title: Synthesis and pharmacological properties of thieno[2',3':4,5]pyrimido [2,1-b][1,3,4]thiadiazine derivatives.
abstract: A new series of 2-substituted-7,8-dimethyl-3H,9H-thieno[2',3':4,5]pyrimido[2,1- b][1,3,4]thiadiazin-9-ones 5a-d and 6a,b was synthesized through the hydrazinium(1+) salt of 3-amino-2,3-dihydro-5,6-dimethyl-2-thioxo- thieno[2,3-d]pyrimidin-4(1H)-one, 2. These derivatives and two analogs 10a,b were tested for their analgesic and antiinflammatory properties. The pharmacological results are discussed in comparison with those of related compounds previously tested.
mesh_terms: D000700:Analgesics / Q000138:chemical synthesis* / Q000494:pharmacology; D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000138:chemical synthesis* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D051379:Mice; D011743:Pyrimidines / Q000138:chemical synthesis* / Q000494:pharmacology; D051381:Rats; D017207:Rats, Sprague-Dawley; D013055:Spectrophotometry, Infrared; D013829:Thiadiazines / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D000700:Analgesics; D000894:Anti-Inflammatory Agents, Non-Steroidal; D011743:Pyrimidines; D013829:Thiadiazines