在烯烃存在下2-叠氮基苯并[ b ]噻吩的热裂解:1-(2-苯并[ b ]噻吩基)氮丙啶和/或thiochroman-4-甲腈的新合成路线
摘要:
在烯烃存在下2-叠氮基苯并[ b ]噻吩的温和热裂解导致形成1-(2-苯并[ b ]噻吩基)氮丙啶和/或4-氰基噻吩并以相当好的收率形成。贫电子的烯烃和反应温度的降低有利于以硫代色烷为代价形成氮丙啶。提供了有利于单线态氮烯中间体的证据,该中间体加成到烯烃双键上或经历开环反应以得到被存在的烯烃所俘获的邻-喹啉类亚乙基硫酮。这些发现提供了第一个由2-nitreno取代的噻吩开环的例子。
Novel N-(2-benzo[b]thienyl)iminophosphoranes react with α,β-unsaturated aldehydes and ketones to give benzo[b]thieno[2,3-b]pyridines in an aza-Wittig/electrocyclic-ring closure process. The diphenylmethyliminophosphorane reacts with aromatic and heteroaromatic aldehydes to give iminic products: upon UV irradiation, two imines furnish cyclization products in acceptable yields.
新型的N-(2-苯并[ b ]噻吩基)亚氨基正膦与α,β-不饱和醛和酮反应生成苯并[ b ]噻吩并[2,3- b ]吡啶,并经氮杂-维蒂希/电环封闭。二苯基甲基亚氨基膦烷与芳族和杂芳族醛反应生成亚胺基产物:在紫外线照射下,两个亚胺以可接受的收率提供环化产物。
In situ click chemistry-based rapid discovery of novel HIV-1 NNRTIs by exploiting the hydrophobic channel and tolerant regions of NNIBP
作者:Dongwei Kang、Da Feng、Lanlan Jing、Yanying Sun、Fenju Wei、Xiangyi Jiang、Gaochan Wu、Erik De Clercq、Christophe Pannecouque、Peng Zhan、Xinyong Liu
DOI:10.1016/j.ejmech.2020.112237
日期:2020.5
the most important targets for the development of anti-HIVdrugs for their well-solved three-dimensional structure and well-known mechanism of action. In this study, with HIV-1 RT as target, we used miniaturized parallel click chemistry synthesis via CuAAC reaction followed by in situ biological screening to discover novel potent HIV-1 NNRTIs. A 156 triazole-containing inhibitor library was assembled
N-(3-Benzo[b]thienyl)- and N-(2-benzo[b]thienyl)-imino-triphenylphosphorane—prepared from the corresponding azidobenzo[b]thiophenes—react with α,β-unsaturated aldehydes under mild conditions to give directly benzo-[b]thieno[3,2-b]- and benzo[b]thieno[2,3-b]-pyridines through electrocyclization (and eventual dehydrogenation) of the initial aza Wittig imine products.
The copper(I)‐exchanged zeolite CuI‐USY proved to efficiently catalyze the direct azidation of arylboronic acids with sodium azide under simple and practical conditions, namely at room temperature under air with methanol as solvent and without any additive. This easy‐to‐prepare and cheap catalytic material has been demonstrated to be recyclable and the mild azidation conditions further showed good
铜(I)交换沸石Cu I -USY被证明可以在简单实用的条件下,即在室温,空气中,以甲醇为溶剂且无任何添加剂的情况下,有效地催化叠氮化钠直接芳基硼酸的叠氮化反应。这种易于制备且便宜的催化材料已被证明是可回收的,并且温和的叠氮化条件进一步显示出良好的官能团耐受性,从而导致了各种取代的(杂)芳基叠氮化物(18个例子)。有趣的是,叠氮化反应已成功地与CuAAC反应偶联,因此可以通过一锅Cu I催化过程从芳基硼酸中获得三唑。
PROTEIN KINASE D INHIBITORS
申请人:Wipf Peter
公开号:US20140045821A1
公开(公告)日:2014-02-13
Compounds according to Formula (I), are potent inhibitors of protein kinase D (pan-PKD) activity. PKD controls key signaling cascades in cells, affecting cell proliferation, gene transcription, and protein trafficking. Accordingly, pharmaceutically acceptable compositions of the inventive compounds are candidate therapeutics for pathological conditions conditioned by changes in PKD activity.