Facile one-pot synthesis of 2,3-thienoimides via formal [3+2] annulation reaction of 1,4-dithiane-2,5-diol and N -substituted imides
摘要:
A formal [3+2] annulation reaction of 1,4-dithiane-2,5-diol and N-substituted imides through one-pot metal-free strategy has been developed. This method could furnish 2,3-thienoimides in good to high yields. (C) 2015 Elsevier Ltd. All rights reserved.
Isatin <i>N</i>,<i>N</i>′-Cyclic Azomethine Imine 1,3-Dipole and Abnormal [3 + 2]-Cycloaddition with Maleimide in the Presence of 1,4-Diazabicyclo[2.2.2]octane
作者:Xiao Wang、Peng Yang、Yong Zhang、Chao-Zhe Tang、Fang Tian、Lin Peng、Li-Xin Wang
DOI:10.1021/acs.orglett.6b03815
日期:2017.2.3
A new isatin N,N′-cyclic azomethine imine synthon was devised, and an unexpected abnormal [3 + 2]-cycloaddition with maleimide catalyzed by 1,4-diazabicyclo[2.2.2]octane (DABCO) has been disclosed. A variety of tricyclic spiropyrrolidine oxindoles bearing a dinitrogen heterocycle and succinimide scaffold were obtained in excellent yields (up to 96%) and diastereoselectivities (up to 97:3) under mild
Synthesis and in Vitro Evaluation of N-Substituted Maleimide Derivatives as Selective Monoglyceride Lipase Inhibitors
作者:Nicolas Matuszak、Giulio G. Muccioli、Geoffray Labar、Didier M. Lambert
DOI:10.1021/jm900461w
日期:2009.12.10
action is quickly terminated via enzymatic hydrolysis catalyzed by monoglyceride lipase (MGL). Regulating its endogenous level could offer therapeutic opportunities; however, few selective MGL inhibitors have been described so far. Here, we describe the synthesis of N-substituted maleimides and their pharmacological evaluation on the recombinant human fatty acid amide hydrolase (FAAH) and on the purified
内源性大麻素2-花生四烯酸甘油酯(2-AG)在许多生理过程中起着重要作用,其作用通过甘油单酯脂肪酶(MGL)催化的酶促水解迅速终止。调节其内源水平可以提供治疗机会;然而,到目前为止,几乎没有描述选择性的MGL抑制剂。在这里,我们描述了N-取代的马来酰亚胺的合成及其对重组人脂肪酸酰胺水解酶(FAAH)和纯化人MGL的药理评价。先前已经描述了一些N-芳基马来酰亚胺(萨里奥(SM);萨洛(OM);Nevalainen,T .;Poso,A。莱蒂宁(JT);贾文恩(T. Jarvinen)Niemi,R.大鼠小脑膜中2-花生四烯酸甘油水解酶中巯基敏感位点的表征。化学生物学 2005年,12,649-656),为MGL抑制剂,以及沿着这些线路,我们提出一组新的马来酰亚胺衍生物的那显示出低微摩尔的IC 50和朝向MGL VS FAAH高选择性。然后,研究了结构活性关系,例如,1-biphenyl-4
Generation of C<sub>2</sub>F<sub>5</sub>CHN<sub>2</sub>In Situ and Its First Reaction: [3+2] Cycloaddition with Alkenes
作者:Pavel K. Mykhailiuk
DOI:10.1002/chem.201304840
日期:2014.4.22
The novel chemical reagent, C2F5CHN2, is generated in situ from C2F5CH2NH2⋅HCl and sodium nitrite. It reacts with mono‐ and disubstituted electron‐deficient alkenes at room temperature to afford C2F5‐pyrazolines in excellent yields.
由C 2 F 5 CH 2 NH 2 · HCl和亚硝酸钠原位生成新型化学试剂C 2 F 5 CHN 2。它在室温下与单或双取代的缺电子烯烃反应,以极好的收率提供C 2 F 5-吡唑啉。
Ruthenium(II)-Catalyzed C–H Activation of Chromones with Maleimides to Synthesize Succinimide/Maleimide-Containing Chromones
efficient route for the coupling of maleimides with chromones at the C5-position has been developed under Ru(II) catalysis. It could provide 1,4-addition products and oxidative Heck-type products by switching additives. Benzoic acid led to the formation of 1,4-addition products under solvent-free conditions, and silver acetate was promoted to the generation of oxidative Heck-type products. Various maleimides
dissected halogen–aryl π interactions experimentally using a bicyclic N-arylimide based moleculartorsionbalances system, which is based on the influence of the non-bonded interaction on the equilibria between folded and unfolded states. Through comparison of balances modulated by higher halogens with fluorinebalances, we determined the magnitude of the halogen–aryl π interactions in our unimolecular