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 and Cytotoxic Activity of a Series of Diacetylenic Compounds Related to Falcarindiol.
作者:William N. SETZER、Xuyuan GU、Eric B. WELLS、Mary C. SETZER、Debra M. MORIARITY
DOI:10.1248/cpb.48.1776
日期:——
The synthesis of a series of diacetylenic compoundsrelated to the natural product falcarindiol has been carried out. Unsymmetrical diacetylenes were prepared by a modification of the Cadiot-Chodkiewicz coupling reaction, while a Glaser coupling was used to prepare symmetrical diacetylenes. These compounds have been tested for in vitro cytotoxic activity against Hep-G2, and H-4-II-E cell lines. Diacetylenes
An Efficient Heterogeneous Palladium(0)-Catalysed Cross-Coupling between 1-Bromoalkynes and Terminal Alkynes Leading to Unsymmetrical 1,3-Diynes
作者:Zhaotao Xu、Jinting Ai、Mingzhong Cai
DOI:10.3184/174751918x15208574638459
日期:2018.3
efficient heterogeneouspalladium(0)-catalysed cross-coupling of 1-bromoalkynes with terminal alkynes was achieved in DMF at room temperature in the presence of 5 mol% of MCM-41-immobilised bidentate phosphine palladium(0) complex [MCM-41-2P-Pd(0)] and 2 mol% of CuI with Et3N as base, yielding a variety of unsymmetrical 1,3-diynes in moderate to good yields. This heterogeneouspalladium(0) complex
Stille Couplings Catalytic in Tin: The “Sn−O” Approach
作者:William P. Gallagher、Ina Terstiege、Robert E. Maleczka
DOI:10.1021/ja0035295
日期:2001.4.1
lle coupling protocol for the stereoselective generation of vinyltins and their subsequent union, employing only catalytic amounts of tin, is described. By recycling the organotinhalide Stille byproduct back to organotinhydride, a hydrostannylation/cross-coupling sequence can be carried out with catalytic amounts of tin. Such a process is most effective with Me(3)SnCl serving as the tin source. This