computational investigation on sulfonyl amidine formation from thioamides and sulfonylazides is described. The data support a non-concerted two-step pathway for the coupling reaction and also indicate that dipole moment of thioamide and electrophilicity of sulfonylazide would be significant factors for the reaction efficiency. A simple reactivity prediction of the coupling reaction was demonstrated by preliminary
Dehydrative Beckmann rearrangement and the following cascade reactions
作者:Yongjiao Wei、Yinghui Liu、Lan-Gui Xie
DOI:10.1016/j.cclet.2021.10.020
日期:2022.5
The Beckmannrearrangement has been predominantly studied for the synthesis of amide and lactam. By strategically using the in situ generated Appel's salt or Mitsunobu's zwitterionic adduct as the dehydrating agent, a series of Beckmannrearrangement and following cascade reactions have been developed herein. The protocol allows the conversion of various ketoximes into amide, thioamide, tetrazole and
Contribution of Solvents to Geometrical Preference in the <i>Z</i>/<i>E</i> Equilibrium of <i>N</i>-Phenylthioacetamide
作者:Shuyi Song、Tadashi Hyodo、Hirotaka Ikeda、Kim Anh L. Vu、Yulan Tang、Erika S. Chan、Yuko Otani、Satoshi Inagaki、Kentaro Yamaguchi、Tomohiko Ohwada
DOI:10.1021/acs.joc.1c00801
日期:2022.2.4
various solvents by means of 1H NMR spectroscopy, as well as molecular dynamics (MD) and other computational analyses. Our experimental results indicate that the Z/E isomer preference of secondary (NH)thioamides of N-phenylthioacetamides shows substantial solventdependency, whereas the corresponding amides do not show solventdependency of the Z/E isomer ratios. Detailed study of the solvent effects
Study of the structural and conformational properties of fluoro-substituted thioacetanilide derivatives
作者:José Osvaldo Guy Lezama、Ana G. Iriarte、Rodrigo E. Domínguez、Norma Lis Robles
DOI:10.1016/j.molstruc.2020.128768
日期:2020.12
Abstract The assessment of the influence of a halogen atom in the structural, vibrational and conformational properties of o-, m- and p-fluorothioacetanilide derivatives was achieved through different methodologies. For all compounds infrared (FTIR) and nuclear magnetic resonance (NMR) data were obtained; for m-fluorothioacetanilide, FT Raman and GC/MS analysis were additionally performed. The substances
Carboline Derivatives Useful in the Inhibition of Angiogenesis
申请人:MOON Young-Choon
公开号:US20070281962A2
公开(公告)日:2007-12-06
In accordance with the present invention, compounds that inhibit the expression of VEGF post-transcriptionally have been identified, and methods for their use provided. In one aspect of the invention, compounds useful in the inhibition of VEGF production, in the inhibition of angiogenesis, and/or in the treatment of cancer, diabetic retinopathy or exudative macular degeneration are provided. In another aspect of the invention, methods are provided for the inhibition of VEGF production, the inhibition of angiogenesis, and/or the treatment of cancer, diabetic retinopathy or exudative macular degeneration using the compounds of the invention.