Influence of 2-Substituent on the Activity of Imidazo[1,2-a] Pyridine Derivatives Against Human Cytomegalovirus
摘要:
The synthesis of various 2-substituted imidazo[1,2-a]pyridine bearing a thioether side chain in position 3 was reported. The new compounds were characterized by H-1 and C-13 NMR spectra. A conformational study was obtained by X-ray crystallographic analysis for 2-biphen-4-ylimidazopyridine 7. The antiviral activity against human cytomegalovirus (HCMV) was investigated. It was strongly influenced by the nature of C-2 substituent. (C) 2002 Elsevier Science Ltd. All rights reserved.
与众所周知的钯催化的氧化脱氢偶联反应相比,由铜/氧引发的类似转化越来越受到关注。我们研究了通过芳基烷基或烷基烷基酮与2-氨基吡啶的碘化亚铜(I)/三氟化硼醚化物/氧介导的脱氢反应,研究杂芳族咪唑并[1,2- a ]吡啶的新型结构。通过亚胺的形成和氧化性C(sp 3)H官能化一步除去四个氢原子并形成两个新的CN键。
The present invention provides a compound of Formula (I)
or a pharmaceutically salt thereof wherein R
1
, R
2
, Ra, L, Z, Z
1
and Z
2
are as defined herein, that act as Ghrelin antagonists or inverse agonists; pharmaceutical compositions thereof; and methods of treating diseases, disorders, or conditions mediated by the antagonism of the Ghrelin receptor.
A Carbonylation Approach Toward Activation of C<sub>sp2</sub>-H and C<sub>sp3</sub>-H Bonds: Cu-Catalyzed Regioselective Cross Coupling of Imidazo[1,2-<i>a</i>]pyridines with Methyl Hetarenes
作者:Sai Lei、Yingying Mai、Caijuan Yan、Jianwen Mao、Hua Cao
DOI:10.1021/acs.orglett.6b01588
日期:2016.8.5
An efficient copper-catalyzed selective cross coupling of imidazo[1,2-a]pyridines with methyl hetarenes has been reported. This transformation opened a new route to synthesize the C-3 carbonyl imidazo[1,2-a]pyridine derivative, which is a common structural motif in natural products and pharmaceuticals. 18O-labeling experiments indicated that the oxygen source of products originated from O2.
已经报道了咪唑并[1,2- a ]吡啶与甲基己烯的有效铜催化选择性交叉偶联。这种转变为合成C-3羰基咪唑并[1,2- a ]吡啶衍生物开辟了一条新途径,该衍生物是天然产物和药物中常见的结构基序。18 O-标记实验表明产物的氧源来自O 2。
Regioselective copper-catalyzed thiolation of imidazo[1,2-a]pyridines: an efficient C–H functionalization strategy for C–S bond formation
Organic chemists are continuously searching for the chemical reaction in non-hazardous conditions to minimize the generation of hazardous substances in the environment [1]. Water is the ideal solvent for chemical reaction as it is safe and environmental friendly [1,2]. But, in general, its use is limited in chemical reactions because most of the organic compounds are either insoluble or unstable [3]
Regioselective Copper-Catalyzed Oxidative Cross-Coupling of Imidazo[1,2-<i>a</i>]pyridines with Methyl Ketones: An Efficient Route for Synthesis of 1,2-Diketones
作者:Sai Lei、GuiJun Chen、Yingying Mai、Longbin Chen、Huiyin Cai、Jingwen Tan、Hua Cao
DOI:10.1002/adsc.201500803
日期:2016.1.7
An efficientcopper‐catalyzedoxidativecoupling of imidazo[1,2‐a]pyridines with methyl ketones to directly generate structurally sophisticated 1,2‐dicarbonyl imidazo[1,2‐a]pyridine derivatives under oxidative conditions is described. The reaction proceeds in good yields using the environmental friendly molecular oxygen as the oxidant. 18O‐Labelling experiments unambiguously established that the oxygen
描述了咪唑并[1,2- a ]吡啶与甲基酮的有效铜催化氧化偶联,可在氧化条件下直接生成结构复杂的1,2-二羰基咪唑并[1,2- a ]吡啶衍生物。使用环境友好的分子氧作为氧化剂,反应以良好的产率进行。18 O-Labelling实验明确地确定了二羰基产物中的氧气源自氧气而不是水。