Cycloadditions in syntheses. XXXVII. Syntheses of 6-trifluoromethyl-1,2,4-triazines and -1,2,4-triazin-5-ones and their pericyclic reactions with olefins.
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.
The present application relates to novel bicyclic compounds, to their use for controlling animal pests and to processes and intermediates for their preparation.