Abstract:
The present invention provides a compound useful as an agent for the prophylaxis or treatment of neurodegenerative disease and the like, or a salt thereof.The present invention relates to a compound represented by the formula wherein each symbol is as defined in the specification, or a salt thereof.
Abstract:
The present invention provides a compound which has the effect of PDE inhibition, and which is useful as an agent for preventing or treating schizophrenia. The compound is represented by the formula (I): wherein the symbols are defined in the specification.
Abstract:
The present invention provides a compound useful as an agent for the prophylaxis or treatment of neurodegenerative disease and the like, or a salt thereof.The present invention relates to a compound represented by the formula wherein each symbol is as defined in the specification, or a salt thereof.
Abstract:
The present invention provides a compound which has the effect of PDE inhibition, and which is useful as an agent for preventing or treating schizophrenia or so on represented by the formula (I):
Abstract:
The present invention provides a compound useful as an agent for the prophylaxis or treatment of neurodegenerative disease and the like, or a salt thereof.The present invention relates to a compound represented by the formula wherein each symbol is as defined in the specification, or a salt thereof.