Diastereoselectivity in an electrocyclization reaction of cyclopentadienones
摘要:
Two cyclopentadienones were generated and both underwent conrotatory electrocyclization as expected based on Woodward-Hoffmann rules. This result lends support to the idea that these ring-closing reactions are, in fact, pericyclic processes. (c) 2007 Elsevier Ltd. All rights reserved.
在研究 le comportement thermique et photochimique d'une serie de l'o-alcenylphenyl-3 cyclopropenes substitues。La 热解 l'o-propenylphenyl-3 cyclopropene substitue trans导管 au cycloadduit [2+2] alors que l'isomere cis subitune 反应烯
Various C–C and C‐X bonds could be formed by doublefunctionalization of olefins featuring Cu‐mediated assistedtandemcatalysis. Furthermore, one‐pot indoline syntheses with o‐bromostyrenes as an application could be achieved.
[EN] KRAS G12D INHIBITORS<br/>[FR] INHIBITEURS DE KRAS G12D
申请人:MIRATI THERAPEUTICS INC
公开号:WO2021041671A1
公开(公告)日:2021-03-04
The present invention relates to compounds that inhibit KRas G12D. In particular, the present invention relates to compounds that inhibit the activity of KRas G12D, pharmaceutical compositions comprising the compounds and methods of use therefor.
[EN] BENZODIOXEPINE AND BENZODIOXINE COMPOUNDS THAT INTERACT WITH GLUCOKINASE REGULATORY PROTEIN FOR THE TREATMENT OF DIABETES<br/>[FR] BENZODIOXÉPINE ET COMPOSÉS DE BENZODIOXINE QUI INTERAGISSENT AVEC LA PROTÉINE RÉGULATRICE DE LA GLUCOKINASE POUR LE TRAITEMENT DU DIABÈTE
申请人:AMGEN INC
公开号:WO2012138776A1
公开(公告)日:2012-10-11
The present invention relates to compounds of formula I or II, or pharmaceutically acceptable salts thereof, that interact with glucokinase regulatory protein. In addition, the present invention relates to methods of treating type 2 diabetes, and other diseases and/or conditions where glucokinase regulatory protein is involved using the compounds, or pharmaceutically acceptable salts thereof, and pharmaceutical compositions that contain the compounds, or pharmaceutically acceptable salts thereof.
Unequivocal Experimental Evidence for a Unified Lithium Salt-Free Wittig Reaction Mechanism for All Phosphonium Ylide Types: Reactions with β-Heteroatom-Substituted Aldehydes Are Consistently Selective for<i>cis</i>-Oxaphosphetane-Derived Products
作者:Peter A. Byrne、Declan G. Gilheany
DOI:10.1021/ja300943z
日期:2012.6.6
erythro-β-hydroxyphosphonium salt) in reactions involving aldehydes bearing heteroatom substituents in the β-position. The effect operates with both benzaldehydes and aliphatic aldehydes and is shown not to operate in the absence of the heteroatom substituent on the aldehyde. The discovery of an effect that is common to reactions of all ylide types strongly argues for the operation of a common mechanism in all Li
Investigations on the Operation of Stereochemical Drift in the Wittig Reaction by NMR and Variable-Temperature NMR Spectroscopy of Oxaphosphetane Intermediates and Their Quench Products
作者:Peter A. Byrne、Jimmy Muldoon、Yannick Ortin、Helge Müller-Bunz、Declan G. Gilheany
DOI:10.1002/ejoc.201301103
日期:2014.1
stereochemical drift occurs in the formation of the alkene product. An alternative mechanism for drift involving its catalysis by aldehyde was not confirmed. Drift was also shown not to occur in similar Wittig reactions of structurally related longer-chain alkylides by stereospecificdecomposition of OPA intermediates generated from β-hydroxyphosphonium salts (β-HPSs). The extremely useful (and generally applicable)