| abstract |
(57) Abstract: A tricyclic compound having tachykinin receptor antagonistic activity, substance P receptor antagonistic activity, etc., and useful as a medicament for the prevention and treatment of pollakiuria and urinary incontinence, which is simple and industrial. The present invention provides an economically advantageous production method. SOLUTION: The formula: Wherein the compound represented by the formula (I) or a salt thereof is subjected to a cyclization reaction in a poor solvent. A method for producing a compound represented by the formula or a salt thereof. |