N-氰基氯乙酰胺与共轭的巯基(硒代)腈反应,生成区域选择性S(Se)烷基化产物,该产物随后可参与Thorpe反应。所得的烯氨基氰在酸或碱催化下形成嘧啶环,形成稠合的二氨基嘧啶。根据该通用方案,功能性取代的噻吩并[3,2- d ]嘧啶,噻唑并[4,5- d ]嘧啶,嘧啶并[4“,5”:4',5']噻吩并[3',2': 4,5] thieno [3,2- d ]嘧啶,吡啶基[3',2'4,5] thieno(硒代苯酚)[3,2- d ]嘧啶,它们的氢化类似物和嘧啶-[4',5 ′:4,5]噻吩并[2,3- d ]嘧啶。
Disclosed are substituted tricyclic heterocycle compounds of the formulas (I), (II) and (III) shown below, wherein R
1
, R
2
, R
3
and R
4
are described herein, which are active as anti-inflammatory agents. Also disclosed are methods of using and making such compounds.
Disclosed are substituted tricyclic heterocycle compounds of the formulas (I), (II) and (III) shown below, wherein R
1
, R
2
, R
3
and R
4
are described herein, which are active as anti-inflammatory agents. Also disclosed are methods of using and making such compounds.
Regioselective synthesis of substituted thieno[2,3-b]pyrimidines and pyrido[3?,2?:4,5]thienopyrimidines and their [3,2-d]selenopheno analogs from 3-cyanopyridine-2(1H)-thiones, 3-cyano-pyridine-2(1H)-selenones, and N-cyanochloracetamidine
作者:V. A. Artemov、L. A. Rodinovskaya、A. M. Shestopalov、V. P. Litvinov