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Chlorination of tectochrysin and pinostrobin in methanol |
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| Authors: | Kulmagambetova E. A. Seitembetova A. G. Kulyjasov A. T. Raldugin V. A. Gatilov Yu. V. Shakirov M. M. Adekenov S. M. Tolstikov G. A. |
| Affiliation: | (1) Ministry of Education and Sciences of the Republic of Kazakhstan, Institute of Phytochemistry, 4 ul. Gazalieva, 470032 Karaganda, Kazakhstan;(2) N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9 prosp. Akad. Lavrent"eva, 630090 Novosibirsk, Russian Federation |
| Abstract: | The reactions of the natural flavonoids tectochrysin and pinostrobin with chlorine in methanol afforded for the first time their 6,8-dichloro derivatives. Under the reaction conditions, dichloropinostrobin was transformed further into a tetrachloromethoxy derivative. The molecular structure of the latter was established by X-ray diffraction analysis. |
| Keywords: | flavonoids tectochrysin pinostrobin chlorination X-ray diffraction analysis 2D NMR spectroscopy |
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