Triterpene glycosides ofAstragalus and their genins. VII. Structures of cyclosieversiosides A and C

Svechnikova, A. N.; Umarova, R. U.; Абдуллаев, Н. Д.; Gorovits, M. B.; Abubakirov, N. K.

doi:10.1007/bf00575047

Cited by 7 publications

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“…were extracted with MeOH at room temperature, the extract evaporated, the residue dissolved in H 2 O, and the solution successively partitioned with hexane, CHCl 3 , and BuOH saturated with H 2 O. A part of the BuOH fraction was submitted to vacuum liquid chromatography (VLC; polyamide), further purified by a reversed-phase FC (SiO 2 RP-18) and several separations by normal-phase MPLC (SiO 2 ) to give the five known compounds astragaloside I [7] and astragaloside VII [8], both previously isolated from A. membranaceus Bunge, cyclosiversioside A [9], and cyclosiversiosides E and F [10] [11] which have been isolated before from A. sieversianus Pall. All these known compounds were isolated for the first time in the three studied species.…”

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Cycloartane Glycosides from Three Species of Astragalus (Fabaceae)

Linnek

Mitaine-Offer

Miyamoto

et al. 2011

Helvetica Chimica Acta

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Nine cycloartane-type glycosides were isolated from three species of the genus Astragalus (Fabaceae): From the aerial parts of A. cicer L., two new saponins, cicerosides A and B (1 and 2, resp.), i.e., a tetradesmosidic and tridesmosidic cycloartane-type glycosides besides one known compound, from the roots of A. sempervirens Lam., one known saponin, and from the roots of A. ptilodes Boiss. var. cariensis Boiss., five known compounds. Their structures were established mainly by 600-MHz 2D-NMR techniques ( 1 H, 1 H-COSY, TOCSY, NOESY, HSQC, and HMBC) and mass spectroscopy.

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