吡啶并[2,3- d ]嘧啶对吡喃并[2',3':4,5]-和恶唑并[5',4':4,5]吡啶并[2,3- d ]嘧啶的闭环反应
摘要:
5-羟基-吡啶并[2,3- d ]嘧啶1与丙二酸酯的环缩合反应得到吡喃并[2',3':4,5]-吡啶并[2,3- d ]嘧啶2。硝化1并在羧酸/酸酐存在下用锌还原得到2-烷基恶唑并[5',4':4,5]吡啶[2,3- d ]嘧啶4,将其开环成6-氨基吡啶[2,3- d ]嘧啶5、6和7。6-氨基吡啶并[2,3- d ]嘧啶6与苯甲酰氯8的环化反应生成2-芳基恶唑并[5',4':4,5]吡啶并[2,3- d ]嘧啶9。通过差示扫描量热法(DSC)已经研究了用于环化的反应条件。
Transcription factor modulating compounds and methods of use thereof
申请人:Levy Stuart B.
公开号:US20090131401A1
公开(公告)日:2009-05-21
Substituted benzoimidazole compounds useful as anti-infectives that decrease resistance, virulence, or growth of microbes are provided. Methods of making and using substituted benzoimidazole compounds, as well as pharmaceutical preparations thereof, in, e.g., reducing antibiotic resistance and inhibiting biofilms.
Ring closure reactions of pyrido[2,3-<i>d</i>]pyrimidines to pyrano[2′,3′:4,5]- and oxazolo[5′,4′:4,5]pyrido[2,3-<i>d</i>]pyrimidines
作者:Dang Van Tinh、Wolfgang Stadlbauer
DOI:10.1002/jhet.5570450517
日期:2008.9
zinc in the presence of carboxylic acids/anhydrides gave 2-alkyloxazolo[5′,4′:4,5]pyrido[2,3-d]pyrimidines 4, which were ring-opened to 6-aminopyrido[2,3-d]pyrimidines 5, 6 and 7. Cyclization of 6-aminopyrido[2,3-d]pyrimidines 6 with benzoylchlorides 8 gave 2-aryloxazolo[5′,4′:4,5]pyrido[2,3-d]pyrimidines 9. Reaction conditions for the cyclization have been studied by differential scanning calorimetry
5-羟基-吡啶并[2,3- d ]嘧啶1与丙二酸酯的环缩合反应得到吡喃并[2',3':4,5]-吡啶并[2,3- d ]嘧啶2。硝化1并在羧酸/酸酐存在下用锌还原得到2-烷基恶唑并[5',4':4,5]吡啶[2,3- d ]嘧啶4,将其开环成6-氨基吡啶[2,3- d ]嘧啶5、6和7。6-氨基吡啶并[2,3- d ]嘧啶6与苯甲酰氯8的环化反应生成2-芳基恶唑并[5',4':4,5]吡啶并[2,3- d ]嘧啶9。通过差示扫描量热法(DSC)已经研究了用于环化的反应条件。