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Vedernikov D.N.,Kirov St Petersburg State Academy Of Forestry Engineering | Roshchin V.I.,Kirov St Petersburg State Academy Of Forestry Engineering
Russian Journal of Bioorganic Chemistry | Year: 2010

This report is devoted to study of the composition of the hydrocarbon extract from buds of European birch (Betula pendula). We have identified norsesquiterpene aldehyde, or birkenal (1S,4S,7R)-4,8,8-trimethyl-2-methylene- bicyclo[5.2.0]-nonan-4-al, β-caryophyllene oxide, fatty acid triglycerides, a triterpene compound, i.e., dammaradienone (3-oxo-dammara-20(21),24-diene), and the following acetates of sesquiterpene alcohols: (6R)-acetoxy-β- caryophyllene ((1R,6R,9S)-acetoxy-4,11,11-trimethyl-8-methylenebicyclo[7,2,0]- undec-4-ene), 14-acetoxy-β-caryophyllene ((1R,9S)-14-acetoxy-4,11,11- trimethyl-8-methylenebicyclo[7,2,0]-undec-4-ene), (6R)-acetoxy-α-humulene ((6R)-acetoxy-4,11,11-trimethyl-8-methylcy-cloundec-1,4,8-triene), αβ and βα oxides of 14-acetoxy-β-caryophyllene (14-acetoxy-4,5-epoxy-4,11,11-trimethyl-8-methylenebicyclo[7,2,0]undec-4-ene). The gas chromatographic retention indices of all identified compounds have been determined. © 2010 Pleiades Publishing, Ltd. Source


Vedernikov D.N.,Kirov St Petersburg State Academy Of Forestry Engineering | Roshchin V.I.,Kirov St Petersburg State Academy Of Forestry Engineering
Russian Journal of Bioorganic Chemistry | Year: 2010

This is the first report devoted to study of the hydrocarbon composition of the extract of buds of European birch Betula pendula (family Betulacea). We have identified saturated (C16 to C28, even number of carbon atoms) and unsaturated (linoleic and linolenic) fatty acids, β-caryophyllene, α-humulene, and the components of epicuticular waxes of cover scales, such as n-alkanes (C21 to C26), esters of fatty acids (C16 to C28, even number of carbon atoms), and fatty alcohols (C18 to C30, even number of carbon atoms). The gas chromatographic retention indices of all identified compounds have been determined. © 2010 Pleiades Publishing, Ltd. Source


Sumerskii I.V.,Kirov St Petersburg State Academy Of Forestry Engineering | Krutov S.M.,Kirov St Petersburg State Academy Of Forestry Engineering | Zarubin M.Ya.,Kirov St Petersburg State Academy Of Forestry Engineering
Russian Journal of Applied Chemistry | Year: 2010

Pathways of formation of humin-like substances from carbohydrates and furan compounds under the conditions of acid hydrolysis of wood were studied. © 2010 Pleiades Publishing, Ltd. Source

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