Cyclocephaloside I: A Novel Cycloartane-Type Glycoside from <i>Astragalus microcephalus</i>
Erdal BedirDepartment of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, TR-06100 Ankara, Turkey, and Swiss Federal Institute of Technology (ETH) Zurich, Department of Pharmacy, CH-8057 Zürich, Switzerlandİhsan ÇalışDepartment of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, TR-06100 Ankara, Turkey, and Swiss Federal Institute of Technology (ETH) Zurich, Department of Pharmacy, CH-8057 Zürich, SwitzerlandOliver ZerbeHacettepe UniversityOtto SticherHacettepe University
1998en
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Annotatsiya
A novel cycloartane-type glycoside, cyclocephaloside I (1) was isolated from the roots of Astragalus microcephalus in addition to known glycosides cyclocanthoside E (2) and astragaloside IV (3). The structure of 1 was determined by spectral (IR, 1H and 13C NMR, and FABMS) and chemical (acetylation) methods and established as 20,25-epoxy-3β-(β-d-xylopyranosyl)oxy-6α-(β-d-glucopyranosyl)oxy-cycloartane-16β,24α-diol.
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