Berberis alkaloids. XV. Structure of bargustanine

Bargustanine (I), belonging to a new type of isoquinoline alkaloids, has been isolated from the phenolic fraction of the total alkaloids from the roots ofBerberis vulgaris L. Its structure has been established by chemical and spectral methods.Institute of Chemistry of Plant Substances, Uzbekistan Republic Academy of Sciences, Tashkent. Andizhan State Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 44–47, January–February, 1993.     

Chemical composition of the low-molecular-mass fraction of Yersinia pseudotuberculosis as a function of the temperature of cultivation

The dependence of the chemical composition of the low-molecular-mass fraction of the microbial cells ofYersinia pseudotuberculosis (str. 2781) on the temperature of cultivation (6 and 37°C) has been investigated.Scientific-Research Institute of Epidemiology and Microbiology, Siberian Branch, Russian Academy of Medical Sciences, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, Nos. 3,4, pp. 312–316, May–August, 1992.     

Alkaloids of Aconitum sajanense II. Structure of dehydroacosanine

The new alkaloid dehydroacosanine has been isolated from the roots ofAconitum sajanense Kumin, and its structure has been established by spectral and chemical methods.Institute of Chemistry of Plant Substances, Uzbekistan Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 531–534, September–October, 1992.     

Berberis alkaloids. XVII. Investigation of the alkaloids of Berberis heteropoda

The alkaloid composition of young shoots and leaves ofBerberis heteropoda Schrenk has been studied. In addition to known alkaloids, two new ones have been isolated — N-methyldihydroberberine and 8-oxoberberrubine, the structures of which were established by chemical transformations and a study of spectral properties. Of known alkaloids, berbamunine, aromoline, glaucine, thalicmidine, isocorydine, and reticuline have been found in this plant for the first time. Pseudopalmitine and laudanosine have been found for the first time in plants of the genusBerberis.Andizhan State Medical Institute. Institute of the Chemistry of Plant Substances of Uzbek Republic Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 53–59, January–February, 1993.     

Structure of the alkaloid schoberine

The structure of an alkaloid of a new type, schoberine, isolated from plants of the genusNitraria has been established by the x-ray structural method as perhydro-1,10-propano-4a,8a-diazaphenanthrene. Its chemical and spectral properties have been studied.Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirondnykh Soedinenii, No. 1, pp. 30–34, January–February, 1989.     

Dicaffeolyquinic acids from Helichrysum italicum and Achillea cartilaginea

The quinic acid caffeates of the flowers ofHelichrysum italicum and the herbage ofAchillea cartilaginea have been studied with the use of HPLC,¹³H NMR spectroscopy, and chemical transformations.All-Union Research Institute of Medicinal Plants Scientific-Production Association, Moscow. Translated from Bioorganicheskaya Khimiya, No. 1, pp. 50–55, January–February, 1992.     

8-Acetylexcelsine — A new alkaloid form Aconitum kirinense

The alkaloid 8-acetylexcelsine has been isolated from the epigeal part ofAconitum kirinense Nakai. Its structure has been established with the aid of chemical transformations and spectral characteristics.Institute of Chemistry of Plant Substances Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 258–261, March–April, 1991.     

The structure of tanapsin

Summary A new eudesmanolide-tanapsin—has been isolated from the flower heads ofTanacetum pseudoachillea C. Winkl. On the basis of spectral characteristics and chemical transformations it has been established that tanapsin has the structure of 6-angeloyloxy-1,4-dihydroxyeudesm-11(13)-en-8,12-olide.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 309–312, May–June, 1976.     

Alkaloids of Aconitum coreanum. IV. 14-Hydroxy-2-isobutyrylhetisine N-oxide

A new alkaloid has been isolated from the epigeal part ofAconitum coreanum (Levl.) Rapaics, for which the structure of 14-hydroxy-2-isobutyrylhetisine N-oxide has been established on the basis of spectral characteristics and a chemical transformation.Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 383–386, May–June, 1990.     

Berberis alkaloids. XVI. Structure of berpodine

The alkaloid composition of young shoots ofBerberis heteropoda has been studied. Together with known alkaloids, we have isolated the new dimeric base berpodine and have established its structure by a study of spectral characteristics and by chemical transformations. The known alkaloid isotetrandrine has also been isolated from this plant, for the first time.Institute of Chemistry of Plant Substances Uzbekistan Republic Academy of Sciences, Tashkent. Andizhan State Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 264–267, March–April, 1993.     

Alkaloids of Aconitum talassicum

Three new C-20 diterpene alkaloids (talassamine (I), talassimidine (II), and talassimine (III)) and the known alkaloid lappaconitine have been isolated from the epigeal part ofAconitum talassicum (Ranunculaceae). The structures of the new alkaloids proposed on the basis of spectral characteristics and chemical transformations have been confirmed by an x-ray structural analysis of talassimine.Institute of Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 93–98, January–February, 1991.     

Alkaloids ofZygadenus sibiricus. The structure of verazinine

The alkaloids verazine, veratoylzygadenine, a base with mp 224–226°C, and a new alkaloid verazinine have been isolated fromZygadenus sibiricus (L). A. Gray. It has been established by chemical and spectral methods that verazinine is verazine 3-O--D-glycopyranoside.Eastern Siberian Technological Institute, Ulan-Ude. Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 368–369, May–June, 1985.     

Synthesis of the racemic alkaloid diptaline

The isolation from the plantDipthychocarpus strictus (Cruciferae) of the optically active base diptaline, identified as N-(11-methylsulfinylundecyl)urea, has been reported [1]. A synthesis of the racemic form of this alkaloid has now been achieved.Institute of Organic Chemistry, Urals Branch, Russian Academy of Sciences, Ufa. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 102–105, January–February, 1992.     

Structure of new sesquiterpene lactones from Inula germanica

Summary It has been established that the substance isolated previously fromInula germanica L. is a mixture of two new sesquiterpene lactones: germanin A and germanin B.On the basis of chemical reactions and a study of IR, UV, NMR, and mass spectra, structures (I) and (XVI), respectively, are proposed for germanin A and germanin B.All-Union Scientific-Research Institute of Medicinal Plants. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 578–589, September–October, 1974.     

Oil of the seeds of Hibiscus syriacus

Summary The physical and chemical properties and the fatty acid and triglyceride compositions of the oil ofHibiscus syriacus L. have been investigated. The oil was found to contain 16.87% of the cyclopropenoid acids malvalic and sterculic acids.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 719–722, November–December, 1973.     

Minor phospholipids of Dipthychocarpus strictus and Crambe schugnana

Summary From the combined phospholipids of the seeds ofDipthychocarpus strictus (Fisch.) Trautv. the less polar phospholipid with R _f 0.9 has been isolated, and on the basis of spectra and chemical information it has been identified as N-acylphosphatidylethanolamine. The total fatty-acid composition and also the O- and N-acyls have been determined. From the combined phospholipids of the seeds ofCrambe schugnana Korsh. three minor phospholipids have been isolated: N-acylphosphatidylethanolamine, lysophosphatidylcholine, and phosphatidylserine.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 195–198, March–April, 1977.     

Flavones of the roots of Scutellaria baicalensis

Summary 1. A qualitative analysis of the flavonoid aglycones in the roots ofScutellaria baicalensis Georg. has been performed, and more than 20 substances have been detected in them.2. Six individual flavonoid aglycones have been obtained, and on the basis of chemical and spectral characteristics they have been identified as baicalein, 7-O-methylbaicalein, oroxylin, norwogonin, 7-O-methylnorwogonin, and wogonin.Khar'kov Scientific-Research Institute of Pharmaceutical Chemistry. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 729–733, November–December, 1973.     

Triterpene glycosides and their genins fromThalictrum foetidum. II. The structure of cyclofoetigenin A

A glycoside isolated from the epigeal parts ofThalictrum foetidum (Ranunculaceae) has yielded a new genin — cyclofoetigenin A, the structure of which has been established on the basis of chemical transformations and spectral characteristics as 24S-cycloartane-3,16,25,25-tetraol.Irkutsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 370–375, May–June, 1985.     

Quantitative composition of the resin acids produced by the coniferous species of the USSR

Conclusions 1. The chemical composition of mixtures of resin acids isolated from the balsams of native conifer species, Scotch, Crimean, and Siberian pines andP. hamota andP. pityusa, Norway spruce, and Siberian larch, has been studied by the GLC method.2. The following resin acids are present in the balsams: pimaric, sandaracopimaric, levopimaric, palustric, isopimaric, abietic, dehydro- and dihydroabietic, neoabietic, four acids of undetermined chemical structure, and fatty acids. The balsams differ in the quantitative composition of the resin acids that they contain.Institute of Physical Organic Chemistry, Academy of Sciences of the Belorussian SSR. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 539–541, September–October, 1970.