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Anderson D.G.,University of Aberdeen | Ineshin E.M.,Irkutsk State University | Kulagina N.V.,Russian Academy of Sciences | Lavento M.,University of Helsinki | Vinkovskaya O.P.,Irkutsk State Agricultural Academy
Human Ecology | Year: 2014

This interdisciplinary study applies a series of environmental tests developed in Fennoscandia to elaborate the patterns created by contemporary and past reindeer husbandry along the Zhuia River, Bodaibo district, Irkutsk oblast', Russian Federation. We successfully used pollen and fungal spore analysis to document the long-term use of one site by ungulates-although it remains unclear if these animals were 'domestic' reindeer or not. The date of occupation could go as far back as the fourteenth century. The on-site phosphate analysis, attempted for the first time in Eastern Siberia, proved a useful tool for locating the sites of animal action although failed to specify the boundaries of that action. It did emphasise the importance of accounting for the agency of wind in ordering reindeer behaviour. Finally, the combined phosphate, botanical, and pollen work documented a history of succession of types of land-use from the hunting of Rangifer, to holding Rangifer, to the maintenance of meadows for horses or cattle, to the formation of cereal crops and vegetable patches. The combined use of these methods and a discussion of the ambiguities they produced suggests that they are best employed to find distinctive sites in the landscape which attract both people and animals and are less effective in documenting a Euro-American vision of trust or domination in human-animal relations. © 2014 Springer Science+Business Media New York. Source


Parshina L.N.,Favorsky Irkutsk Institute of Chemistry | Grishchenko L.A.,Favorsky Irkutsk Institute of Chemistry | Larina L.I.,Favorsky Irkutsk Institute of Chemistry | Novikova L.N.,Irkutsk State Agricultural Academy | Trofimov B.A.,Favorsky Irkutsk Institute of Chemistry
Carbohydrate Polymers | Year: 2016

Novel pharmacologically prospective derivatives of arabinogalactan (a polysaccharide from larch wood) containing acetylenic and thiophene moieties have been obtained in up to 90% yield by cross-coupling of propargylic ethers of arabinogalactan with 2-bromothiophene. The reaction proceeds in the presence of the catalytic system Pd(Ph3P)4/CuBr/LiBr and piperidine in DMSO at 80–85 °С. An advantageous feature of the synthesis is that it requires 5–25 times lesser catalytic loading than in common Sonogashira protocols thus making the reaction particularly beneficial to synthesize pharmaceutically-oriented polysaccharides. © 2016 Elsevier Ltd Source


On the basis of our materials for the period of more than 40 years and published data, the territorial aspect of muskrat (Ondatra zibethicus) and American mink (Neovison vison) invasion is characterized in dynamics. Special attention is paid to the state of their number and economic importance. © 2014 Pleiades Publishing, Ltd. Source


Grischenko L.A.,Favorsky Irkutsk Institute of Chemistry | Parshina L.N.,Favorsky Irkutsk Institute of Chemistry | Kanitskaya L.V.,Irkutsk State University | Larina L.I.,Favorsky Irkutsk Institute of Chemistry | And 2 more authors.
Carbohydrate Research | Year: 2013

New arabinogalactan propargyl ethers with degree of substitution (DS) up to 2.8 have been obtained by propargylation of arabino-3,6-galactan (AG) with propargyl bromide (PB) in the two-phase system 30-60% ROH aqueous solution/toluene in the presence of triethylbenzylammonium chloride (TEBAC) or without catalyst (ambient temperature, 1-24 h) in 20-87% yields. The highest yields have been reached using TEBAC as phase-transfer catalyst, though the non-catalytic version proves to be also efficient (DS 2.8, 70% yield). The propargylation of AG is less effective in the systems MOH (M = Na, K)/DMSO. DS of propargyl AG reaches 1.8 (70% yield) when propargyl chloride is used as propargylating agent, while with PB under the same conditions DS value does not exceed 0.4-0.6, the yields being 44-65%. Under the action of t-BuOK/DMSO system, the AG propargyl ethers have been isomerized to the corresponding unstable allenyl ethers. AG propargyl ethers with DS 2.0 have been almost exhaustively metallated with Ag2O/NH3 system to give AG-Ag acetylides derivatives with Ag/C,C ratio equaling 0.95. © 2013 Elsevier Ltd. All rights reserved. Source


Grischenko L.A.,Favorsky Irkutsk Institute of Chemistry | Parshina L.N.,Favorsky Irkutsk Institute of Chemistry | Larina L.I.,Favorsky Irkutsk Institute of Chemistry | Novikova L.N.,Irkutsk State Agricultural Academy | Trofimov B.A.,Favorsky Irkutsk Institute of Chemistry
Carbohydrate Polymers | Year: 2015

Polysaccharide arabinogalactan (AG) has been modified by triazolyl functions via the copper-catalyzed 1,3-dipolar addition of azides to propargyl ethers. A range of new AG triazolo derivatives bearing benzyl, 4-vinylbenzyl, 1-naphthylmethyl, (1-vinylimidazol-2-yl)methyl, (1-ethylimidazol-2-yl)methyl, (1-vinylbenzimidazol-2-yl)methyl, allyl, carboxymethyl (as Na-salt) substituents is prepared by "one-pot" approach from organic azides generated in situ and AG propargyl ethers. The latter (degree of substitution 2.0-2.2) are converted into 1,2,3-triazolo AGs in DMSO/water mixture in the presence of CuSO4·5H2O/sodium ascorbate/Et3N in 82-94% yields and with 60-100% conversion. © 2014 Elsevier Ltd. All rights reserved. Source

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