Corynomycolic acid-containing glycolipids signal through the pattern recognition receptor Mincle
作者:Phillip L. van der Peet、Christian Gunawan、Shota Torigoe、Sho Yamasaki、Spencer J. Williams
DOI:10.1039/c5cc00085h
日期:——
Glucose monocorynomycolate is revealed to signal through both mouse and human Mincle. Glycerol monocorynomycolate is shown to selectively signal through human Mincle, with the activity residing predominantly in the 2′S-isomer.
Highly Diastereoselective Chelation-Controlled Additions to α-Silyloxy Ketones
作者:Gretchen R. Stanton、Gamze Koz、Patrick J. Walsh
DOI:10.1021/ja201629d
日期:2011.5.25
predict that the addition of organometallic reagents to silyl-protected α-hydroxy ketones proceeds via a nonchelation pathway to give anti-diol addition products. This prediction has held true for the vast majority of additions reported in the literature, and few methods for chelation-controlled additions of organometallic reagents to silyl-protected α-hydroxy ketones have been introduced. Herein, we present
Highly Diastereoselective Intramolecular Asymmetric Oxidopyrylium-olefin [5 + 2] Cycloaddition and Synthesis of 8-Oxabicyclo[3.2.1]oct-3-enone Containing Ring Systems
作者:Arun K. Ghosh、Monika Yadav
DOI:10.1021/acs.joc.1c00600
日期:2021.6.18
asymmetric intramolecular oxidopyrylium-alkene [5 + 2]-cycloaddition reaction which resulted in the synthesis of functionalized tricyclic ring systems containing an 8-oxabicyclo[3.2.1]octane core. Intramolecular cycloaddition constructed two new rings, three new stereogenic centers, and provided a tricyclic cycloadduct with high diastereoselectivity and isolated yield. We incorporated an α-chiral center
Stereocontrolled total synthesis of (+)-concanamycin F: the strategic use of boron-mediated aldol reactions of chiral ketones
作者:Ian Paterson、Victoria A. Steadman neé Doughty、Malcolm D. McLeod、Thomas Trieselmann
DOI:10.1016/j.tet.2011.09.012
日期:2011.12
cross-coupling reaction between the C1–C13 vinyl iodide and C14–C22 vinyl stannane fragments to assemble the (12E,14E)-diene, a modified Yamaguchi macrolactonisation delivered the requisite 18-membered macrocyclic core. This advanced intermediate was also obtained by an alternative sequence using an esterification step to connect the C1–C13 and C14–C22 fragments followed by a Pd-catalysed intramolecular
Design, Synthesis and Biological Evaluation of Highly Potent Simplified Archazolids
作者:Solenne Rivière、Christin Vielmuth、Christiane Ennenbach、Aliaa Abdelrahman、Carina Lemke、Michael Gütschow、Christa E. Müller、Dirk Menche
DOI:10.1002/cmdc.202000154
日期:2020.7.20
agents. Their complex macrolide structures and scarce natural supply make the development of more readily available analogues highly important. Herein, we report the design, synthesis and biological evaluation of four simplified and partially saturated archazolid derivatives. We also reveal important structure‐activity relationship data as well as insights into the pharmacophore of these complex polyketides