A concise synthesis of 1-substituted-2-tetralones by selective diol dehydration leading to ketone transposition
摘要:
Dehydration of 1-substituted-1,2-tetralindiols with zinc iodide afforded the corresponding 2-tetralones in excellent yields. This procedure was found to be superior to the more conventional BF3-catalyzed rearrangement of 1-substituted-1,2-epoxytetralins. (C) 2000 Elsevier Science Ltd. All rights reserved.
Access to Diverse Oxygen Heterocycles via Oxidative Rearrangement of Benzylic Tertiary Alcohols
作者:Brandon T. Kelley、Jennifer C. Walters、Sarah E. Wengryniuk
DOI:10.1021/acs.orglett.6b00672
日期:2016.4.15
A facile method for the synthesis of challenging medium-sized cyclic ethers has been developed via a novel oxidative rearrangement of benzylic tertiaryalcohols. The reaction provides access to cyclic acetals with diverse substitution at both C2 and the aromatic ring. The unique reactivity is enabled by poly(cationic) hypervalent iodine reagents and represents the first synthetic application of this
Substituted dihydronaphthalenes as efflux pump inhibitors of Staphylococcus aureus
作者:Niranjan Thota、Mallepally V. Reddy、Ashwani Kumar、Inshad A. Khan、Payare L. Sangwan、Nitin P. Kalia、Jawahir L. Koul、Surrinder Koul
DOI:10.1016/j.ejmech.2010.05.006
日期:2010.9
A new series of 3-(substituted-3,4-dihydronaphthyl)-2-propenoic acid amides has been prepared through convergent synthetic strategies and tested in combination with ciprofloxacin against NorA overexpressing Staphylococcus aureus 1199B as test strain for potentiating of the drug activity. Out of 24 compounds evaluated, 12 compounds potentiated the activity of ciprofloxacin and resulted in 2-16 fold reduction in the MIC (4-0.5 mu g/mL) of the drug. The failure of these efflux pump inhibitors (EPIs) to potentiate the activity of ciprofloxacin when tested against NorA knock out S. aureus SA-K1758 established their identity as NorA inhibitors. The structure of all these newly synthesised compounds was confirmed by spectral data. The present communication describes the synthesis, bioevaluation, structure activity relationship and mechanism of action of these EPIs. (C) 2010 Elsevier Masson SAS. All rights reserved.
[EN] NOVEL EFFLUX PUMP INHIBITORS<br/>[FR] NOUVEAUX INHIBITEURS DE POMPE D'EFFLUX
申请人:COUNCIL SCIENT IND RES
公开号:WO2009110002A4
公开(公告)日:2009-12-03
Cuppen, Th. J. H. M.; Berendsen, N.; Laarhoven, W. H., Recueil des Travaux Chimiques des Pays-Bas, 1990, vol. 109, # 3, p. 168 - 171
作者:Cuppen, Th. J. H. M.、Berendsen, N.、Laarhoven, W. H.
DOI:——
日期:——
Alesso, Elba; Torviso, Rosario; Finkielsztein, Liliana, Journal of Chemical Research, Miniprint, 2001, # 12, p. 1232 - 1245