Abstract
Twelve cyclolanstane-type saponins including six new ones, astrolanosaponins A1 (1), A2 (2), B (3), C (4), D (5), and E (6) were obtained from the stem of Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) Hsiao, and their structures were elucidated by chemical and spectroscopic methods. Of the known ones, cycloastragenol-3-O-β-D-glucopyranoside (7), astraverrucin II (8), cycloaraloside E (9), huangqiyenin A (10), and huangqiyenin B (11) were isolated from the species first. Meanwhile, compounds 1–3, 5–9, and aleksandroside I (12) showed inhibitory effects on triglyceride accumulation in HepG2 cells.
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Acknowledgments
This project was supported by the Program for New Century Excellent Talents in University (NCET-12-1069), the Program for Tianjin Innovative Research Team in University (TD12-5033), and the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT IRT_14R41).
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Wang, T., Ruan, J., Li, X. et al. Bioactive cyclolanstane-type saponins from the stems of Astragalus membranaceus (Fisch.) Bge. var. mongholicus (Bge.) Hsiao. J Nat Med 70, 198–206 (2016). https://doi.org/10.1007/s11418-015-0959-8
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DOI: https://doi.org/10.1007/s11418-015-0959-8