Polysaccharides of saponin-bearing plants XI. An investigation of the polysaccharides ofAcanthophyllum knorringianum

Polysaccharides have been isolated from the epigeal organs and roots ofAcanthophyllum knorringianum and their quantitative levels and qualitative compositions have been established. A neutral polysaccharide of the epigeal organs belongs to the mannoarabinoglucogalactan type, and a neutral polysaccharide from the roots, to the arabinoglucogalactans.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (371) 120 64 75. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 169–170, March–April, 1999.     

Plant polysaccharides. IX. Isolation and anticoagulant activity of the polysaccharides ofLagochilus usunachmaticus

A polysaccharide possessing pronounced direct-action anticoagulant activity has been isolated from the epigeal part ofLagochilus usunachmaticus.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, No. 5, pp. 690–692, September–October, 1997.     

Phytoecdysteroids of plants of the genusSilene. VIII. 2-Deoxyecdysterone 3-acetate fromSilene praemixta

A phytoecdysteroid, 2-deoxyecdysterone 3-acetate, has been isolated from the epigeal organs ofSilene praemixta M. pop.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 60–62, January–February, 1985.     

Polysaccharide composition ofPolygonum aviculare

A polysaccharide isolated from the epigeal parts ofPolygonum aviculare has been fractionated. It has been shown that the initial polysaccharide consists of at least four fractions differing in their monosaccharide compositions and physico-mechanical properties.I. P. Pavlov Ryazan' Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 619–622, September–October, 1985.     

Polysaccharides of saponin-bearing plants VII. Study of the polyssaccharides of the roots ofAllochrusa paniculata

Water-soluble polysaccharides, pectin substances, and hemicelluloses have been isolated from the roots ofAllochrusa paniculata. According to the results of analysis, the neutral polysaccharide found belongs to the glucoarabinogalactan type and differs from the neutral polysaccharide of the roots of A. gypsophiloides by the presence of arabinose.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. 549–551, July–August, 1995. Original article submitted October 24, 1994.     

Lipids ofSilene brahuica

The qualitative and quantitative compositions of the lipid complex of the epigeal part ofSilene brahuica Boiss. (family Caryophyllaaceae) have been studied. The fatty acid composition of the acyl-containing lipids has been determined. Some differences have been found in the compositions of the fatty acids of the neutral lipids and the phospholipids.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 512–514, July–August, 1993.     

Alkaloids ofNitraria komarovii. XV. Vasicinone and deoxyvasicinone N-oxides

Two new alkaloids have been isolated from the epigeal part ofNitraria komarovii — the N-oxides of vasicinone and of deoxyvasicinone. Their structures have been established on the basis of spectral results and chemical transformations.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 580–582, July–August, 1993.     

Phytoecdysteroids of plants of the genus Silene. IX. Ecdysterone 22-O-benzoate from Silene scabrifolia

An ecdysteroid which has proved to be ecdysterone 22-O-benzoate has been isolated from the epigeal organs ofSilene scabrifolia Kom.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 77–80, January–February, 1986.     

Phlomoside D — an iridoid glycoside fromPhlomis regelii

A new iridoid – phlomoside D- has been isolated from the epigeal organs ofPhlomis regelii (M. Pop). Its structure has 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. 551–553, July–August, 1996. Original article submitted February 5, 1996.     

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.     

Arylnaphthalene lignans ofHaplophyllum dauricum. The structure of daurinol

The arylnaphthalene lignans justicidin B and daurinol I have been isolated from the epigeal part ofHaplophyllum dauricum (L.) G. Don.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 295–297, May–June, 1981.     

Alkaloids ofNitraria komarovii XVII. Peganine N-oxide, N-allylschoberine, and dehydronitramidine

Three new alkaloids have been isolated from the epigeal part ofNitraria komarovii — peganine N-oxide, N-allylschoberine, and dehydronitramidine. Their structures have been determined on the basis of chemical transformations and spectral results.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. 6, pp. 780–783, November–December, 1994.     

Diterpenoids ofPulicaria salviifolia. I. Structures of salvin and salvinin

Two new diterpenoids of the clerodane series — salvin and salvinin — have been isolated from the epigeal part ofPulicaria salviifolia Bgl. in Mem. A structure and a most probable stereochemistry are proposed.Presented at the VIIth Indo-Soviet Symposium on the Chemistry of Natural Compounds [16].Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 201–205, March–April, 1985.     

The investigation of natural compounds by HPLC. III. A study of sesquiterpene lactones of the guaiane type by microcolumn HPLC

Two comparable methods of microcolumn high-performance liquid chromatography (HPLC) have been developed for the sesquiterpene lactones leucomicin, matricarin, austricin, and anhydroaustricin and for the drug isolated from the epigeal part ofArtemisia leucodes.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 526–529, July–August, 1993.     

Alkaloids ofNitraria komarovii. X. Structures of tetrahydronitramarine,tetrahydrokomarovinine, dihydroisokomarovine,and tetrahydroisokomarovine

The alkaloid nitraraine and four new bases have been isolated for the first time from the epigeal part ofNitraria komarovii. Their structures have been established with the aid of chemical transformations and spectral characteristics: tetrahydronitramarine, tetrahydrokomarovinine, dihydroisokomarovine, and tetrahydroisokomarovine. Passages have been effected to nitramarine, komarovinine, isokomarovinine, and komarovidinine. Tetrahydroisokomarovine is a new alkaloid, while this is the first time that tetrahydronitroamarine, tetrahydrokomarovinine, and dihydroisokomarovine have been found in nature. Nitrarine, isonitrarine, and schoberidine have been isolated from the seeds with fruit.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 61–67, January–February, 1990.     

Alkaloids of the epigeal part ofAconitum kirinense

Lepenine and the new alkaloid lepenine N-oxide have been isolated from the epigeal part ofAcontium kirinense.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 734–736, September–October, 1993.     

Oxytropis alkaloids II. Structure of oxytriphine

The new alkaloid oxytriphine, the parent of natural 2-oxazoline derivatives, has been isolated from the epigeal part ofOxytropis trichophysa; and its structure has been established as (5S)-(+)-2,5-diphenyl-2-oxazoline. (-)-N-Benzoyl-2-phenyl-2-hydroxyethylamine and benzoic acid have been detected in this plant for the first time. A hypothesis of the possible biogenetic interrelationship of the compounds isolated is put forward.Institute of the Chemistry of Plant Substances. Uzbekistan Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii. No. 6, pp. 873–876, November–December, 1993.     

Phytoecdysteroids of plants of the genus Silene. XVII. Ecdysterone 22,25-di-O-benzoate from Silene scabrifolia

The new phytoecdysteroid ecdysterone 22,25-di-O-benzoate (IV) has been isolated from the epigeal organs ofSilene scabrifolia Kom. The alkaline hydrolysis of (IV) gave ecdysterone 25-O-benzoate and ecdysterone (I). Details of the IR, UV, mass, PMR, and¹³C NMR spectra of compound (IV) are given.Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 363–366, May–June, 1990.     

Phytoecdysteroms of plants of the genusSilene. XVII. Tomentesterone fromSilene tomentella

The new ecdysteroid tomentesterone A has been isolated from the epigeal part ofSilene tomentella Schischk. Its structure has been established by spectral studies 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. 5, pp. 714–719, September–October, 1995. Original article submitte March 27, 1995.     

Quantitative determination of the total iridoids in plants of the genusLagochilus

Chromatophotocolorimetric and accelerated photocolorimetric methods of determining 8-O-harpagide and harpagide in the epigeal parts of the plantsL. platycalyx andL. setulosus have been developed using 8-O-acetylharpagide as the standard substance.Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 723–727, November–December, 1994.