METHOD FOR PRODUCING 3-MERCAPTOPROPIONIC ACID, AND METHODS USING SAME FOR PRODUCING CARBOXYLIC ACID ESTER COMPOUND HAVING MERCAPTO GROUP AND THIOURETHANE-BASED OPTICAL MATERIAL
可以快速有效地访问N-芳基苯并[ b ]呋喃[3,2 - d ]嘧啶-4-胺类库(1)及其新型苯并[ b ]噻吩并[3,2 - d ]嘧啶-4-胺类库首次研究了类似物(2)。通过苯并[ b ]呋喃和苯并[ b ]噻吩前体与N,N的反应获得的N '-(2-氰芳基)-N,N-二甲基甲亚胺通过微波加速缩合和合适的苯胺的Dimroth重排获得标题化合物-二甲基甲酰胺二甲基乙缩醛。这项工作还证明,控制良好的参数可以舒适地使用微波技术,既安全又有益于环境。本文获得的某些产品表现出有趣的体外抗增殖作用。
Benzothienopyrazinedione compounds and their preparation and use
申请人:Novo Nordisk A/S
公开号:US05182279A1
公开(公告)日:1993-01-26
Novel [1]benzothieno[2,3-b]pyrazine-2,3(1H,4H)-diones or tautomeric forms thereof of the general formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, halogen, alkyl, alkoxy or trifluoromethyl. The compounds are useful for treating a central nervous system ailment associated with the NMDA receptor-associated glycine site.
Fmoc-Based Synthesis of Peptide Thioacids for Azide Ligations <i>via</i> 2-Cyanoethyl Thioesters
作者:Richard Raz、Jörg Rademann
DOI:10.1021/ol302247h
日期:2012.10.5
preparation of peptide thioacids from 2-cyanoethyl peptide thioesters has been accomplished. S-2-Cyanoethyl peptide thioesters were obtained cleanly without the need for purification from resin-bound tert-butyl peptide thioesters using 3-mercaptopropionitrile as a nucleophile. Elimination of the 2-cyanoethyl group proceeded rapidly (t1/2 < 8 min) under mild conditions and furnished peptide thioacids up
New thiophene compounds and a new process for the manufacture of thiophene compounds by dehydrogenating dihydrothiophene with certain halogen compounds. The products are starting materials for the manufacture of pharmaceuticals, dyes and plant protection agents and, in particular, for the manufacture of additives to foodstuffs, feeds, beverages and pharmaceuticals.
Synthesis and biological evaluation of N-arylbenzo[b]thieno[3,2-d]pyrimidin-4-amines and their pyrido and pyrazino analogues as Ser/Thr kinase inhibitors
A useful and rapid access to libraries of N-arylbenzo[b]thieno[3,2-d]pyrimidin-4-amines and their pyrido and pyrazino analogues was designed and optimized for the first time via microwave-accelerated condensation and Dimrothrearrangement of the starting anilines with N′-(2-cyanoaryl)-N,N-dimethylformimidamides obtained by reaction of thiophene precursors with dimethylformamide dimethylacetal. The
通过微波加速的缩合反应和Dimroth重排设计并首次优化和优化了N-芳基苯并[ b ]噻吩并[3,2 - d ]嘧啶-4-胺及其吡啶基和吡嗪类似物的库的快速访问方法。通过噻吩前体与二甲基甲酰胺二甲基乙缩醛反应获得的N '-(2-氰基芳基)-N,N-二甲基甲亚胺与起始苯胺。估计了最终产物对五种蛋白激酶(CDK5 / p25,CK1δ/ɛ,GSK3α/β,DYRK1A和CLK1)的抑制力。N-芳基吡啶并[3',2':4,5]噻吩并[3,2 - d ]嘧啶-4-胺系列化合物(事实证明,图4a – j)对于开发新的CK1和CLK1激酶药理抑制剂具有特别的希望。
Radical annulations with nitriles: Novel cascade reactions of cyano-substituted alkyl and sulfanyl radicals with isonitriles
Newradical annulation reactions are described involving addition of cyano-substituted alkyl and sulfanyl radicals to aromatic isonitriles. The tandemcyclisation of the resulting imidoyl radicals onto the cyano group affords cyclopenta- and thienoquinoxalines, respectively. The intervention of the isonitriles in the aromatisation process of the cyclohexadienyl radicals is discussed, as well as the