Synthesis and Biological Evaluation of Quinoline Salicylic Acids As P-Selectin Antagonists
作者:Neelu Kaila、Kristin Janz、Silvano DeBernardo、Patricia W. Bedard、Raymond T. Camphausen、Steve Tam、Desirée H. H. Tsao、James C. Keith、Cheryl Nickerson-Nutter、Adam Shilling、Ruth Young-Sciame、Qin Wang
DOI:10.1021/jm0602256
日期:2007.1.1
junctions into the underlying tissue. The initial rolling step is mediated by the interaction of leukocyte glycoproteins containing active moieties such as sialylLewisx (sLex) with P-selectin expressed on endothelial cells. Consequently, inhibition of this interaction by means of a small molecule P-selectin antagonist is an attractive strategy for the treatment of inflammatory diseases such as arthritis
Decarboxylative Oxyacyloxylation of Propiolic Acids: Construction of Alkynyl-Containing α-Acyloxy Ketones
作者:Xin Chen、Yangchun Xin、Zhi-Wei Zhao、Yu-Jian Hou、Xiang-Xiang Wang、Wen-Jin Xia、Ya-Min Li
DOI:10.1021/acs.joc.1c00669
日期:2021.6.18
Novel decarboxylative oxyacyloxylation of propiolic acids has been developed. This reaction provides an efficient access to alkynyl-containing α-acyloxy ketones from readily available starting materials and exhibits significant functional group tolerance. Furthermore, oxyacyloxylation of terminal alkynes and aliphatic propiolic acids was also developed. A possible reaction mechanism is proposed based
is a fundamental concept in organic chemistry, which provides an alternative strategy for the synthesis of target compounds which were not easily accessible by conventional methods. Herein, a mild and efficient PhI(OAc)2-promoted umpolung acetoxylation reactions of enamides was developed for the synthesis of α-acetoxy ketones. The reaction tolerates a wide range of functional groups and affords α-acetoxy
The reaction of terminal alkynes with PhI(OAc)2: a convenient procedure for the preparation of α-acyloxy ketones
作者:Dong-Liang Mo、Li-Xin Dai、Xue-Long Hou
DOI:10.1016/j.tetlet.2009.07.081
日期:2009.10
Treatment of terminal alkynes with PhI(OAc)(2) in different acids at 70 degrees C provided the corresponding alpha-acyloxy ketones in good to excellent yields. A plausible mechanism has been proposed based on the experimental results. (C) 2009 Elsevier Ltd. All rights reserved.
Novel and efficient transformation of enamides into α-acyloxy ketones via an acyl intramolecular migration process
Hydrogen peroxide and anhydride mediated transformation of enamides to afford substituted α-acyloxy ketones is described. This transition-metal-free cascade reaction has a broad substrate scope and high efficiency. The acyl intramolecular migration procedure successfully achieved this acyloxylation process under mild conditions and increased the atom efficiency.