DIHYDROMYRICETIN FROM THE SIBERIAN LARCH SHOOTS BARK
Abstract
The individual component ([α]D26 (с = 1,04; acetone : water 1 : 1) + 38,5°, m.p. 230–232 °C) was isolated from diethyl soluble part of isopropanol extract of the Siberian larch shoots bark. Samples of raw materials were collected in July2013 in the Turuntayevsk forestry of theTomsk region. The yield of shoots bark isopropanol extract was 21% (from weight of absolute dry bark). Isopropyl alcohol extract was deresinified by petroleum ether. The moiety of lipophilic substances was 88.9% in isopropanol extract. Then resin-free extract was treated with diethyl ether to obtain the aglycones of the phenolic compounds. The moiety of diethyl soluble substances was 4,8% in isopropanol extract and 1,0% in dry bark weight. 75,8% of «phenolic acids» were isolated from diethyl ether extract by sodium bicarbonate. Individual component with yield of 11,5% was isolated from «phenolic acids» using column chromatography method. According to UV, IR, NMR1Н и 13С the substance was identified with dihydromyricetin. It is the first report about isolation of dihydromyricetin in the Siberian larch shoots bark.
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Ivanova S.Z., Fedorova T.E., Ostroukhova L.A., Fedorov S.V., Onuchina N.A., Babkin V.A. Khimiia rastitel'nogo syr'ia, 2001, no. 4, pp. 21–24. (in Russ.).
Medvedeva S.A. Issledovanie fenol'nykh soedinenii khvoi nekotorykh vidov pikhty i listvennitsy: dis. … kand. khim. nauk. [Investigation of phenolic compounds of needles of some species of fir and larch: dis. ... cand. Chem. Sciences]. Novosibirsk, 1973, 138 p. (in Russ.).
Ivanova N.V., Ostroukhova L.A., Babkin V.A., Ivanova S.Z., Popova O.V. Khimiia rastitel'nogo syr'ia, 1999, no. 4, pp. 5–7. (in Russ.).
Babkin V.A., Ostroukhova L.A., Malkov Iu.A., Ivanova S.Z., Onuchina N.A., Babkin D.V. Khimiia v interesakh ustoichivogo razvitiia, 2001, no. 9, pp. 363–367. (in Russ.).
Tranchuk N.V., Roshchin V.I. Khimiia rastitel'nogo syr'ia, 2015, no. 4, pp. 63–70. (in Russ.).
Tranchuk N.V., Roshchin V.I. Tezisy dokladov V Mezhdunarodnoi nauchno-prakticheskoi konferentsii «Innovatsii i tekhnologii v lesnom khoziaistve» ITF-2016. ["Innovations and technologies in forestry" ITF-2016. Abstracts of the V International Scientific and Practical Conference]. Sankt-Peterburg, 2016, p. 135. (in Russ.).
Tranchuk N.V., Roshchin V.I. Izvestiia Sankt-Peterburgskoi lesotekhnicheskoi akademii, 2016, no. 216, pp. 220–230. (in Russ.).
Lundgren L.N., Theander O. Phytochemistry, 1988, vol. 27, no. 3, pp. 829–832.
Agrawal P.K., Agrawal S.K., Rastogi R.P. Phytochemistry, 1980, vol. 19, pp. 893–896.
Outtrup H., Schaumburg K., Madsen J.O. Carlsberg Research Communication, 1985, vol. 50, pp. 369–379.
Liang X., Wu Y-P., Qiu J-H., Zhong K., Gao H. Jourmal of Food Science, 2014, vol. 79, no. 9, pp. 1643–1648.
Hänsel R., Klaffenbach J. Archiv der Pharmazie, 1961, vol. 66, no. 3, pp. 158–172.
Hergert H.L. Forest Products Journal, 1960, vol. 10, no. 11, pp. 610–617.
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