A compound of the formula
wherein R1 and R2 are H, a hydrocarbon group or a heterocyclic group, or R1 and R2 are combinedly a spiro ring; R3 is a hydrocarbon group, a substituted amino group, a substituted hydroxyl group or a heterocyclic group; R4 is H or alkyl; ring A is a substituted benzene ring; m and n denote 1 to 4; overscore (.........)} means a single or double bond or a salt, a process of producing thereof and a composition having a binding affinity for melatonin receptor.
该化合物的公式为其中R1和R2是氢、烃基或杂环基,或者R1和R2共同形成螺环;R3是烃基、取代
氨基、取代羟基或杂环基;R4是氢或烷基;环A是取代苯环;m和n表示1到4;overscore (.........)}表示单键或双键或盐,其制备方法以及具有与
褪黑激素受体结合亲和力的组合物。