作者: Daniel AstraZeneca R D Montreal Pagè , Hua AstraZeneca R D Montreal Yang , Ziping AstraZeneca R D Montreal Liu , Christopher Astrazeneca R D Montreal Walpole
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摘要: Compounds of formula (I) or pharmaceutically acceptable salts thereof: wherein R1, R2, R3, R4 and Z are as defined in the specification well pharmaceutical compositions including compounds prepared. They useful therapy, particular management pain.