Cytotoxic Triterpenoid Saponins from Aesculus glabra Willd.
Twenty-four acylated polyhydroxyoleanene saponins were isolated from the seeds of Aesculus glabra. Sixteen of them, namely aesculiosides G1-G16 (1-16), were determined as compounds by spectroscopic and chemical analysis. The structural features of all 24 saponins are: (1) arabinofuranosyl units affixed to C-3 of the glucuronopyranosyl unit in the trisaccharide chain; (2) no 24-OH substitution; (3) C-2 sugar moiety substitution of the 3-O-glucuronopyranosyl unit is either glucopyranosyl or galactopyranosyl. The features of these isolated saponin structures provide more evidence for chemical taxonomy within the genus Aesculus. The cytotoxicity of the aesculiosides (1-16) were tested against A549 and PC-3 cancer cell lines with GI₅₀ from 5.4 to >25 μM.
Yuan, Wei; Wang, Ping; Deng, Guangrui; and Li, Shiyou, "Cytotoxic Triterpenoid Saponins from Aesculus glabra Willd." (2012). NCPC Publications and Patents. 16.
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Originally published in Phytochemistry 2012 (75) doi: 10.1016/j.phytochem.2011.11.012
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