1,4-pentandien-3-ones, XXXII: Reaction of 2-acetylthiophene and 2-acetylfuran with malononitrile and aldehydes, and synthesis and properties of phenylene-bis [(thienyl/furyl)nicotinonitrile] derivative
作者:Lutz Greiner-Bechert、Hans-Hartwig Otto
DOI:10.1002/ardp.2503240908
日期:——
(1b) with aldehydes. The Michael adducts 5/6 are obtained from 3/4 by reaction with malononitrile/LDA in THF at −78°C, or in DMSO with NaH at room temp. Reaction of 3/4 with malononitrile and methylate in methanol yielded the substituted nicotinonitriles 7/8. From terephthalaldehyde, the diketones 9 are prepared, which yield with malononitrile the phenylene‐bis[(thienyl/furyl)nicotinonitrile] derivatives
Synthesis and biologic activities of some novel heterocyclic chalcone derivatives
作者:Punita Sharma、Suresh Kumar、Furquan Ali、Sumati Anthal、Vivek K. Gupta、Inshad A. Khan、Surjeet Singh、Payare L. Sangwan、Krishan A. Suri、Bishan D. Gupta、Devinder K. Gupta、Prabhu Dutt、Ram A. Vishwakarma、Naresh K. Satti
DOI:10.1007/s00044-012-0401-7
日期:2013.8
25, and 26 showed promising anticancer activity in all four tested cancer cell lines (HL-60, MOLT-4, PC-3, and HeLa). Compound 25 emerged as a very good potentiator of ciprofloxacin against multidrug resistant S. aureus and also showed promising anticancer activity. The present communication describes syntheses, bio-evaluation, and structure-related activity of the (E)-3-(substitutedphenyl)-1-hetrylprop-2-en-1-ones
Synthesis of 2-Aryl-Substituted Chromans by Intramolecular C-O Bond Formation
作者:Robert Franzén、Yu Wang
DOI:10.1055/s-0031-1290607
日期:2012.4
A synthetic route for the preparation of 2-aryl-substituted chromans from commercially available starting materials and utilizing either a palladium- or copper-catalyzed intramolecular cyclization of aryl bromides is described. Chromans with stereocontrol at C-2 can thus be obtained via a palladium-catalyzed asymmetric allylic etherification procedure utilizing a chiral indole-phosphine oxazoline (IndPHOX) ligand.