Structure of the xyloglucan of the leaves ofHeracleum sosnowskyi

The results are given of investigations of the polysaccharide complex of the leaves ofHeracleum sosnowskyi. The complex was isolated from the leaves by extraction with alkali.M. V. Lomonosov Odessa Technological Institute of the Food Industry. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 282–284, May–June, 1984.     

Characteristics of the water-soluble polysaccharides of the leaves ofSilphium perfoliatum

The characteristics of the water-soluble complex of the leaves ofSilphium perfoliatum are given. The presence in them of acidic components of the type of pectic substances containing considerable amounts of compounds of protein nature has been shown. It has proved to be possible to separate the latter from the carbohydrate component by fractionation on DEAE-cellulose.M. V. Lomonosov Odessa Technological Institute of the Food Industry. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 771–774, November–December, 1979.     

Preliminary investigation of the water-soluble polysaccharides from the leaves of the bambooSasamorpha chiisanensis

It has been shown that the water-soluble polysaccharides of the leaves of the bambooSasamorpha chiisanensis Nak., after the removal of starch, contain residues of D-galactose, D-glucose, mannose, arabinose, D-xylose, rhamnose, and glucuronic and galacturonic acids and form an involved polysaccharide complex. Eight polysaccharide fractions differing in their uronic acid contents and in the ratio of neutral sugars have been isolated with the aid of chromatography on DEAE-cellulose.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 44–48, January–February, 1987.     

Carbohydrates and lipids ofBrassica oleracea

Lipids and polysaccharides have been obtained from the leaves ofBrassica oleracea. The qualitative and quantitative compositions of the lipid complex have been studied. The fatty acid compositions of the total neutral lipids and of the phospho- and glycolipids have been determined. The carbohydrate complex of cabbage includes water-soluble polysaccharides, low-methoxyl pectins, hemicelluloses, and free monosugars. The polypeptides have been characterized by their mannoside compositions.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. 5, pp. 612–615, September–October, 1994.     

Lipids of the vegetative and generative organs ofHibiscus sp.

The lipids of the leaves, stems, and roots ofHibiscus sp. have been studied. Their fatty acid compositions have been determined. The greatest amount of unsaturated fatty acids was present in the glycolipids of the leaves and the stems. More than 25% of low-molecular-mass C₁₀-C₁₂ fatty acids have been found in the neutral lipids of the roots.Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 705–708, September–October, 1996. Original article submitted March 11, 1996.     

Polysaccharides ofUngernia. XIII. Carbohydrates of the leaves of the genusUngernia

The present communication gives the results of an investigation of the carbohydrates isolated from the leaves of eight species ofUngernia. From a single sample were successively extracted the water-soluble polysaccharides, the glucofructans, the pectin substances, and the hemicelluloses. The qualitative and quantitative monosaccharide compositions of the carbohydrates isolated were determined, and the characteristics of the pectin substances are given.Deceased.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 647–650, September–October, 1984.     

Accumulation of polysaccharides under the influence of chlorocholine chloride inAronia melanocarpa

Water-soluble polysaccharides (WSPSs) have been isolated from the fruit and leaves ofAronia melanocarpa Elliot (black chokeberry) plants treated with chlorocholine chloride in various concentrations. It has been established that they are composed of galacturonic acid and the neutral monosaccharides galactose, glucose, arabinose, xylose, and rhamnose. In addition, another two unidentified spots of monosaccharides or their derivatives were found in the polysaccharides of the fruit, and one in those of the leaves. The ratios of the neutral monosaccharides in the WSPSs have been determined. Accumulation of the polysaccharides under the influence of various concentrations of chlorocholine chloride has been studied. It has been established that the retardant used (chlorocholine chloride) increases the accumulation of polysaccharides in the fruit by a factor of 1.5–2, but no appreciable accumulation of them was observed in the leaves.I. P. Pavlov Ryazan' Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 601–604, September–October, 1979.     

Polysaccharide from the leaves ofPhytolacca americana

A polysaccharide has been isolated from the leaves ofPhytolacca americana and has been characterized. It has been established that it contains residues of galactose, arabinose, xylose, and rhamnose, in a ratio of 3:4:1:3 and also D-galacturonic acid (85–90%). The results obtained permit the polysaccharide to be assigned to the class of pectin substances.All-Union Oncologic Scientific Center, Academy of Medical Sciences of the USSR, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 166–169, March–April, 1982.     

Carbohydrates ofSymphytum asperum

It has been shown that the carbohydrates ofSymphytum asperum L. — a promising fodder plant — include water-soluble polysaccharides, pectin substances, protopectin, hemicelluloses, a glucomannan, and cellulose. The quantitative amounts of the polysaccharide fractions in the raw material have been established and their characteristics are given. The protopectins of the leaves and stems ofSymphytum asperum L. have been characterized. Their macromolecules are based on a fragment constructed of D-galacturonic acid residues linked by -glycosidic bonds.M. V. Lomonosov Odessa Technological Institute of the Food Industry. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 15–20, January–February, 1984.     

Isolation of cyclocolorenone from the essential oil ofLedum palustre

Summary From a carbon dioxide extract and also from the essential oil of the leaves ofLedum palustre L. the sesquiterpene ketone cyclocolorenone, hitherto unreported for this medicinal plant, has been isolated. The structure proposed for it previously has been confirmed by NMR and mass spectroscopy and also by the production of hydrogenation products.All-Union Scientific-Research Institute of Medicinal Plants, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 212–215, March–April, 1978.     

A natural undecaprenol and its influence on the biochemical reactions of cotton seedling nuclei

A method has been developed for isolating polyprenols from the leaves of cotton plants of lines L-463, L-501, and L-4. The influence of an undecaprenol on the level of biosynthesis of the proteins of the nuclei of cotton seedlings has been studiedin vivo andin vitro. It has been found that they double the level of biosynthesis nuclear proteins when the seeds are first wetted in a 0.1% solution.Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 65–69, January–February, 1998.     

Essential oils of the leaves of grafts ofCitrus unshiu

The compositions of the essential oils obtained by steam distillation from the leaves of frost-resistant stocks of trifoliate orange (P. trifoliata (L.) Raf.) and Yunos-Yuzu citrus (Citrus ionos (Sieb.) and grafts of the mandarin orangeC. unshiu Marc —P. trifoliata +C. unshiu andC. ionos +C. unshiu — have been investigated with the aid of vacuum distillation, GLC, chromatography on an alumina column, and IR spectroscopy. The leaves were collected in the period of the flowering of the plants. The essential oils of grafts of the unshiu mandarin on trifoliate orange and Yunos-Yuzu citrus differed from one another with respect to the amounts of the components.Institute of Plant Biochemistry, Academy of Sciences of the Georgian SSR, Tbilisi, Batumi Botanical Garden, Academy of Sciences of the Georgian SSR. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 607–610, September–October, 1984.     

Polysaccharides of Eremurus. XXVI. Study of the structure of the pectin from the leaves of Eremurus regelii

The partial acid hydrolysis of the homogeneous fraction C of the pectin fromEremurus regelii Vved. leaves has given a galacturonan. Its structure has been established on the basis of the results of periodate-nitric acid oxidation, methylation, and¹³C NMR spectroscopy.Institute of Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 191–194, March–April, 1993.     

Cationic polymerization of hydrocarbon monomers under the action of acyl halide complexes with Lewis acids

Polymerization of isobutylene in hexane at –78 °C under the action of the complex AcBr · 2AlBr₃ (Ac-2) affords polyisobutylene having C=O groups at the head and C-Br or C=C groups at the tail of all the molecules. The presence of the latter indicates that there occurs proton elimination from the growing carbocation with the formation of a superacid HBr · 2AlBr₃ which is unable to initiate the polymerization repeatedly under given contitions. This makes it possible to consider proton elimination as the reaction of the decay of active centers with the rate constantk _d. This value has been calculated from the rate of accumulation of the polymeric molecules having terminal C=C bonds:k _d=3.5 · 10^–4 s^–1. The rate constant of chain growthk _g has been determined from polymerization kinetics and from the content of active centers:k _g=6.2 L mol^–1 s^–1.For part 3, see ref. 4.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 883–886, May, 1993.     

Structure of the sesquiterpene lactone tanacin

Summary 1. A new sesquiterpene lactone which has been called tanacin has been isolated from the leaves ofTanacetum pseudoachillea C. Winkl.2. On the basis of an interpretation of the PMR spectrum of (I) using the method of multifrequency resonance, the structure of 6-angeloyloxy-1,10-epoxygermacr-4,11(13)-dien-8,12-olide has been established for tanacin.3. The chemical conversion of tanacin into chrysanin has been performed, which confirms the structure found.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 170–174, March–April, 1976.     

Gas-liquid chromatography of triterpene alcohols of the dammarane series from the leaves of the genusBetula

The relative retention times have been determined and the stability has been shown of tetracyclic alcohols of the dammarane series from leaves of Far Eastern species of the genusBetula, and of their TMS ethers, on the stationary liquid phases OV-1 and OV-225 under GLC conditions. The conditions of obtaining the TMS ethers of the compounds under investigation, and the properties of these ethers, have been studied with the aid of GLC analysis, IR spectroscopy, and mass spectrometry.Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Scientific Center, Academy of Sciences of the USSR, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 592–596, September–October, 1983.     

Unsaponifiable substances of the lipids of the leaves ofHibiscus sp

The unsaponifiable substances of the lipids of the leaves ofHibiscus sp. have been studied. The compositions have been found of seven classes of compounds: hydrocarbons, carotenoids, tocopherols, isoprenols, triterpenols, and phytosterols and their esters.The materials of the paper were presented at the IInd International Symposium on the Chemistry of Natural Compounds (SCNC, Turkey, Eskiehir, October 22–24, 1996).Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 40 64 75. Translated from Khimiya Prirodnykh Soedinenii, Vol. 33, No. 1, pp. 49–51, January–February, 1997.     

Plant polysaccharides VII. Polysaccharides ofMorus and their hypoglycemic activity

Water-soluble polysaccharides, pectin substances, and hemicelluloses have been isolated fromMorus leaves, and their qualitative and quantitative compositions have been determined. The polysaccharides obtained by extraction with hot water have been investigated for hypoglycemic activity. A polysaccharide fromMorus alba proved to have the highest sugar-lowering activity.Materials presented at the IInd International Symposium of the Chemistry of Natural Compounds.Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 789–791, November–December, 1997.     

Berberis Alkaloids XXXVIII. Turcamine — A new isoquinoline alkaloid fromBerberis turcomanica

The new isoquinoline alkaloid turcamine (1) has been isolated from the leaves ofBerberis turcomanica, and its structure has been established as 8-hydroxy-7-methoxy-2-methyltetrahydroisoquinoline. A relationship has been found between a substituent at C-8 and the multiplicities of the signals from C-5 and C-6.Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 894–896, November–December, 1996. Original article submitted April 15, 1996.     

Post-infectional changes in the phospholipids of the leaves of a cotton plant variety resistant toVerticillium dahliae

The class and fatty acid compositions of the phospholipids (PLs) of young leaves of healthy, cotton plants of the wilt-resistant variety 175-F and of plants of the same variety infected with the pathogenic fungusVerticillium dahliae Kleb. have been determined. The positional distributions of the fatty acids in the main classes of PLs have been established, and their possible molecular compositions have been calculated. The changes in the composition of the PLs taking place under the influence of infection have been elucidated.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 210–216, March–April, 1997.