Structures of fersin and fersinin

Two new compounds — fersin and fersinin — have been isolated from the neutral fraction of the total extractive substances from the roots ofFerula soongorica. Their structures have been established on the basis of chemical transformations and spectral characteristics.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 89 14 75. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 504–506, July–August, 1994.     

Electrohydraulic effect in heterodisperse water-plant systems. II. Chemical nature of the suspended particles

On the basis of the results of acid hydrolysis, chromatographic analysis of the hydrolysates, and a study of IR spectra, it has been established that the suspended particles liberated under the action of electrohydraulic shocks on heterodisperse water—plant systems consist of small fragments of the lignocarbohydrate complex of the plant tissue.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent. FAX (3712) 62 73 48. Division of Wood Chemistry, Irkutsk Institute of Organic Chemistry, Siberian Division of the Russian Academy of Sciences. Institute of Solar and Terrestrial Physics, Siberian Division of the Russian Academy of Sciences, Irkutsk, FAX (395-3) 46 25 57. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 435–439, May–June, 1994.     

Alkaloids ofPetilium eduardi. Petine and petine N-oxide

Two new alkaloids — petine and petine N-oxide — have been isolated from the bulbs of Petilium eduardi. Their structures have been established on the basis of spectral characteristics and chemical transformations.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 89-14-75. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 524–528, July–August, 1994.     

Influence of demethylated lignin on the alkaline hydrolysis of cottonplant lignin

This paper gives information about the influence of demethylated lignin on the alkaline hydrolysis of the natural lignin of the cotton plant under various conditions.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 89-14-75. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 537–541, July–August, 1994.     

Interaction of 6,7-epoxygeranyl acetate and of 10,11-epoxy-(E,E)-farnesyl acetate with fluorosulfonic acid

The interaction of 6,7-epoxygeranyl acetate and of 10,11-epoxy-(E,E)-farnesyl acetate with fluorosulfonic acid forms isomerization products and products of the opening of the epoxide rings.Institute of Chemistry, Academy of Sciences of the Republic of Moldova, Kishinev. FAX 73-99-54. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 691–697, September–October, 1993.     

Quantitative analysis of pinocembrin

A procedure has been developed for the chromato-spectrometric determination of pinocembrin in the substance isolated from the liquorice plant.Uzbek Scientific-Research Institute of Chemical Technology and Catalysis, Tashment. Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 62 73 48. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 446–448, May–June, 1994.     

Hydrolytic splitting of carboxymethylcellulose

The possibility has been shown of using hydrolytic splitting to regulate the degree of polymerization and the molecular and compositional homogeneity of carboxymethylcellulose, which makes it suitable for the production of medico-biological polymers.A. S. Sadykov Institute of Bioorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 62-70-71. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 541–544, July–August, 1994.     

Mass-spectrometric analysis of phytol derivatives from the leaves ofPlatanus orientalis

Products of the oxidation, polymerization, and esterification of tocopherols and esters of phytol with aliphatic acids have been identified in fractions of an alcoholic extract of shed plane leaves by means of mass-spectrometric analysis.Deceased.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 62 73 48. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 363–371, May–June, 1994.     

Functional properties of a serine protease inhibitor from cotton seeds

It has been shown that dormant cotton seeds contain proteins capable of inhibiting the activity of the proteolytic enzymes of the pathogenVerticillium dahliae Kleb. An immunochemical method of evaluating the resistance of a cotton plant to this fungus has been developed.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 89-14-75. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 533–537, July–August, 1994.     

Lipids of microalgae. IV. Fatty acids of the biomass ofMonochrysis lutheri grown under the conditions of an accumulation culture

In the lipids of the biomass of the microalga Monochrysis lutheri, 37 fatty acids have been detected; the main ones are the 16:0 and 16:1 species, the latter being represented by two isomers. The specific localizations of the 16:1, 20:4, and 20:5 acids in the triacylglycerols and the phospho- and glycolipids have been found.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 62 73 48. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 330–334, May–June, 1994.     

Study of the lignin of a cotton plant of the variety S-6524

The dioxane lignin (DLA) has been isolated from ripe stems of a cotton plant of the variety S-6524, and its empirical formula and molecular mass have been determined. This DLA differed from the DLA of a cotton plant of variety 108-F by a lower degree of hydroxylation and a higher degree of substitution of the aromatic rings.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 62 73 48. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 430–431, May–June, 1994.     

Nitration of carboxymethylcellulose

The influence of the conditions of nitration and the structure of the initial carboxymethylcellulose on the depth of conversion and the molecular characteristics of the nitroesters obtained has been investigated. The products obtained after optimization of the hydrophilic-hydrophobic balance with the aim of imparting solubility to them possess a pronounced antianginal action.A. S. Sadykov Institute of Biochemistry, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 62-70-71. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 544–546, July–August, 1994.     

Rheological properties of interphase adsorption layers of gossypin at a liquid-liquid phase separation boundary. III. Influence of chemical modification

The rheological properties of interphase absorption layers of gossypin derivatives at liquid phase separation boundaries and the stability of benzene emulsions have been investigated. It has been shown that the acylation of gossypin with acetic and succinic anhydrides lowers the strength properties of the adsorption layers of protein, leading to a change in the stability of benzene emulsions stabilized by gossypin.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 89-14-75. M. V. Lomonosov Moscow State University. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 528–533, July–August, 1994.     

Carbohydrates of Allium. XIII. Glucofructans ofAllium suvorovii

The structures of the glucofructans GFAS-B3 and GFAS-I have been established on the basis of the results of periodate oxidation, methylation, and IR and¹³C NMR spectroscopies. It has been shown that the glucofructans studied are compounds containing both inulin, (21), and levan, (26), glycosidic bonds.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 62 73 48. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 179–183, March–April, 1994.     

Lipids of microalgae. III. Lipids of the biomass ofMonocrysis lutheri grown under the conditons of an accumulation culture

The class composition of the lipids of the biomass of the microalgaMonochrysis lutheri grown under the accumulation regime of cultivation has been investigated for the first time. A predominance of triacylglycerols in the neutral lipids, of phosphatidylcholine in the phospholipids, and of digalactosyldiacylglycerols in the glycolipids has been established. New natural alkan-8-ones of the C₃₆-C₅₀ series have been detected.Institute of the Chemistry of Plant Substances. Academy of Sciences, of the Republic of Uzbekistan, Tashkent. FAX (3712) 62 73 48. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 325–330, May–June, 1994.     

Thermochemistry of complex compounds

The main features of the experimental investigation of the thermochemistry of complexation reactions in solution and the mathematical treatment of the results of a calorimetric experiment have been considered. Some laws governing the thermodynamic and thermochemical characteristics of reactions resulting in the formation of complex compounds have been noted.Ivanovo Chemical-Engineering Institute. Translated from Teoreticheskaya i Éksperimental'naya Khimiya, Vol. 27, No. 3, pp. 278–283, May–June, 1991. Original article submitted February 26, 1991.     

Solubility of the proteins and phytates of cottonseed meal in the presence of metal ions

The solubility of the proteins and phytates of cotton seeds in the presence of metal ions (Ca²⁺, Fe³⁺, Zn²⁺) at various pH values of the medium has been studied. It has been shown that complete precipitation of the protein by phytin from solution (C_protein)=1.5%), sets in at a mass ratio of phytin to protein of 1:15, pH 1.5.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, FAX (3712) 62 73 48. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 421–424. May–June, 1994.