Separation of the alkaloids deoxypeganine,peganol, and deoxyvasicinone by the HPLC method

Institute of Chemistry of Plant Substances Academy of Sciences of the Uzbek SSR, Tashkent. Scientific Center for Chromatography, Academy of Sciences of the Uzbek SSR. Institute of the Chemistry and Physics of Polymers, Academy of Sciences of the Uzbek SSR, Tashkent. Iranslated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 297–298, March–April, 1991.     

Stereospecificity of a lysophospholipase from the venom ofVespa orientalis

Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 89 14 75. Institute of Physiology and Biophysics, Academy of Sciences of the Republic of Uzbekistan, 700095, Tashkent, ul. Niyazova, 1. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 625–627, July–August, 1995. Original article submitted November 9, 1994.     

Analysis of glycosides of Allochruza gypsophiloides in the preparation “Allokhrozid” by chromatospectrophotometry

The possibility has been shown of using a readily available method for estimating the level of the main glycoside of the organs of the plant soapwort — acanthophylloside B — in commercial products used in the food and medical industries, and also in samples of the preparation Allokhrozid. The amount of the individual glycoside was calculated in relation to a standard sample of acanthophylloside B.Tashkent Pharmaceutical Institute. Institute of Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 254–256, March–April, 1993.     

Demethylenedelpheline — A new diterpene alkaloid from Delphinium corumbosum

Abu Ali Ibn Sina [Avicenna] Tadzhik State Medical Institute, Dushanbe. Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 50–51, January–February, 1989.     

A mass-spectrometric study of insect pheromones. II. Epoxy compounds

The mass spectra of epoxy compounds have been studied and the positions of the epoxy rings and their configurations have been shown.V. I. Lenin Tashkent State University. A. S. Sadykov Institute of Bioorganic Chemistry, Uzbekistan Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 130–135, January–February, 1992.     

Immunomodulating activity of gossypol derivatives

Information is given on the immunosuppressive activity of a number of gossypol derivatives, and it is shown that practically all the compounds studied are immunotropic. The structural-functional relationship and the dose-dependent nature of the action of the substances obtained are shown.A. S. Sadykov Institute of Bioorganic Chemistry, Uzbek SSR Academy of Sciences, Tashkent. Tashkent State Medical Institute, Uzbek SSR Ministry of Health. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 647–650, September–October, 1988.     

Synthesis and membrane activity of new derivatives of 2,3-benzo-18-crown-6

The acylation of 2,3-benzo-18-crown-6 with carboxylic acids in the presence of polyphosphoric acid has given new acyl derivatives which have been reduced to the corresponding alkyl derivatives. The ionophoric activities of the compounds have been investigated on mitochondrial membranes.Institute of Biochemistry, Academy of Sciences of the Uzbek SSR, Tashkent. Institute of Bioorganic Chemistry, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 634–637, September–October, 1983.     

Protein content of cotton pectin

Central Asian Scientific-Research and Planning and Design Institute of the Food Industry, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 285–286, March–April, 1992.     

Oxidation of hexadec-11Z-en-1-ol by Cr(VI) reagents on polymeric supports

A method is proposed for the oxidation of hexadec-11Z-en-1-ol to hexadec-11Z-enal by Cr(VI) reagents on polymeric supports.A. S. Sadykov Institute of Bioorganic Chemistry, Uzbek Academy of Sciences, Tashkent. V. I. Lenin Tashkent State University. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 252–255, March–April, 1990.     

Molecular and crystal structure of sophoridine N-oxide

The spatial structure of natural sophoridine N-oxide has been studied by x-ray structural analysis. It has been shown that when sophoridine is oxidized, rings B and C, which have the boat form, are deformed in the direction of the twist form.Institute of Bioorganic Chemistry of the Academy of Sciences of the Uzbek SSR, Tashkent, Institute of Crystallography of the Academy of Sciences of the USSR, Moscow, and V. I. Lenin Tashkent State University. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 588–596, September–October, 1981.     

Structure of isosophoridine

A complete x-ray study of the structure of a stereoisomer of the alkaloid matrine -isosophoridine - has been made. Rings A and B have the cis type of linkage. Rings A, B, and C have the chair form and D the half-chair form.Institute of Bioorganic Chemistry, Academy of Sciences of The Uzbek SSR, Tashkent Institute Institute of Crystallography, Academy of Sciences of the USSR, Moscow and V. I. Lenin Tashkent State University. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 460–465, July–August, 1981. Original article submitted February 2, 1981.     

Carbohydrates of cultivated varieties ofAlthea rosea

The polysaccharides of three cultivated varieties ofAlthea rosea have been investigated. The amounts of water-soluble polysaccharides and pectin substances in various organs of the plant have been determined. It has been shown that the maximum amount of water-soluble polysaccharides and pectin substances is present in the flowers. Their monosaccharide compositions have been studied. The physicochemical characteristics of the pectin substances are given.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent. A. Sadykov Institute of Bioorganic Chemistry, Academy of Sciences of the Republic of Uzbekistan. Tashkent. Institute of Botany, Academy of Sciences of the Republic of Uzbekistan, Tashkent. Translated from Khimiya Prirodnykh Soedineii, No. 5, pp. 643–646, September–October, 1993.     

Alkaloids of Nitraria komarovii. XIV. Deoxypeganine N-oxide

Institute of Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedeninii, No. 1, pp. 87–88, January–February, 1993.     

X-ray structural investigation of a derivative of the alkaloid kesselringine

The molecular and crystal structures of 2,6-dimethyl-12-demethylkesselringine methosulfate have been determined by x-ray structural analysis. The relative configurations of the chiral centers in the R, S nomenclature have been established.Institute of Bioorganic Chemistry, Academy of Sciences of the Uzbek SSR, Tashkent; V. I. Lenin State University, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 89–92, January–February, 1986.     

Solanidine and diacetylsevedine from Korolkowia sewerzowii

Institute of Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 440–441, May–June, 1991.     

Structure of lehmannine N-oxide

The molecular and crystal structure of lehmannine in its monohydrate has been studied by x-ray structural analysis. Rings A, B, and C have the chair form and ring D the half-chair form in which the deviations of the atoms from their mean-square plane does not exceed 0.06 Å.Institute of Bioorganic Chemistry, Academy of Sciences of the Uzbek SSR, Tashkent. Institute of Crystallography, Academy of Sciences of the USSR, Moscow. V. I. Lenin Tashkent State University. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 757–763, November–December, 1981.     

Isolation and antibiotic properties of cis-hexadeca-4,7,10,13-tetraenoic acid from the algaScenedesmus obliquus UA-2-6

Summary By the method of checking antibiotic activity, conditions have been selected for the isolation of cis-hexadeca-4,7,10,13-tetraenoic acid from the fatty-acid fractions of the lipids ofScenedesmus obliquus UA-2-6. Its structure has been confirmed and it has been established that this acid possesses a broad spectrum of antibiotic action.Institute of Microbiology, Academy of Sciences of the Uzbek SSR, Tashkent. Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 379–385, May–June, 1978.     

Monitoring the purity of antigepolin with the aid of chromatography in a thin layer of sorbent

A. S. Sadykcv Institute of Bioorganic Chemistry, Academy of sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 296–297, March–April, 1991.     

Alkaloids of the cultivated species Aconitum chasmanthum and Delphinium elatum

Institute of Chemistry of Plant Substances, Uzbek Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 146–148, January–February, 1992.     

Effect of the irradiation of cotton seeds with pulses of concentrated light on the composition of the cottonseed oil

The presowing irradiation of cotton seeds with pulses of concentrated light (PCL) causes a change in a number of indices of the oil. When the seeds are stored, oxidative processes in them are intensified. In the oil of the harvested seeds some indices are restored.Institute of the Chemistry of Plant Substances of the Academy of Sciences of the Uzbek SSR, Tashkent, and S. V. Starodubtsev Institute of Technical Physics of the Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 777–780, November–December, 1980.