Triterpene glycosides of Astragalus and their genins XLI. Cycloexoside from Astragalus exilis

In addition to known glycosides of the cycloartane series — cyclosieversiosides A, E, and F — a new acetylated compound of glycosidic nature — cycloexoside — has been isolated from the roots ofAstragalus exilis A. Kor. (Leguminosae). On the basis of chemical transformations and spectral characteristics, the structure of cycloexoside has been established as 20R,24S-epoxycycloartane-3,6,16,25-tetrol 3-O-(2,3-di-O-acetyl--D-xylopyranoside).Institute of Chemistry of Plant Substances, Uzbekistan Academy of Sciences, Tashkent. Pamir Biological Institute, Tadhikistan Academy of Sciences, Khorog. Translated from Khimiya Prirodnykh Soedinenii, Nos. 3,4, pp. 356–360, May–August, 1992.     

Phenolic compounds of Ononis arvensis the structure of onogenin

Summary From the roots ofOnonis arvensis L. a new isoflavone has been isolated with mp 213–214° C which has been called onogenin. On the basis of the results of a study of its UV, IR, NMR, and mass spectra, the structure of 7-hydroxy-6-methoxy-3,4-methylenedioxyisoflavanone is proposed for onogenin.Khar'kov State Pharmaceutical Institute. Khar'kov Scientific-Research Institute of Pharmaceutical Chemistry. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 354–357, May–June, 1975.     

A new quercetin diglycoside from Campanula glomerata

Summary A new quercetin diglycoside — campanuloside — has been isolated from the herbage ofCampanula glomerata L., and for it the structure of quercetin 3-O--D-galactopyranoside-7-O--D-glucopyranoside has been proposed.Leningrad Institute of Pharmaceutical Chemistry. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 134–136, March–April, 1975.     

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.     

Coumarin composition of the roots, stems, and fruit of Prangos lophoptera

Summary The coumarin composition of the roots, stems, and fruit ofPrangos lophoptera has been studied; in addition to known coumarin derivatives two new compounds have been isolated and have been calledisogosferol (XIII) andlophopterol (XIV).On the basis of a study of the IR, mass, and NMR spectra, and chemical properties of the latter, the most probable structure of 6-(3-hydroxy-1,2-ethoxyisopentyl)-7-methoxycoumarin has been proposed for it.Leningrad Sanitary-Hygienic Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 708–710, November–December, 1974.     

Flavonoid pulicarpin from Pulicaria salviifolia and its hypolipidemic activity

The new compound 3,6-dihydroxy-3,4,5,7-tetramethoxyflavone has been isolated from the epigeal part ofPulcaria salviifolia Bunge and has been called pulicarin. Its structure has been established on the basis of physicochemical and spectral parameters (UV, IR, and mass spectra and PMR). Its hypolipidemic activity has been studied.Institute of Chemistry of Plant Substances, Uzbekistan Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, Nos. 3, 4, pp. 328–330, May–August, 1992.     

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.     

The mannan formed by the yeastBullera tsugae

The structure of an extracellular mannan formed by the yeastBullera tsugae has been studied. It has been shown that the repeating unit of this polysaccharide contains -(13)- and -(14)-bound D-mannopyranose residues in equimolar ratio. A comparison has been made of the polymer under investigation with the extracellular mannan from a yeast of the genusRhodotorula. Leningrad Institute of Pharmaceutical Chemistry. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 746–750, November–December, 1985.     

Steroid compounds from ophiuroids. I. New steroid sulfate from Ophiura sarsi

The sulfate of a steroid polyol has been isolated from the Far Eastern ophiuroidOphiura sarsi, and its structure has been established by chemical and spectral methods as cholest-5-ene-3,4,21-diol 3-(sodium sulfate). No steroid compounds of such structure from ophiuroids have been described previously.Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Branch, USSR Academy of Sciences, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 375–379, May–June, 1988.     

Steroids of the spirostan and furostan series from plants of the genus Allium. XXV. Structure of anzurogenin B from Allium suvorovii and Allium Stipitatum

A new genin of the spirostan series — anzurogenin B having the structure of 2,5-epoxy-(25R)-spirostan-3,6-diol — has been isolated form the collective fruit of the cocultivatedAllium suvorovii Rgl. andAllium stipitatum Rgl. (family Liliaceae).Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 218–221, March–April, 1988.