Chemical constituents of the extracts of the knotwood of Pinus roxburghii Sarg. and their antioxidant activity


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Abstract

Chemical composition of the extract from the Pinus roxburghii Sarg. knotwood was studied for the first time. The extracts were obtained by ultrasound assisted sequential extraction of knotwood with hexane, acetone—water (95 : 5, v/v), and water. According to GC-MS analysis, hexane extract was dominated by monoterpenoids amounting to 53.57% and sesquiterpenoids (41.05%). Components of the acetone—water (95 : 5, v/v) extract were isolated, purified by HPLC, and identified by NMR spectroscopy and mass spectrometry as 2,3-bis(4-hydroxy-3-methoxybenzyl)butan-1,4-diol, 3-hydroxy-3,4-bis(4-hydroxy-3-methoxybenzyl)dihydrofuran-2(3H)-one and 3,4-bis(4-hydroxy-3-methoxybenzyl)dihydrofuran-2(3H)-one. These compounds demonstrated notable antioxidant capacity determined using the amperometric method.

About the authors

D. E. Tsvetkov

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: nen@ioc.ac.ru
Russian Federation, 47 Leninsky prosp., Moscow, 119991

R. Kumar

Chemistry and Bioprospecting Division, Institute of Wood Science and Technology

Email: nen@ioc.ac.ru
India, 18th Cross, Malleshwaram, Bangalore, 560003

R. Devrani

Chemistry and Bioprospecting Division, Forest Research Institute

Email: nen@ioc.ac.ru
India, Dehradun, 248006

A. S. Dmitrenok

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: nen@ioc.ac.ru
Russian Federation, 47 Leninsky prosp., Moscow, 119991

Yu. E. Tsvetkov

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: nen@ioc.ac.ru
Russian Federation, 47 Leninsky prosp., Moscow, 119991

A. O. Chizhov

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: nen@ioc.ac.ru
Russian Federation, 47 Leninsky prosp., Moscow, 119991

A. Ya. Yashin

International Analytical Center, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: nen@ioc.ac.ru
Russian Federation, 47 Leninsky prosp., Moscow, 119991

Ya. I. Yashin

International Analytical Center, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Email: nen@ioc.ac.ru
Russian Federation, 47 Leninsky prosp., Moscow, 119991

V. K. Varshney

Chemistry and Bioprospecting Division, Forest Research Institute

Author for correspondence.
Email: vinay.varshney5@gmail.com
India, Dehradun, 248006

N. E. Nifantiev

N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences

Author for correspondence.
Email: nen@ioc.ac.ru
Russian Federation, 47 Leninsky prosp., Moscow, 119991

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