Triterpene glucosides of Dipsacus azureus. III. Structure of dipsacobioside

A new triterpene glycoside — dipsacobioside — has been isolated from the root of theDipsacus azureus Schrenk. By chemical transformation and spectral methods its structure has been established as hederagenin 3-O-[O--L-rhamnopyranosyl-(14)--L-arabinopyranoside].Institute of Organic Chemistry, Kirgiz SSR Academy of Sciences, Frunze. Institute of the Chemistry of Plant Substances, Uzbek SSR Academy of Sciences, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 204–207, March–April, 1989.     

Triterpene glycosides of silphium perfoliatum. V. The structure of silphioside A

From the epigeal part ofSilphium perfoliatum L. we have isolated glycoside F, identified as oleanolic acid 3-0--D-glucopyranosiduronic acid and a new triterpene glycoside — silphioside A — for which the structure of oleanolic acid 28-0--D-glucopyranoside 3-0-(methyl -D-glucopyranosiduronate) has been established.Pyatigorsk Pharmaceutical Institute, and Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 63–66, January–February, 1986.     

Triterpene glycosides of Thalictrum squarrosum. II. Molecular and crystal structure of squarrofuric acid

The structure of squarrofuric acid (an artifactual genin fromThalictrum squarrosum) has been confirmed by x-ray structural analysis and the configurations of the C13, C14, C17, C20, and C22 asymmetric centers have been established, which has enabled this compound to be assigned to the lanostane series with the following structure: 3,30-dihydroxy-20(S),22(S)-22,25-epoxylanost-9(11)-en-21-oic acid.Novosibirsk Institute of Organic Chemistry, Siberian Branch of the USSR Academy of Science. Irkutsk Institute of Organic Chemistry, Siberian Branch of the USSR Academy of Sciences. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 533–537, July–August, 1987.     

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.     

Minor diterpenoids of Teucrium chamaedrys

Summary The structures of four new diternenoids ofTeucrium chamaedrys L.—teucrins B, E, F, and G, be-longing to the group of rearranged labdanes — has been shown. For teucrins E and F, the trans-(5, 10)-linkage of rings A/B has been shown.Institute of Chemistry, Academy of Sciences of the Moldavian SSR. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 589–598, September–October, 1974.     

Triterpene glycosides of Astragalus and their genins XXXIX. Cycloaraloside D from Astragalus amarus

The structure of a triterpene glycoside of the cycloartane series — cycloaraloside D, isolated from the roots ofAstragalus amarus Pall. (Leguminosae) — has been established on the basis of chemical transformations and spectral characteristics. Cycloaraloside D is 20R, 24S-epoxycycloartane-3, 6, 16, 25-tetraol 3-0-[0--L-rhamnopyranosyl-(1 2)--D-glucopyranoside].Institute of Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 526–528, July–August, 1991.     

Triterpene glycosides of Dianthus deltoides. I

Summary FromDianthus deltoides L. we have isolated three new triterpene glycosides: dianthosides A, B, and C. It has been shown that dianthoside A is the 3-O--glucopyranoside and dianthoside B the 3-O-[O--D-glucopyranosyl-(1 6)--glucopyranoside] of gypsogenic acid. Some information on the structure of dianthoside C — a new glycoside of gypsogenin — has been obtained.A. E. Arbuzov Institute of Organic and Physical Chemistry, Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 33–38, January, 1971.     

Coronillobiosidol — A cardenolide glycoside from seeds of Coronilla scorpioides

The seeds ofCoronilla scorpioides have yielded a new cardenolidic bioside, which has been called coronillobiosidol and has the structure of 3-O-[O--D-glucopyranosyl-(1 4)--D-glucopyranosyl]-14, 19-dihydroxy-5-card-20(22)-enolide.Khar'kov State Pharmaceutical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 726–728, September–October, 1988.