This invention relates to novel opioid derivatives of Formula I: or a pharmaceutically acceptable salt or solvate thereof, wherein R1, R3, R4 and Z are as defined herein in the disclosure. The invention also relates to the use of such compounds for the treatment or prevention of, for example, pain.
这项发明涉及公式I的新型阿片类衍
生物:或其药用可接受的盐或溶剂,其中R1、R3、R4和Z如本公开说明中所定义。该发明还涉及利用这类化合物治疗或预防疼痛等疾病的用途。