The present invention aims to provide a compound having a PDE inhibitory action and useful as a medicament for the prophylaxis or treatment of schizophrenia and the like.
A compound represented by the formula (1
x
):
wherein each symbol is as described in the DESCRIPTION, or the formula (1):
W
1
—W
2
(1)
wherein each symbol is as described in the DESCRIPTION,
or a salt thereof.
Provided is a compound having a PDE10A inhibitory action, and useful as a medicament for the prophylaxis or treatment of mental diseases such as schizophrenia and the like, and the like. A compound represented by the formula (I):
wherein each symbol is as defined in the DESCRIPTION, or a salt thereof.