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A spectroelectrochemical and chemical study on oxidation of 7,8-dihydroxy-4-methylcoumarin (DHMC) and some related compounds in aprotic medium |
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| Authors: | Rita Petrucci Luciano Saso Vineet Kumar Ashok K. Prasad Sanjay V. Malhotra Virinder S. Parmar Giancarlo Marrosu |
| Affiliation: | 1. Dipartimento di Ingegneria Chimica Materiali Ambiente, Sapienza Università di Roma, Via del Castro Laurenziano 7, I-00161, Rome, Italy;2. Dipartimento di Fisiologia e Farmacologia “Vittorio Erspamer”, Sapienza Università di Roma, p.le Aldo Moro 5, I-00185, Rome, Italy;3. Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi- 110 007, India;4. Laboratory of Synthetic Chemistry, Development Therapeutics Program Support, National Cancer Institute-Frederick, SAIC-Frederick, 1050 Boyles Street, Federick, MD 21702, USA |
| Abstract: | Electrochemical and chemical oxidation of 7,8-hydroxy-4-methylcoumarin (DHMC 1) and 7,8-diacetoxy-4-methylcoumarin (DAMC 4) were studied to investigate the mechanisms occurring in their antioxidant activities in acetonitrile, under electron transfer and H-atom transfer conditions. Electrolysis and chemical reactions were followed on-line by monitoring the UV spectral changes with time. |
| Keywords: | Antioxidants Polyphenols oxidation Radical anions Semiquinones Spectroelectrochemistry |
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