Two new furostanol saponins, tribufurosides B (1) and C (2), were isolated from the fruits of Tribulus terrestris L. With the help of chemical and spectral analyses (IR, MS, 1D NMR and 2D NMR), the structures of two new furostanol saponins were established as 26-O--d-glucopyranosyl-(25S)-5α-furost-20(22)-en-2α,3,26-triol-3-O--d-galactopyranosyl(1 → 2)--d-glucopyranosyl(1 → 2)--d-galactopyranoside (1) and (25S)-5α-furost-20(22)-en-12-one-3, 26-diol-26-O--d-glucopyranoside (2).
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Tribulus terrestris L;
tribufurosides B and C;
Document Type: Research Article
Department of Traditional Chinese Medicine Chemistry, School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
Institute of Traditional Chinese Medicine, Academy of Traditional Chinese Medicine and Material Medica of Jilin Province, Changchun, China
May 1, 2008