Quinic Acid Derivatives as Sialyl Lewisx-Mimicking Selectin Inhibitors: Design, Synthesis, and Crystal Structure in Complex with E-Selectin
摘要:
A search for noncarbohydrate sLe(x) mimics led to the development of quinic acid derivatives as selectin inhibitors. At Wyeth we solved the first cocrystal structure of a small molecule, quinic acid, with E-selectin. In the cocomplex two hydroxyls of quinic acid mimic the calcium-bound fucose of the tetrasaccharide sLe(x). The X-ray structure, together with structure based computational methods, was used to design quinic acid based libraries that were synthesized and evaluated for their ability to block the interaction of sLex with P-selectin. A large number of analogues were prepared using solution-phase parallel synthesis. Selected compounds showed decrease in leukocyte rolling in the IVM mouse model. Compound 2 inhibited neutrophil influx in the murine TIP model and demonstrated good plasma exposure.
Regiospecific Synthesis of Substituted 2-Nitrobenzaldehydes from Benzaldehydes through Palladium-Catalyzed Chelation-Assisted C-H Nitration
作者:Wei Zhang、Degui Wu、Jian Zhang、Yunkui Liu
DOI:10.1002/ejoc.201402451
日期:2014.9
A regiospecific synthesis of substituted 2-nitrobenzaldehydes from substituted benzaldehydes has been developed that involves a three-step process with palladium-catalyzed chelation-assisted C–H nitration as the key step. In the process, O-methyl aldoxime serves as a removable directing group for the palladium-catalyzed ortho-nitration of substituted benzaldoximes and it can be removed in subsequent
[EN] COMPOUNDS WHICH MODULATE PPARgamma TYPE RECEPTORS, AND USE THEREOF IN COSMETIC OR PHARMACEUTICAL COMPOSITIONS<br/>[FR] NOUVEAUX COMPOSES MODULATEURS DES RECEPTEURS DE TYPE PPAR DOLLAR G(G), ET LEUR UTILISATION DANS DES COMPOSITIONS COSMETIQUES OU PHARMACEUTIQUES
申请人:GALDERMA RES & DEV
公开号:WO2004052840A1
公开(公告)日:2004-06-24
The invention relates to novel compounds that correspond to the general formula (I) below and to a method for preparing them, and to their use in pharmaceutical compositions intended for use in human or veterinary medicine (in dermatology, and also in the field of cardiovascular diseases, immune diseases and/or diseases associated with lipid metabolism), or alternatively in cosmetic compositions.
Boronic esters have long been considered as poor partners in cross-coupling reactions with arene diazoniums. Here is reported an unprecedented application of self-activated boronic esters in a base-free cross-coupling reaction with diazonium salts under mild and user friendly conditions.
A diarylethene annulated isomer as a highly-conductive molecular wire evaluated by the exchange interaction between two nitroxides
作者:Youki Sumiya、Kenji Higashiguchi、Kenji Matsuda
DOI:10.1039/c9cc10017b
日期:——
Bis(imino nitroxide) bridged by a diarylethene annulated isomer was found to show a strong exchange interaction, suggesting the use of the annulated isomer as a highly-conductive molecular wire.