mixture or to its corresponding enantiomer and/or an optical isomer and/or stereoisomer thereof.

Abstract: The present invention relates to a compound of formula I, HetAr is a five or six membered heteroaryl group, selected from wherein R1 is hydrogen, halogen, lower alkyl, lower alkoxy or lower alkyl substituted by halogen, and may be the same or different, i-f two R1 occur; R2 is lower alkyl or a mono- or polydeutered derivative thereof, lower alkyl substituted by halogen or lower alkoxy, lower alkenyl unsubstituted or substituted by halogen, cycloalkyl or CH2-cycloalkyl unsubstituted or substituted by halogen, heterocycloalkyl or CH2-heterocycloalkyl unsubstituted or substituted by lower alkyl; R3 is halogen, lower alkyl, lower alkyl substituted by halogen, lower alkoxy substituted by halogen or S(0)2-lower alkyl; n is 1, 2 or 3; if n is >1, then R3 may be the same or different; or to a pharmaceutically active acid addition salt thereof, to a racemic mixture or to its corresponding enantiomer and/or an optical isomer and/or stereoisomer thereof.

Abstract: The present invention relates to a compound of formula I, 1-1 or 1-2 wherein R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, lower alkoxy, or lower alkoxy substituted by halogen; R1 may be different if n=2 or 3 n is 1, 2 or 3 Ar is a six membered heteroaryl group, selected from wherein R2 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen or lower alkoxy; R3 is hydrogen or halogen; or to a pharmaceutically active acid addition salt thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to a compound of formula (I), wherein R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, lower alkoxy or lower alkoxy substituted by halogen; R may be the same or different, if n=2 or 3; n is 1, 2 or 3; m is 1, 2 or 3; Ar is a five or six membered heteroaryl group, selected from (II), (III), (IV) or (V) wherein R2 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen or lower alkoxy; R3 is hydrogen or halogen; -( ) m-is —(CH2)m— or to pharmaceutically active acid addition salts thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-in-farct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to compounds of formula wherein HetAr is a five or six membered hetaryl group, containing one, two or three heteroatoms, selected from N, O or S; R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen or lower alkoxy; R2 is lower alkyl substituted by halogen; R3 is hydrogen, lower alkyl substituted by halogen, lower alkyl or lower alkyl substituted by hydroxy; Y is R4 is lower alkoxy, lower alkoxy substituted by halogen or CN; or to pharmaceutically active acid addition salts thereof, to racemic mixtures or to its corresponding enantiomers and/or optical isomers and/or stereoisomers thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to a compound of formula wherein HetAr is a five or six membered hetaryl group, containing one, two or three heteroatoms, selected from N, O or S; R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, or lower alkoxy; R2 is lower alkyl substituted by halogen, —CH2—C3-6-cycloalkyl, substituted by one or two substituents, selected from lower alkyl substituted by halogen or halogen, or is lower alkenyl substituted by halogen; R3 is hydrogen, lower alkyl substituted by halogen, lower alkyl, halogen, C3-6-cycloalkyl or lower alkyl substituted by hydroxy; n is 1 or 2; for n=2, R1 can be independent to each other; Y is CH or N; or to a pharmaceutically active acid addition salt thereof, to a racemic mixture or its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof.

Abstract: The present invention relates to a compound of formula I wherein R1 is phenyl, lower alkyl, C3-6-cycloalkyl, —CH2—C3-6-cycloalkyl or bridged C4-6-cycloalkyl, substituted by one, two or three halogen atoms, or by lower alkyl or lower alkyl substituted by halogen; R2 is a five or six membered heteroaryl group, selected from wherein R6 is hydrogen, lower alkyl, halogen or lower alkoxy; and R7 is hydrogen, lower alkoxy or halogen; R3 is lower alkyl or lower alkyl substituted by hydroxy: R4 is hydrogen or lower alkyl; R5 is hydrogen or lower alkyl; n is 1 or 2; -( )n- is —CH2— or —CH2CH2— for n being 1 or 2; or to a pharmaceutically active acid addition salt thereof, to a racemic mixture or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrom

Abstract: The present invention relates to compounds of formula I, wherein R1 is phenyl, lower alkyl, C3-6-cycloalkyl, —CH2—C3-6-cycloalkyl, or bridged C3-5-cycloalkyl, optionally substituted by one, two or three substituents, selected from halogen, lower alkyl or lower alkyl substituted by halogen; R2 is hydrogen, halogen, lower alkoxy, lower alkyl substituted by halogen or lower alkoxy substituted by halogen; R3 is a five membered heteroaryl group, selected from wherein R6 is hydrogen or lower alkyl; R7 is halogen or lower alkyl; R8 is hydrogen or lower alkyl; R9 is hydrogen or lower alkyl; R4 is lower alkyl or lower alkyl substituted by hydroxy; R5/R5? is independently from each other hydrogen or lower alkyl; -( )n- is —CH2— or —CH2CH2— for n being 1 or 2; X is CH or N; or to pharmaceutically active acid addition salts thereof, to racemic mixtures or to its corresponding enantiomers and/or optical isomers and/or stereoisomers thereof.

Abstract: The present invention relates to a compound of formula (I), wherein R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, lower alkoxy or lower alkoxy substituted by halogen; and R1 may be different if n is 2 or 3; R2 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, CN, lower alkoxy or lower alkoxy substituted by halogen; X is CH or N; m is 1, 2 or 3; -( )m is —(CH2)m—; n is 1, 2 or 3; Ar is a five membered heteroaryl group, selected from formula (A), (B), (C), (D), (E) or (F), wherein R3 is hydrogen, methyl or chloro; R4 is hydrogen or methyl; R5 is F, Cl, CHF2 or CF3; or to pharmaceutically active acid addition salts thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to compounds of formula hetaryl is a five membered heteroaryl group, containing 1 to 3 heteroatoms, selected from O, S or N; R1 is hydrogen, halogen, lower alkyl, lower alkoxy, lower alkyl substituted by halogen, S-lower alkyl substituted by halogen or lower alkoxy substituted by halogen, or two neighboring carbon atoms may form on phenyl an additional ring containing —O—CH2—O—; n is 1 to 5; R2 is hydrogen or lower alkyl substituted by halogen; R3 is hydrogen or lower alkyl substituted by halogen; or to pharmaceutically active acid addition salts thereof, to racemic mixtures or to its corresponding enantiomers or optical isomers or stereoisomers thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to a compound of formula wherein HetAr is a five or six membered hetaryl group, containing one, two or three heteroatoms, selected from N, O or S; R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, or lower alkoxy; R2 is lower alkyl substituted by halogen, —CH2—C3-6-cycloalkyl, substituted by one or two substituents, selected from lower alkyl substituted by halogen or halogen, or is lower alkenyl substituted by halogen; R3 is hydrogen, lower alkyl substituted by halogen, lower alkyl, halogen, C3-6-cycloalkyl or lower alkyl substituted by hydroxy; n is 1 or 2; for n=2, R1 can be independent to each other; Y is CH or N; or to a pharmaceutically active acid addition salt thereof, to a racemic mixture or its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof.

Abstract: The present invention relates to a compound of formula (I), wherein R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, lower alkoxy or lower alkoxy substituted by halogen; R may be the same or different, if n=2 or 3; n is 1, 2 or 3; m is 1, 2 or 3; Ar is a five or six membered heteroaryl group, selected from (II), (III), (IV) or (V) wherein R2 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen or lower alkoxy; R3 is hydrogen or halogen; -( ) m - is —(CH2)m— or to pharmaceutically active acid addition salts thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-in-farct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to a compound of formula I, 1-1 or 1-2 wherein R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, lower alkoxy, or lower alkoxy substituted by halogen; R1 may be different if n=2 or 3 n is 1, 2 or 3 Ar is a six membered heteroaryl group, selected from wherein R2 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen or lower alkoxy; R3 is hydrogen or halogen; or to a pharmaceutically active acid addition salt thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to compounds of formula I, wherein R1 is phenyl, lower alkyl, C3-6-cycloalkyl, —CH2—C3-6-cycloalkyl, or bridged C3-5-cycloalkyl, optionally substituted by one, two or three substituents, selected from halogen, lower alkyl or lower alkyl substituted by halogen; R2 is hydrogen, halogen, lower alkoxy, lower alkyl substituted by halogen or lower alkoxy substituted by halogen; R3 is a five membered heteroaryl group, selected from wherein R6 is hydrogen or lower alkyl; R7 is halogen or lower alkyl; R8 is hydrogen or lower alkyl; R9 is hydrogen or lower alkyl; R4 is lower alkyl or lower alkyl substituted by hydroxy; R5/R5? is independently from each other hydrogen or lower alkyl; ( )n- is —CH2— or —CH2CH2— for n being 1 or 2; X is CH or N; or to pharmaceutically active acid addition salts thereof, to racemic mixtures or to its corresponding enantiomers and/or optical isomers and/or stereoisomers thereof.

Abstract: The present invention relates to a compound of formula (I), wherein R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, lower alkoxy or lower alkoxy substituted by halogen; and R1 may be different if n is 2 or 3; R2 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, CN, lower alkoxy or lower alkoxy substituted by halogen; X is CH or N; m is 1, 2 or 3; -( )m is —(CH2)m—; n is 1, 2 or 3; Ar is a five membered heteroaryl group, selected from formula (A), (B), (C), (D), (E) or (F), wherein R3 is hydrogen, methyl or chloro; R4 is hydrogen or methyl; R5 is F, Cl, CHF2 or CF3; or to pharmaceutically active acid addition salts thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to compounds of formula wherein HetAr is a five or six membered hetaryl group, containing one, two or three heteroatoms, selected from N, O or S; R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen or lower alkoxy; R2 is lower alkyl substituted by halogen; R3 is hydrogen, lower alkyl substituted by halogen, lower alkyl or lower alkyl substituted by hydroxy; Y is R4 is lower alkoxy, lower alkoxy substituted by halogen or CN; or to pharmaceutically active acid addition salts thereof, to racemic mixtures or to its corresponding enantiomers and/or optical isomers and/or stereoisomers thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to a compound of formula I wherein R1 is phenyl, lower alkyl, C3-6-cycloalkyl, —CH2—C3-6-cycloalkyl or bridged C4-6-cycloalkyl, substituted by one, two or three halogen atoms, or by lower alkyl or lower alkyl substituted by halogen; R2 is a five or six membered heteroaryl group, selected from wherein R6 is hydrogen, lower alkyl, halogen or lower alkoxy; and R7 is hydrogen, lower alkoxy or halogen; R3 is lower alkyl or lower alkyl substituted by hydroxy: R4 is hydrogen or lower alkyl; R5 is hydrogen or lower alkyl; n is 1 or 2; -( )n- is —CH2— or —CH2CH2— for n being 1 or 2; or to a pharmaceutically active acid addition salt thereof, to a racemic mixture or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to a compound of formula wherein HetAr is a five or six membered hetaryl group, containing one, two or three heteroatoms, selected from N, O or S; R1 is hydrogen, lower alkyl, lower alkyl substituted by halogen, halogen, or lower alkoxy; R2 is lower alkyl substituted by halogen, —CH2—C3-6-cycloalkyl, substituted by one or two substituents, selected from lower alkyl substituted by halogen or halogen, or is lower alkenyl substituted by halogen; R3 is hydrogen, lower alkyl substituted by halogen, lower alkyl, halogen, C3-6-cycloalkyl or lower alkyl substituted by hydroxy; n is 1 or 2; for n=2, R1 can be independent to each other; Y is CH or N; or to a pharmaceutically active acid addition salt thereof, to a racemic mixture or its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof.

Abstract: The present invention relates to compounds of formula hetaryl is a five membered heteroaryl group, containing 1 to 3 heteroatoms, selected from O, S or N; R1 is hydrogen, halogen, lower alkyl, lower alkoxy, lower alkyl substituted by halogen, S-lower alkyl substituted by halogen or lower alkoxy substituted by halogen, or two neighboring carbon atoms may form on phenyl an additional ring containing —O—CH2—O—; n is 1 to 5; R2 is hydrogen or lower alkyl substituted by halogen; R3 is hydrogen or lower alkyl substituted by halogen; or to pharmaceutically active acid addition salts thereof, to racemic mixtures or to its corresponding enantiomers or optical isomers or stereoisomers thereof. The compounds may be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The present invention relates to compounds of the general formula I wherein Het, R1, R2, W and X are as defined herein. Compounds of formula I are useful for treating neuropsychiatric disorders.