Imposed hydrophobic interactions by NaCl: accountable attribute for the synthesis of spiro[acenaphthylene-1,5′-pyrrolo[1,2-c]thiazole] derivatives via 1,3-dipolar cycloaddition reaction in aqueous medium
[EN] NEW BICYCLICPYRIDINE DERIVATIVES<br/>[FR] NOUVEAUX DÉRIVÉS DE PYRIDINE BICYCLIQUE
申请人:HOFFMANN LA ROCHE
公开号:WO2014029723A1
公开(公告)日:2014-02-27
The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, A1, A2, A3, m, n and p are as described herein, compositions including the compounds and methods of using the compounds.
Montmorillonite-KSF mediated one step synthesis of pyranochromene derivatives
作者:Chitreddy V. Subbareddy、Radhakrishnan Subashini、Shanmugam Sumathi
DOI:10.1016/j.molstruc.2018.06.052
日期:2018.11
Abstract One-pot three-component reaction of substituted aromatic aldehydes, 2-cyanoacetamide and 4-hydroxycoumarin in the presence of Montmorillonite-KSF (MKSF) in ethanol results in the formation of pyrano[3,2-c]chromene-3-carboxylates (5a-m) has been described. The reaction was tested in different alcohols, afforded pyrano [3,2-c] chromene-3-carboxylates (5a-m) of the corresponding alcohols in good
Synthesis of new spirooxindolopyrrolidines via three-component reaction of isatins, α-amino acids, and (E)-3-aryl-2-cyanoacrylamides or (E)-3-aryl-2-(4-arylthiazol-2-yl)acrylonitriles
作者:Tetyana L. Pavlovska、Victoria V. Lipson、Svetlana V. Shishkina、Vladimir I. Musatov、Julia A. Nichaenko、Victor V. Dotsenko
DOI:10.1007/s10593-017-2075-z
日期:2017.4
of novel spirooxindolopyrrolidine derivatives has been prepared via a three-component1,3-dipolarcycloadditionreaction of 2-oxindoleazomethine ylides generated in situ from isatin and sarcosine or valine with (E)-3-aryl-2-cyanoacrylamides or (E)-3-aryl-2-(4-arylthiazol-2-yl)acrylonitriles as dipolarophiles. To rationalize the observed regio- and stereoselectivity, calculations of the geometrical structures
The invention provides novel compounds having the general formula (I)
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
, R
10
, R
11
, A
1
, A
2
, A
3
, m, n and p are as described herein, compositions including the compounds and methods of using the compounds.
Arylcyanoacrylamides as inhibitors of the Dengue and West Nile virus proteases
作者:Christoph Nitsche、Christian Steuer、Christian D. Klein
DOI:10.1016/j.bmc.2011.10.061
日期:2011.12
The 3-aryl-2-cyanoacrylamide scaffold was designed as core pharmacophore for inhibitors of the Dengue and West Nile virus serine proteases (NS2B-NS3). A total of 86 analogs was prepared to study the structure-activity relationships in detail. Thereby, it turned out that the electron density of the aryl moiety and the central double bond have a crucial influence on the activity of the compounds, whereas the influence of substituents of the amide residue is less relevant. The para-hydroxy substituted analog was found to be the most potent inhibitor in this series with a K(i)-value of 35.7 mu M at the Dengue and 44.6 mu M at the West Nile virus protease. The aprotinin competition assay demonstrates a direct interaction of the inhibitor molecule with active centre of the Dengue virus protease. The target selectivity was studied in a counterscreen with thrombin and found to be 2.8:1 in favor of DEN protease and 2.3:1 in favor of WNV protease, respectively. (C) 2011 Elsevier Ltd. All rights reserved.