[EN] MACROCYCLIC BROAD SPECTRUM ANTIBIOTICS<br/>[FR] ANTIBIOTIQUES MACROCYCLIQUES À LARGE SPECTRE
申请人:RQX PHARMACEUTICALS INC
公开号:WO2018149419A1
公开(公告)日:2018-08-23
Provided herein are antibacterial compounds, wherein the compounds in some embodiments have broad spectrum bioactivity. In various embodiments, the compounds act by inhibition of bacterial type 1 signal peptidase (SpsB), an essential protein in bacteria. Pharmaceutical compositions and methods for treatment using the compounds described herein are also provided.
An Unexpected Domino Reaction of β-Keto Sulfones with Acetylene Ketones Promoted by Base: Facile Synthesis of 3(2<i>H</i>
)-Furanones and Sulfonylbenzenes
作者:Wei Tong、Qian-Yu Li、Yan-Li Xu、Heng-Shan Wang、Yan-Yan Chen、Ying-Ming Pan
DOI:10.1002/adsc.201700830
日期:2017.11.23
An unexpected domino reaction of β‐keto sulfones with acetylene ketones has been developed. The domino reaction of β‐keto sulfones with diynones proceeded smoothly in the presence of 30 mol% K2CO3 without other additives, and afforded the novel 3(2H)‐furanone derivatives. On replacing the diynones with terminal alkyne ketones, the reaction regioselectivity was changed and sulfonylbenzenes were obtained
β-酮砜与乙炔酮发生了意想不到的多米诺反应。在没有其他添加剂的情况下,在30 mol%K 2 CO 3的存在下,β-酮砜与二炔酮的多米诺反应顺利进行,得到了新颖的3(2 H)-呋喃酮衍生物。用末端炔烃酮取代二炔酮后,反应区域选择性改变,并通过苯环化获得磺酰苯,收率很高。
Oxidation of Propargylic Alcohols with a 2-Quinoxalinol Salen Copper(II) Complex and<i>tert</i>-Butyl Hydroperoxide
作者:Kushan C. Weerasiri、Anne E. V. Gorden
DOI:10.1002/ejoc.201201394
日期:2013.3
selective oxidation of propargylic alcohols to yield the corresponding α,β-acetylenic carbonyl compounds when used in combination with the oxidant tert-butyl hydroperoxide (TBHP). Excellent yields (up to 99 %) are achieved for a variety of propargylic alcohols within 1 h of reaction time. The (salqu)copper(II) complex with TBHP can be used with propargylic alcohols that contain alkyl groups in the α-position
当与氧化剂叔丁基氢过氧化物 (TBHP) 结合使用时,2-喹喔啉醇 (salqu) 的铜 (II) 配合物是一种有效的催化剂,可用于选择性氧化炔丙醇以产生相应的 α,β-炔羰基化合物. 在 1 小时的反应时间内,各种炔丙醇的产率都很高(高达 99%)。与 TBHP 的 (salqu) 铜 (II) 配合物可与在 α 位含有烷基的炔丙醇一起使用,而炔丙醇很难用其他常用方法进行选择性氧化。通过使用这种催化方案,炔醇的氧化比分离的羟基、三键或炔丙基亚甲基的氧化也获得了优异的选择性。
<i>gem</i>-Digold Acetylide Complexes for Catalytic Intermolecular [4 + 2] Cycloaddition: Having Two Gold Centers Is Better for Asymmetric Catalysis
Gold(I)-catalyzedhighlyenantioselective intermolecular [4 + 2] cycloaddition is shown with ynones and cyclohexadiene. Various bicyclo[2.2.2]octadiene derivatives are produced in high yields (up to 99%) with good enantioselectivity (up to 96% ee). Key to the success is generation of the gem-digold terminal alkyne as a catalytic on-cycle species. As proof of the gem-digold catalysis, a positive nonlinear