作者:Lijun Lu、Renyi Shi、Luyao Liu、Jingwen Yan、Fangling Lu、Aiwen Lei
DOI:10.1002/chem.201602791
日期:2016.10.4
compounds is an attractive prospect in organic synthesis. In particular, the combination of C(sp3)−H activation and oxidative carbonylation involving alkanes and CO gas is a promising and efficient method to synthesize carbonyl derivatives. However, due to the high C−H bond dissociation energy and low polarity of unactivated alkanes, the carbonylation of unactivated C(sp3)−H bonds still remains a great challenge
Metal-free, visible-light-mediated, decarboxylative alkylation of biomass-derived compounds
作者:Johanna Schwarz、Burkhard König
DOI:10.1039/c6gc01101b
日期:——
This work describes a mild, environmentally friendly method to activate natural carboxylic acids for decarboxylativealkylation. After esterification of biomass-derived acids to N-(acyloxy)phthalimides, the active esters are cleaved reductively by...
[EN] A CONJUGATE OF AN AMANITA TOXIN WITH BRANCHED LINKERS<br/>[FR] CONJUGUÉ D'UNE TOXINE D'AMANITE AVEC DES LIEURS RAMIFIÉS
申请人:HANGZHOU DAC BIOTECH CO LTD
公开号:WO2020155017A1
公开(公告)日:2020-08-06
Provided herein is the conjugation of an amanita toxin compound to a cell-binding molecule with branched linkers for having better targeted treatment of abnormal cells. It also relates to a branched-linkage method of conjugation of an amanita molecule to a cell-binding ligand, as well as methods of using the conjugate in targets treatment of cancer, infection and autoimmune disease.
Copper-Catalyzed Alkoxycarbonylation of Alkanes with Alcohols
作者:Yahui Li、Changsheng Wang、Fengxiang Zhu、Zechao Wang、Pierre H. Dixneuf、Xiao-Feng Wu
DOI:10.1002/cssc.201601587
日期:2017.4.10
Esters are important chemicals widely used in various areas, and alkoxycarbonylation represents one of the most powerful tools for their synthesis. In this communication, a new copper‐catalyzed carbonylative procedure for the synthesis of aliphatic esters from cycloalkanes and alcohols was developed. Through direct activation of the C −H bond of alkanes and with alcohols as the nucleophiles, the desired
Zn-Promoted Regioselective and Sequence-Selective One-Pot Joining Reaction of Three Components: Alkyl Iodides, α,β-Unsaturated Esters (or Nitriles), and Acylating Agents
iodides, alpha,beta-unsaturated esters (or nitriles), and acylating agents such as nitriles or acid anhydrides in the presence of Zn metal at room temperature in the same reaction system brought about a regioselective and sequence-selective three-component joining reaction involving first C-alkylation at the beta-position and second C-acylation at the alpha-position of alpha,beta-unsaturated esters (or