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 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 invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8 and R9 are as described herein, compositions including the compounds and methods of using the compounds.

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 invention provides novel compounds having the general formula (I) wherein R2, R3, R4, R5, R6, R7, R8, X, A and R11 are as described herein, compositions including the compounds and methods of using the compounds.

Abstract: The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, A, X and R11 are as described herein, compositions including the compounds and methods of using the compounds.

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 invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R3, R8, R9, R10 and R11 are as described herein, compositions including the compounds and methods of using the compounds.

Abstract: The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R3, R8, R9, R10, R11 and R23 are as described herein, compositions including the compounds and methods of using the compounds.

Abstract: The invention provides novel compounds having the general formula (I) wherein R2, R3, R4, R5, R6, R7, R3, R8, R10, R11 and R23 are as described herein, compositions including the compounds and methods of using the compounds.

Abstract: The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6 and R7 are as described herein, compositions including the compounds and methods of using the compounds.

Abstract: The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8 and R9 are as described herein, compositions including the compounds and methods of using the compounds.

Abstract: The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6 and R7 are as described herein, compositions including the compounds and methods of using the compounds.