Antibacterial compounds of formula (I) are provided, as well as stereoisomers and pharmaceutically acceptable salts thereof; pharmaceutical compositions comprising such compounds; methods of treating bacterial infections by the administration of such compounds; and processes for the preparation of such compounds.
Nickel-Catalyzed Asymmetric Reductive Cross-Coupling Between Vinyl and Benzyl Electrophiles
作者:Alan H. Cherney、Sarah E. Reisman
DOI:10.1021/ja508067c
日期:2014.10.15
between vinyl bromides and benzyl chlorides has been developed. This method provides direct access to enantioenriched products bearing aryl-substituted tertiary allylic stereogenic centers from simple, stable starting materials. A broad substrate scope is achieved under mild reaction conditions that preclude the pregeneration of organometallic reagents and the regioselectivity issues commonly associated with
已开发出一种 Ni 催化的溴乙烯和苄基氯之间的不对称还原交叉偶联。该方法提供了从简单、稳定的起始材料直接获得带有芳基取代的叔烯丙基立体中心的对映体富集的产品。在温和的反应条件下实现了广泛的底物范围,排除了有机金属试剂的预生成和通常与不对称烯丙基芳基化相关的区域选择性问题。
Synthesis of (3<i>E</i>, 5<i>Z</i>)-3,5-Dodecadienylacetate, the Sex Pheromone of<i>Phtheochroa cranaodes</i>(<i>Lepidoptera: Tortricidae</i>)
作者:Jhillu Singh YADAV、Etukala Jagan REDDY
DOI:10.1271/bbb.64.1726
日期:2000.1
(3E, 5Z)-3,5-Dodecadienyl acetate, the female sexpheromone of Phtheochroacranaodes, was regio and stereo-selectively synthesized from 1-octyne and (E)-4bromo-3-buten-1-ol by using Pd(PPh3)4, CuI and piperidine to afford the enyne (5). Further elaboration afforded the target pheromone. The synthetic pheromone was identified with the natural product by its MS and IR, data GLC retention time and biological
Palladium-Catalyzed Cross-Couplings of Unsaturated Halides Bearing Relatively Acidic Hydrogen Atoms with Organozinc Reagents
作者:Paul Knochel、Zhibing Dong、Georg Manolikakes、Jinshan Li
DOI:10.1055/s-0028-1083286
日期:2009.2
A wide range of polyfunctional aryl, heteroaryl, alkyl, and benzylic zinc reagents were coupled with unsaturated aryl halides bearing an acidic NH or OH proton, usingpalladium(II) acetate (1 mol%), and S-Phos (2 mol%) as catalyst without the need of protecting groups. palladium catalysis - cross-coupling - functionalized zinc reagents - polyfunctional biaryls
A synthesis of 2-epi-fagomine using gold(I)-catalysed allene cyclisation
作者:Roderick W. Bates、Pearly Shuyi Ng
DOI:10.1016/j.tetlet.2011.03.130
日期:2011.6
A synthesis of 2-epi-fagomine via a highly stereoselective gold(I)-catalysedallene cyclisation is described. The stereochemical outcome of the cyclisation is opposite to that observed in previous studies. In contrast, gold(III)-catalysed cyclisation is inefficient and gives rise to double cyclisation by-products.