Alkaloids ofRhinopetalum stenantherum. Structure of stenanzidine

Three new alkaloids have been isolated from the combined alkaloids of the epigeal part ofRhinopetalum stenantherum: stenanzidine, stenanzidinine, and stenanzamine.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 341–344, May–June, 1984.     

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.     

Stereochemistry of alkhanin and alkhanol

The stereochemistry of alkhanin and alkhanol — sesquiterpene lactones isolated fromArtemisia fragrans — has been established.V. L. Komarov Institute of Botany, Academy of Sciences of the Azerbaidzhan SSR, Baku. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 488–490, July–August, 1979.     

Structure of diptocarpilidine

Diptocarpilidine (bp 193–194° (4 mm)) has been isolated from the epigeal part and seeds ofDiptychocarpus strictus (Fisch) Trautv., and its structure has been established as 1-cyano-6-methylsulfinylhexane.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 84–86, January–February, 1984.     

Components ofHaplophyllum obtusifolium

Skimmianine, folimine, benzamide, and new alkaloid haplotusine (mp 118–119°C, C₁₁H₁₁NO₃, M⁺ 205) have been isolated from the epigeal part ofHaplophyllum obtusifolium Ledeb. growing in the environs of Kora-Koly, Turkmen SSR. By the analysis of spectral characteristics it has been established that haplotusine has the structure of 1,4-dimethoxy-2-quinolone.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 635–636, September–October, 1984.     

The structure of xeroferin

Summary From the roots ofFerula xeromorpha Eug. Kor. (xeromorphic giantfennel) an ester of undescribed alcohol — himachal-2-ene-4,7-diol — and isovanillic acid has been isolated.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 581–584, September–October, 1978.     

Alkaloids ofDicentra

Methanolic extraction ofDicentra spectabilis L., collected in the flowering period in the botanical garden of Pyatigorsk Pharmaceutical Institute, has yielded 0.17% of combined alkaloids from the epigeal part and 0.25% from the roots. By the separation of these materials, dihydrosanguinarine, sanguinarine, scoulerine, cheilanthifoline, corydine, and protopine have been obtained.Dicentra peregrina Rudolph, collected in the flowering period on the island of Sakhalin, has yielded 1.8% of combined alkaloids from the epigeal part and 1.51% from the roots. From these combined materials have been isolated isocorydine, corydine, dicentrine, protopine, dihydrosanguinarine, sanguinarine, cheilanthifoline, bicuculline, lederine, scoulerine, isoboldine, predicentrine, reticuline, and allocryptopine.Institute of the Chemistry of Plant Substances. Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 79–81, January–February, 1984.     

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.     

A new sesquiterpene lactone — Alkhanol fromArtemisia fragrans

The structure of the new sesquiterpene lactone alkhanol fromArtemisia fragrans has been studied. On the basis of spectral and chemical characteristics a most probable structure has been suggested for alkhanol.V. L. Komarov Institute of Botany, Academy of Sciences of the Azerbaidzhan SSR, Baku. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 326–329, May–June, 1979.     

Immobilization of the enzyme L-asparaginase fromE. coli on polysaccharides IV. Covalent binding with dialdehyde-dextran

The synthesis has been effected of immobilizedE. coli L-asparaginase on medical dextran — poliglyukin. The influence of the bound polymer on some physicochemical properties of the final products have been studied. An increased resistance to heat and stability on storage of the immobilized forms of L-asparagine in comparison with a native enzyme has been found. It has been shown that the polymer modification of L-asparaginase leads to a decrease in the antigenic affinity of the immobilized enzyme as compared with the native enzyme.Institute of Organic Synthesis, Academy of Sciences of the Latvian SSR, Riga. All-Union Scientific-Research Technological Institute of Antibiotics and Enzymes for Medical Purposes, Leningrad. A. Kirkhenshtein Institute of Microbiology, Academy of Sciences of the Latvian SSR, Riga. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 766–771, November–December, 1986.     

Phytoecdysones ofRhaponticum integrifolium IV. 24(28)-Dehydromakisterone A

Summary A new phytoecdysone has been isolated from the flower heads ofRhaponticum integrifolium, and for it the structure of 24(28)-dehydromakisterone A has been established.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 463–465, July–August, 1978.     

Structure of ferulide

The structure of a new sesquiterpene lactone — ferulide fromFerula penninervis Regel et Schmalh — has been established on the basis of its spectral characteristics. This compound has the composition C₂₀H₂₄O₅, mp 135–137°C.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 240–242, March–April, 1987.     

Dynamics of the accumulation of the alkaloids ofReseda luteola structure of lutine and lutinine

Summary The qualitative and quantitative changes in the composition of the combined bases inReseda luteola during the vegetation periods have been studied. From the epigeal part of the plant we have isolated cinnamamide and two new alkaloids: lutine and lutinine. A study of the spectral characteristics and the mechanism of fragmentation has shown that lutine has the structure of 2-anilino-1,4-naphthoquinone and lutidine that of 4-anilino-2-phenylamino-1,2-dihydronaphthalen-1-one.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. M. I. Kalinin Andizhan Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 826–830, November–December, 1977.     

Low-molecular-mass bioregulators. III. Synthesis of tridec-4E-enyl acetate — The sex pheromone ofKeiferia lycopersicella

A new method has been developed for the synthesis of tridec-4E-enyl acetate — the sex pheromone of the tomato pinworm Keiferia lycopersicella.Institute of Organic Chemistry, Academy of Sciences of the Armenian SSR, Erevan. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 102–106, January–February, 1990.     

Alkaloids ofCorydalis

Summary Fifteen bases have been isolated from three species ofCorydalis. Dihydrosanguinarine has been isolated from a plant of the genusCorydalis for the first time.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 612–615, September–October, 1975.     

Reductive amination ofl-menthol by aliphatic nitriles

The reductive amination ofl-menthol with aliphatic nitriles has been studied. A probable scheme of the mechanism of the reaction has been put forward and the stereochemical composition of its products has been determined. It has been established with the aid of the¹³C NMR method that the reaction forms a mixture of isomeric optically-active N-alkylmenthyl-, -neomenthyl-, -isomenthyl-, and-neoisomenthyl-amines in a ratio of 54:24:17:5. The absolute configurations of the amines obtained have been determined.Institute of Physical Organic Chemistry, Academy of Sciences of the Belorussian SSR, Minsk. Institute of Chemical and Biological Physics, Academy of Sciences of the Estonian SSR, Tallin. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 312–317, May–June, 1981.     

Metabolites of the pathogenic fungusVerticillium dahliae III. The lipid composition ofVerticillium dahliae

Summary The compositions of the neutral lipids of the mycelium and of the culture liquid from the pathogenic fungusVerticillium dahliae Kleb. have been investigated for the first time. The fatty-acid compositions of the main lipid fractions and the glyceride composition of the triglyceride fraction have been determined. The main acids of all the fractions are the 16:0 and 18:1 acids and in the triglyceride fraction, additionally, the 18:2 acid. Diisobutyl phthalate has been found in the combined neutral lipids of the fungal mycelium.V. I. Lenin Tashkent State University, Institute of the Chemistry of Plant Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 431–435, July–August, 1976.     

The structure of the main saponin fromClematis songarica

Summary The structure of the main saponin fromClematis songarica Bge. has been established; it is an octaoside of hederagenin.Institute of Chemistry, Academy of Sciences of the Moldavian SSR. M. V. Frunze Simferopol' State University. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 470–474, July–August, 1975.