The present invention provides a compound represented by the formula
which is useful as an agent for the prophylaxis or treatment of diseases related to the action of melatonin, or a salt thereof and the like.
本发明提供了一种化合物,其表示为式,该化合物可用作预防或治疗与
褪黑激素作用相关的疾病的药剂,或其盐等。