C–H Alkenylation of Heteroarenes: Mechanism, Rate, and Selectivity Changes Enabled by Thioether Ligands
作者:Bradley J. Gorsline、Long Wang、Peng Ren、Brad P. Carrow
DOI:10.1021/jacs.7b03887
日期:2017.7.19
catalytic intermediate in these reactions may also account for unusual catalyst-controlled site selectivity wherein C–H alkenylation of five-atom heteroarenes can occur under electronic control with thioether ligands even when this necessarily involves reaction at a more hindered C–H bond. The thioether effect also enables short reaction times under mild conditions for many O-, S-, and N-heteroarenes (55 examples)
Salphen metal complexes as tunable G-quadruplex binders and optical probes
作者:Nurul H. Abd Karim、Oscar Mendoza、Arun Shivalingam、Alexander J. Thompson、Sushobhan Ghosh、Marina K. Kuimova、Ramon Vilar
DOI:10.1039/c3ra44793f
日期:——
A series of seven new metal complexes (metal = NiII, CuII, PtII and VO2+) with substituted salphen ligands have been prepared and their duplex and G-quadruplex DNA affinities determined. The selectivity of the complexes towards a given DNA topology is dictated by several factors including geometry, overall charge and substitution pattern of the complex. We also show that the two platinum(II)–salphen complexes developed as part of this series are emissive. Confocal microscopy studies were carried out with these two complexes using four different cell lines (CHO, HeLa, U2OS and HepG2). These studies showed that the cell permeability and localization are different for the two probes and highly dependent on the cell line used.
New alkyl derivatives phosphine sulfonate (P–O) ligands. Catalytic activity in Pd-catalysed Suzuki–Miyaura reactions in water
作者:Eduardo J. García Suárez、Aurora Ruiz、Sergio Castillón、Werner Oberhauser、Claudio Bianchini、Carmen Claver
DOI:10.1039/b707590c
日期:——
Two novel bis(o-methoxyphenyl) phosphinoalkylsulfonate (PâO) ligands have been prepared through a new and sustainable synthetic route; they are air stable as well as water soluble and have been applied in Pd-catalysed SuzukiâMiyaura cross-coupling reactions in neat water in conjunction with microwave heating.
Discovery of a Highly Potent, Nonabsorbable Apical Sodium-Dependent Bile Acid Transporter Inhibitor (GSK2330672) for Treatment of Type 2 Diabetes
作者:Yulin Wu、Christopher J. Aquino、David J. Cowan、Don L. Anderson、Jeff L. Ambroso、Michael J. Bishop、Eric E. Boros、Lihong Chen、Alan Cunningham、Robert L. Dobbins、Paul L. Feldman、Lindsey T. Harston、Istvan W. Kaldor、Ryan Klein、Xi Liang、Maggie S. McIntyre、Christine L. Merrill、Kristin M. Patterson、Judith S. Prescott、John S. Ray、Shane G. Roller、Xiaozhou Yao、Andrew Young、Josephine Yuen、Jon L. Collins
DOI:10.1021/jm400459m
日期:2013.6.27
of ASBT inhibitors for treatment of type 2 diabetes has been relatively unexplored. We initiated a lead optimization effort that focused on the identification of a potent, nonabsorbable ASBT inhibitor starting from the first-generation inhibitor 264W94 (1). Extensive SARstudies culminated in the discovery of GSK2330672 (56) as a highly potent, nonabsorbable ASBT inhibitor which lowers glucose in an
Structure stability/activity relationships of sulfone stabilized N,N-dichloroamines
作者:Eddy Low、Bum Kim、Charles Francavilla、Timothy P. Shiau、Eric D. Turtle、Donogh J.R. O’Mahony、Nichole Alvarez、Ashley Houchin、Ping Xu、Meghan Zuck、Chris Celeri、Mark B. Anderson、Ramin (Ron) Najafi、Rakesh K. Jain
DOI:10.1016/j.bmcl.2011.04.084
日期:2011.6
Structure stability/activity relationships (SXR) of a new class of N,N-dichloroamine compounds were explored to improve antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Candida albicans while maintaining aqueous solution stability. This study identified a new class of solution-stable and topical antimicrobial agents. These agents are sulfone-stabilized and possess either