Gold-catalyzed oxidation of terminal alkynes to glyoxals and their reactions with 2-phenylimidazo[1,2-<i>a</i>]pyridines: one-pot synthesis of 1,2-diones
作者:Shengrong Liao、Huayan Xu、Bin Yang、Junfeng Wang、Xuefeng Zhou、Xiuping Lin、Yonghong Liu
DOI:10.1039/d1ob01507a
日期:——
A novel one-pot protocol for the convenient and efficient synthesis of (2-phenylimidazo[1,2-a]pyridin-3-yl)alkane-1,2-diones (3) in good yields (32–88%) from 2-phenylimidazo[1,2-a]pyridines (1) and terminalalkynes (2) has been established with a wide range of substrate scope. A tandem reaction sequence containing gold-catalyzed double oxidations of terminalalkynes to generate glyoxals, nucleophilic
一种新颖的一锅法,可方便有效地合成 (2-苯基咪唑并[1,2- a ]吡啶-3-基)烷烃-1,2-二酮 ( 3 ),产率 (32–88%) 2-苯基咪唑并[1,2- a ]吡啶( 1 )和末端炔烃( 2 )已被建立,具有广泛的底物范围。串联反应序列包含金催化末端炔烃的双氧化以生成乙二醛,将 2-苯基咪唑并[1,2- a ]吡啶亲核加成到乙二醛以生成 α-羟基酮,以及将 α-羟基酮氧化以提供最终产品3该方法涉及在空气气氛下。简单的操作、温和的反应条件和广泛可用的底物使这种策略更实惠。
AMIDE COMPOUNDS
申请人:Kitamura Shuji
公开号:US20120065196A1
公开(公告)日:2012-03-15
The present invention provides compounds represented by the formula (Ie):
and the formula (If):
wherein each symbol is as defined in the specification.
According to the present invention, these compounds have a DGAT inhibitory activity and are useful for the prophylaxis, treatment or improvement of diseases or pathologies caused by high expression or high activation of DGAT.
(EN) The present invention provides compounds represented by the formula (Ie) and the formula (If) wherein each symbol is as defined in the specification. According to the present invention, these compounds have a DGAT inhibitory activity and are useful for the prophylaxis, treatment or improvement of diseases or pathologies caused by high expression or high activation of DGAT.(FR) La présente invention concerne des composés représentés par la formule (Ie) ou la formule (If) dans lesquelles chaque symbole est tel que défini dans le mémoire descriptif. Selon la présente invention, ces composés ont une activité inhibitrice de la DGAT et ils sont utilisables pour la prophylaxie, le traitement ou l'amélioration de maladies ou de pathologies causées par la sur-expression ou la sur-activation de la DGAT.