[EN] EXPANDED THERAPEUTIC POTENTIAL IN NITROHETEROARYL ANTIMICROBIALS<br/>[FR] POTENTIEL THÉRAPEUTIQUE ÉTENDU DANS DES ANTIMICROBIENS À NITROHÉTÉROARYLE
申请人:UNIV CALIFORNIA
公开号:WO2014205414A1
公开(公告)日:2014-12-24
Disclosed herein are antimicrobial compounds compositions, pharmaceutical compositions, the use and preparation thereof. Some embodiments relate to imidazole, thiazole, and furan derivatives and their use as therapeutic agents.
Au<sub>2</sub>O<sub>3</sub> as a Stable and Efficient Catalyst for the Selective Cycloisomerization of γ-Acetylenic Carboxylic Acids to γ-Alkylidene-γ-Butyrolactones
The high potential of commercially available Au2O3 as a catalyst in the cyclization of alkynes bearing carboxylic acids to the corresponding γ-alkylidene-γ-butyrolactones through a general, efficient and easy procedure is presented. The reaction shows a high degree of chemo-, regio-, and stereoselectivity. The 5-exo mode of cyclization and anti auration are a general trend for the Au2O3 catalyst.
developed capitalizing on a direct pyridine-type nitrogen quaternization followed by metal-catalyzed [2+2+2] cycloaddition with gaseous acetylene. The flexibility of the route is demonstrated on 12 diverse scaffolds based on pyridinium, quinolinium, thiazolium, benzothiazolium, imidazolium, and pyrimidinium. Electrochemical study revealed a quinolinium redox system with two electrochemically distinct forms
The reaction of unactivated secondary and primary alkyl chlorides as well as primary alkyl triflates with silyl lithium reagents to access tetraorganosilanes is reported. These nucleophilic substitutions proceed in the absence of any transition metal catalyst under mild conditions in moderate to very good yields. The silyl lithium reagents are readily generated from the corresponding commercially available
Helquats: A Facile, Modular, Scalable Route to Novel Helical Dications
作者:Louis Adriaenssens、Lukáš Severa、Tereza Šálová、Ivana Císařová、Radek Pohl、David Šaman、Silvia V. Rocha、Nathaniel S. Finney、Lubomír Pospíšil、Petr Slavíček、Filip Teplý
DOI:10.1002/chem.200801904
日期:2009.1.19
As easy as one, two, three: Relying on a facile [2+2+2]‐cycloisomerization strategy, we have developed a robust three‐step synthetic entry into a novel family of helical extended diquats (helquats). The key metal‐catalyzed step proceeds in water under aerobic conditions to produce a water‐soluble, blue fluorophore (picture; TfO=triflate). The electrochemical manifold of the parent helquat features