Anti-viral multi-quinone compounds and regiospecific synthesis thereof
申请人:——
公开号:US20040087663A1
公开(公告)日:2004-05-06
This invention provides various biquinone and trimeric quinone derivatives. The invention also provides a method for synthesis of a multi-quinone compound including reacting a hydroxyquinone anion with a first quinone possessing a first directing group at a C-2 of the first quinone and a second directing group at a C-3 of the first quinone and obtaining a biquinone having one of the first and second directing groups at a C-3 of a first quinone monomer and a hydroxyl group at a C-3′ of a second quinone monomer. The biquinone can be further reacted to obtain various biquinone derivatives or with a second hydroxyquinone anion to obtain trimeric quinone derivatives, including trimeric naphthoquinone derivatives. The biquinones and trimeric quinones of this invention demonstrate antiviral activity and can be used to treat viral infections, particularly HIV infections.
Regiocontrolled synthesis and HIV inhibitory activity of unsymmetrical binaphthoquinone and trimeric naphthoquinone derivatives of conocurvone
作者:Kenneth W. Stagliano、Ashkan Emadi、Zhenhai Lu、Helena C. Malinakova、Barry Twenter、Min Yu、Louis E. Holland、Amanda M. Rom、John S. Harwood、Ronak Amin、Allison A. Johnson、Yves Pommier
DOI:10.1016/j.bmc.2006.04.034
日期:2006.8
Unsymmetrical biquinone and trimeric quinone derivatives were synthesized using halotriflate-biselectrophilic naphthoquinones through stepwise regioselective quinone substitution chemistry and evaluated for their ability to inhibit the cytopathogenic effects of HIV-1 using an MTT colorimetric assay. Compounds were also screened for their ability to inhibit the activity of HIV-1 integrase in vitro. Pyranylated trimeric quinones and biquinones exhibited both antiviral activity and integrase inhibitory activity. Conocurvone 1 and trimeric quinone 21 were the most potent HIV integrase inhibitors in the series. All of the biquinones showed HIV inhibitory activity. Simple methoxy substituted biquinones did not inhibit HIV-1 integrase. Published by Elsevier Ltd.
Single crystal X-ray structure of Lawsone anion: Evidence for coordination of alkali metal ions and formation of naphthosemiquinone radical in basic media
作者:Sunita Salunke-Gawali、Laxmi Kathawate、Yogesh Shinde、Vedavati G. Puranik、Thomas Weyhermüller
DOI:10.1016/j.molstruc.2011.11.015
日期:2012.2
Elemental Analysis, FTIR, 1 HNMR and EPR studies. The results reveal the coordination of alkali metals ‘Na’ and ‘K’ to lawsone anion. The single crystal X-ray structure of Lw - 6 was solved and it crystallizes in triclinic space group P-1 with extensive hydrogen bonding network of C H⋯O, N H⋯O and O H⋯O between cations and anions. Polycrystalline powder X-band EPR spectra of Lw - 1 to Lw - 5 shows signals
Regiocontrolled Synthesis of the Trimeric Quinone Framework of Conocurvone
作者:Ashkan Emadi、John S. Harwood、Sahar Kohanim、Kenneth W. Stagliano
DOI:10.1021/ol010272m
日期:2002.2.1
conocurvone is crucial for its potent anti-HIV activity. A newsynthesis of trimeric quinones based on stepwise substitution of the halogens in 2,3-dihaloquinones by hydroxyquinone anions is described. Chlorinated biquinones are key intermediates that undergo regiospecific substitution reactions to yield trimeric quinone monomethylethers.