Zobrazeno 1 - 10
of 26
pro vyhledávání: '"V. I. Roshchin"'
Publikováno v:
Russian Journal of Bioorganic Chemistry. 48:1526-1533
Autor:
D. S. Mikson, V. I. Roshchin
Publikováno v:
Russian Journal of Bioorganic Chemistry. 46:1396-1402
The research results of the Siberian larch needle extractives are presented in paper. The content of extractive substances from green and yellow needles extracted by organic solvents with different polarities is determined. It is found out that the d
Autor:
A. V. Troshina, V. I. Roshchin
Publikováno v:
Russian Chemical Bulletin. 63:2160-2168
The composition of neutral substances from the bark of Larix sibirica tree verdure (branches with needles) was determined. Alkenes were found for the first time in Larix genus. The group composition of neutral substances, as well as the contents of m
Autor:
D. S. Mikson, V. I. Roshchin
Publikováno v:
IOP Conference Series: Earth and Environmental Science. 316:012038
The composition of triterpene alcohols and sterols in the fraction of Siberian larch (Larix sibirica Ldb.) conifer needles is considered in paper. The needles areextracted with propan-2-ol; resinous substances are extracted with petroleum ether (40
Autor:
V. I. Roshchin, D. N. Vedernikov
Publikováno v:
Russian Journal of Bioorganic Chemistry. 38:753-761
This report is devoted to study of the hydrocarbon composition of the extract of buds of birch (family Betulaceae). We identified 3,5-dihydroxy-7,4′-dimethoxyflavone, 5,7-dihydroxy-3,4′-dimethoxyflavone, 7-methoxy-4′,5-dihydroxyflavanone, 4′-
Autor:
D. N. Vedernikov, V. I. Roshchin
Publikováno v:
Russian Journal of Bioorganic Chemistry. 38:762-768
The composition of the hydrocarbon extract of Betula pendula buds (Betulaceae) has been investigated. The following acids were identified in the extract: betulonic, moronic acid; 3,4-seco-olean-4(24)-en-19-on-3-oic; 28-acetooxy-3,4-seco-olean-4(24),1
Publikováno v:
Russian Journal of Bioorganic Chemistry. 37:877-882
In this article, the group chemical composition of individual parts of the bark of the Betula pendula (Betulaceae) birch was determined at different tree heights. The part of the bark in the examined birch was found to be 14%, including 5.4% of the o
Autor:
D. N. Vedernikov, V. I. Roshchin
Publikováno v:
Chemistry of Natural Compounds. 46:886-891
Humulene and its derivatives (6R)-hydroxy-α-humulene [(6R)-hydroxy-(1E,4E,8E)-4,8,11,11tetramethylcycloundeca-1,4,8-triene], (6R)-acetoxy-α-humulene [(6R)-acetoxy-(1E,4E,8E)-4,8,11,11tetramethylcycloundeca-1,4,8-triene], a coumaric acid ester, 14-h
Extractive compounds of birch buds (Betula pendula Roth.): II. Carbonyl compounds and oxides. Esters
Autor:
D. N. Vedernikov, V. I. Roshchin
Publikováno v:
Russian Journal of Bioorganic Chemistry. 36:899-908
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
Autor:
Kukovinets Olga S, V. N. Odinokov, M. I. Kislitsyn, Tolstikov Genrikh A, R. A. Zainullin, F. Z. Galin, V. I. Roshchin
Publikováno v:
Russian Journal of Organic Chemistry. 37:235-237
The ozonolysis of isoabienol in MeOH followed by hydrogenation of the peroxide ozonolysis products on Lindlar catalyst afforded ambreinolide that under treatment with diisobutylaluminum hydride furnished 8α,13-epoxy-14,15,16-trisnorlabd-12-ene.