合成了具有吗啉/苯基哌嗪部分的新型吡喃并[3,2- c ]亚甲基衍生物,并针对乙酰胆碱酯酶(AChE)和丁基胆碱酯酶(BuChE)进行了评估。在合成的化合物中,N-(3-氰基-4-(4-甲氧基苯基)-5-氧代-4,5-二氢吡喃并[3,2 - c ]铬-2-基)-2-(4-苯基哌嗪- 1-yl)乙酰胺(6c)表现出最高的乙酰胆碱酯酶抑制(AChEI)活性(IC 50 = 1.12 µM),其中大多数表现出中等的丁基胆碱酯酶抑制活性(BChEI)。化合物6c的动力学研究证实了对AChE的混合抑制类型,这与对接研究的结果一致。此外,还针对β进行了评估-分泌酶,其活性低(抑制率:18%)。应该注意的是,化合物6c,7b,6g和7d对H 2 O 2诱导的PC12氧化应激表现出明显的神经保护作用。
One-pot synthesis of 2-amino-3-cyano-4<i>H</i>-pyrans and pyran-annulated heterocycles using sodium citrate as an organo-salt based catalyst in aqueous ethanol
作者:Aiborlang Thongni、Pynskhemborlang T. Phanrang、Arup Dutta、Rishanlang Nongkhlaw
DOI:10.1080/00397911.2021.1998535
日期:2022.1.2
shorter reaction time, utilization of eco-friendly solvents, operational simplicity, mild reaction conditions, and maximum product yield. Moreover, the use of sodium citrate as an easily available, cheap and benign catalyst plays a pivotal role from a green perspective, considering its high recyclability and easy recovery. Therefore, this present methodology offers numerous possibilities in terms of large-scale
Synthesis of a SO3H-bearing carbonaceous solid catalyst, PEG–SAC: application for the easy access to a diversified library of pyran derivatives
作者:Sanjay Paul、Sirshendu Ghosh、Pranabes Bhattacharyya、Asish R. Das
DOI:10.1039/c3ra42352b
日期:——
A SO3H-bearing carbonaceous solid catalyst (PEG–SAC) has been synthesized through sulfonation followed by a hydrothermal carbonization method from renewable resources like polyethylene glycol. The biodegradable catalyst was characterized by XRD, TEM, FT-IR and EDX. The surface area and pore diameter of the catalyst were determined from a nitrogen adsorption–desorption isotherm experiment. A highly
DBU: a highly efficient catalyst for one-pot synthesis of substituted 3,4-dihydropyrano[3,2-c]chromenes, dihydropyrano[4,3-b]pyranes, 2-amino-4H-benzo[h]chromenes and 2-amino-4H benzo[g]chromenes in aqueous medium
作者:Jitender M. Khurana、Bhaskara Nand、Pooja Saluja
DOI:10.1016/j.tet.2010.05.082
日期:2010.7
We have reported DBU catalyzedone-potsynthesis of 3,4-dihydropyrano[3,2-c]chromenes, dihydropyrano[4,3-b]pyranes, 2-amino-4H-benzo[h]chromenes and 2-amino-4H-benzo[g]chromenes from aldehydes, active methylene compounds malononitrile/ethyl cyanocacetate, and 4-hydroxycoumarin/4-hydroxy-6-methylpyrone/1-naphthol/2-hydroxynaphthalene-1,4-dione in water under reflux. The attractive features of this process
我们已经报道了DBU催化一锅合成3,4-二氢吡喃并[3,2- c ]苯并二氢吡喃并[4,3- b ]吡喃,2-氨基-4 H-苯并[ h ]苯并二胺回流下得自醛,活性亚甲基化合物丙二腈/氰基乙酸乙酯和4-羟基香豆素/ 4-羟基-6-甲基吡喃酮/ 1-萘酚/ 2-羟基萘-1,4-二酮的-4 H-苯并[ g ]色酮。该方法的吸引人的特征是温和的反应条件,反应介质的可重复使用性,较短的反应时间,易于分离的产物以及优异的产率。
Mono- and Bis-2-amino-4H-pyrans: Alum Catalyzed Three- or Pseudo Five-Component Reaction of 4-Hydroxycoumarin, Malononitrile and Aldehydes
作者:Ali Reza Karimi、Cyrus Eslami
DOI:10.2174/157017811794697421
日期:2011.2.1
An efficient method for the three- or pseudofive-componentsynthesis of mono- and bis-2-amino-4H-pyrans in excellent yields using Alum (KAl(SO4)2.12H2O) as recyclable catalyst is described. The present methodology offers several advantages such as excellent yields, simple procedures, shorter reaction times, milder conditions and the catalysts exhibited remarkable reusable activity.
New Coumarin Derivatives as Anti-Breast and Anti-Cervical Cancer Agents Targeting VEGFR-2 and p38α MAPK
作者:Rasha Z. Batran、Dina H. Dawood、Samia A. El-Seginy、Mamdouh M. Ali、Timothy J. Maher、Kuljeet S. Gugnani、Alejandro N. Rondon-Ortiz
DOI:10.1002/ardp.201700064
日期:2017.9
compounds showed potent preferential inhibition effects against human VEGFR‐2 and remarkable anticancer activities in the human breast cancer cell line MCF‐7. Compounds 29, 24, and 2 displayed the highest inhibitory activity against VEGFR‐2 (94% inhibition) and they were the most potent anticancer agentstowardMCF‐7 cancer cells with IC50 values of 7.90, 8.28, and 8.30 μg/mL, respectively. Compound 13