Organic compounds
AssigneeIntra-Cellular Therapies, Inc.
InventorsPeng Li, Haiyan Wu
Life of this patent
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Abstract
The invention provides novel 7,8-dihydro-imidazo[1,2-a]pyrazolo[4,3-e]pyrimidin-4-one compounds and 7,8,9-trihydro-[1H or 2H]-pyrimido[1,2-a]pyrazolo[4,3-e]pyrimidin-4(5H)-one compounds, substituted at the 1 or 2 position with C2-9 alkyl, C3-9 cycloalkyl, heteroarylalkyl, or substituted arylalkyl, in free, salt or prodrug form, processes for their production, their use as pharmaceuticals, particularly as PDE1 inhibitors, and pharmaceutical compositions comprising them.
Claims20
A 7,8-dihydro-[1H or 2H]-imidazo[1,2-a]pyrazolo[4,3-e]pyrimidin-4(5H)-one or 7,8,9-trihydro-[1H or 2H]-pyrimido[1,2-a]pyrazolo[4,3-e]pyrimidin-4(5H)-one, substituted at the 1 or 2 position with C2-9 alkyl, C3-9 cycloalkyl, heteroarylalkyl, or substituted arylalkyl, in free, salt or physiological hydrolysable and acceptable ester prodrug form.
A compound of Formula I
- wherein
- (i) R1 is H or C1-4 alkyl;
- (ii) R4 is H or C1-4 alkyl and R2 and R3 are, independently, H or C1-4 alkyl, aryl, heteroaryl, heteroarylalkoxy, arylalkoxy, heteroarylalkyl or arylalkyl;
- (iii) R5 is a substituted heteroarylalkyl, or R5 is attached to one of the nitrogen atoms on the pyrazolo portion of Formula I and is a moiety of Formula A
- wherein X, Y and Z are, independently, N or C;
- R8, R9, R11 and R12 are independently H or halogen;
- and R10 is halogen, alkyl, cycloalkyl, haloalkyl, aryl, heteroaryl, or thiadiazolyl, diazolyl, triazolyl, tetrazolyl, arylcarbonyl, alkylsulfonyl, heteroarylcarbonyl, or alkoxycarbonyl;
- provided that when X, Y, or Z is nitrogen, R8, R9, or R10, respectively, is not present;
- (iv) R6 is H, alkyl, aryl, heteroaryl, arylalkyl, arylamino, heterarylamino, N,N-dialkylamino, N,N-diarylamino, or N-aryl-N-(arylalkyl)amino;
- and
- (v) n=0 or 1;
- (vi) when n=1, A is —C(R13R14)—
- wherein R13 and R14, are, independently, H or C1-4 alkyl, aryl, heteroaryl, heteroarylalkoxy, arylalkoxy, heteroarylalkyl or arylalkyl,
- wherein
- aryl is optionally substituted with C1-4 alkyl, halogen, haloC1-4 alkyl, hydroxy, carboxy or an additional aryl or heteroaryl;
- and
- heteroaryl is optionally substituted with C1-4 alkyl, halogen, haloC1-4 alkyl, hydroxy or carboxy;
- in free, salt or physiological hydrolysable and acceptable ester prodrug form.
Dependencies are inferred from the claim text.