aminolysis reaction between various aryl esters and inert tertiaryamines by C–O and C–N bond activations has been developed for the selective synthesis of a broad scope of tertiary amides under neutral and mild conditions. The mechanism may undergo the two key steps of oxidativeaddition of acyl C–O bond in parent ester and C–N bond cleavage of tertiaryamine via an iminium-type intermediate.
Transesterification for Synthesis of Carboxylates Using Aldehydes as Acyl Donors via C–H and C–O Bond Activations
作者:Yong-Sheng Bao、Chao-Yue Chen、Zhi-Zhen Huang
DOI:10.1021/jo3012573
日期:2012.9.21
A new type of transesterification between aryl, heteroaryl, alkyl N-heteroarene-2-carboxylates and various aldehydes by C–H and C–O bondactivations has been developed for the synthesis of versatile carboxylates. A possible mechanism containing oxidative addition of acyl–O bond in parent ester and radical cleavage of sp2 C–Hbond in aldehyde is proposed.
Catalyzed by supported palladium nanoparticles, a decarbonylative amidation reaction between various aryl esters and formamides by C-O bond activation has been developed for the synthesis of amides.
BIOAVAILABLE DIACYLHYDRAZINE LIGANDS FOR MODULATING THE EXPRESSION OF EXOGENOUS GENES VIA AN ECDYSONE RECEPTOR COMPLEX
申请人:Hormann Eugene Robert
公开号:US20080064741A1
公开(公告)日:2008-03-13
The present invention relates to non-steroidal ligands for use in nuclear receptor-based inducible gene expression system, and a method to modulate exogenous gene expression in which an ecdysone receptor complex comprising: a DNA binding domain; a ligand binding domain; a transactivation domain; and a ligand is contacted with a DNA construct comprising: the exogenous gene and a response element; wherein the exogenous gene is under the control of the response element and binding of the DNA binding domain to the response element in the presence of the ligand results in activation or suppression of the gene.
Bioavailable Diacylhydrazine Ligands for Modulating the Expression of Exogenous Genes via an Ecdysone Receptor Complex
申请人:HORMANN Robert Eugene
公开号:US20120046322A1
公开(公告)日:2012-02-23
The present invention relates to non-steroidal ligands for use in nuclear receptor-based inducible gene expression system, and a method to modulate exogenous gene expression in which an ecdysone receptor complex comprising: a DNA binding domain; a ligand binding domain; a transactivation domain; and a ligand is contacted with a DNA construct comprising: the exogenous gene and a response element; wherein the exogenous gene is under the control of the response element and binding of the DNA binding domain to the response element in the presence of the ligand results in activation or suppression of the gene.