Novel morphinan derivatives and pharmaceutically acceptable acid addition salts thereof as compounds having abilities to bind to opioid &egr;-receptor, which have agonist or antagonist activities, are disclosed. The morphinan derivatives according to the present invention are represented by the formula (I).
本发明涉及一种新型
吗啡样化合物及其药学上可接受的酸盐,可作为与μ-阿片受体结合的化合物,具有激动剂或拮抗剂活性。根据本发明,所述
吗啡样化合物的衍
生物由式(I)表示。