title: Synthesis of novel analgesic agents. I. Pyrazolidines with an oxygenated phenyl substituent.
mesh_terms: D000700:Analgesics / Q000138:chemical synthesis* / Q000494:pharmacology; D000818:Animals; D003640:Dealkylation; D007259:Infrared Rays; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D010636:Phenols / Q000138:chemical synthesis* / Q000494:pharmacology; D011720:Pyrazoles / Q000138:chemical synthesis* / Q000494:pharmacology; D013057:Spectrum Analysis; D013329:Structure-Activity Relationship
chemical_list: D000700:Analgesics; D010636:Phenols; D011720:Pyrazoles