Tomentoside I, a new tetranor-cycloartane triterpene glycoside was isolated fromAstragalus tomentosus. Its structure was established as 6α-acetoxy-23-ethoxy-16β,23(R)-epoxy-24,25,26,27-tetranor-9,1 9-cyclolanosta-3β-O-xyloside, on the basis of spectral evidence. 3-O-Methyl-chiro-inositol ether was also isolated and identified. The known compound, astragaloside II, previously isolated fromA. spinosus, was also identified.
Cycloartane triterpene glycosides from Egyptian Astragalus species / N.A. El-Sebakhya, F.M. Harraza, R.M. Abdallaha, A.M. Asaada, F. Orsini, F. Pelizzoni, G. Sello, L. Verotta. - In: PHYTOCHEMISTRY. - ISSN 0031-9422. - 29:10(1990), pp. 3271-3274. [10.1016/0031-9422(90)80198-P]
Cycloartane triterpene glycosides from Egyptian Astragalus species
F. OrsiniPenultimo
;G. Sello;L. VerottaUltimo
1990
Abstract
Tomentoside I, a new tetranor-cycloartane triterpene glycoside was isolated fromAstragalus tomentosus. Its structure was established as 6α-acetoxy-23-ethoxy-16β,23(R)-epoxy-24,25,26,27-tetranor-9,1 9-cyclolanosta-3β-O-xyloside, on the basis of spectral evidence. 3-O-Methyl-chiro-inositol ether was also isolated and identified. The known compound, astragaloside II, previously isolated fromA. spinosus, was also identified.
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