title: [Syntheses of analgesics. 28. Syntheses of 4-amino-3-methyl-1,2-diphenyl-2-propionyloxybutane derivatives].
mesh_terms: D000700:Analgesics / Q000138:chemical synthesis*; D011431:Dextropropoxyphene / Q000138:chemical synthesis; D004987:Ethers / Q000138:chemical synthesis; D011422:Propionates / Q000138:chemical synthesis
chemical_list: D000700:Analgesics; D004987:Ethers; D011422:Propionates; D011431:Dextropropoxyphene