99504-81-1Relevant articles and documents
Synthesis of some new pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidin-4(3H)-ones and pyrido[3′,2′: 4,5]thieno[2,3-e]-1,2,4-triazolo[1,5-c]pyrimidine derivatives
Ho, Yuh-Wen
, p. 1163 - 1174 (2007/10/03)
2,3-Disubstituted-pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidin-4( 3H) -ones 8a-8c, 9a-9c were obtained by treatment of pyrido[3′,2′:4,5]thieno[3,2-d][1,3]oxazin-4(3H)-one derivative 3, 3-diacetylamino-thieno[2,3-b]pyridine derivative 5 and 3-ethoxymethyleneaminothieno[2,3-b]pyridine derivative 7a with appropriate amines, respectively. Condensation of compounds 8b, 9b with appropriate α-chlorocarbonyl compounds gave the corresponding 3-substituted carbonylmethylene-pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidin-4(3H)-one derivatives 13a-d. 3-N-Substituted-pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidin-4(3H)-ones 15a,b, 16a,b and 18a,b were also obtained by cyclization of carbohydrazide 14 with different reagents under a variety of conditions. On the other hand, cyclization of 3-amino-4-imino-pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidin-4(3H)-ones 21a,b with appropriate orthoesters afforded the corresponding 3,5-dialkyl-pyrido[3′,2′:4,5]thieno[2,3-e]-1,2,4-triazolo[1,5-c] pyrimidines 22a-f.
Synthesis and analgesic activity of 3-substituted derivatives of pyrido[3',2';4,5]thieno[3,2-d]pyrimidin-4(3H)-one
Bousquet,Romeo,Guerrera,et al.
, p. 869 - 874 (2007/10/02)
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