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- W1979214978 abstract "Abstract In search for bioactive compounds from the roots of Sanguisorba officinalis L. (Rosaceae), four new dimeric triterpene glucosides, namely sanguidioside A, B, C, and D ( 1–4 ) were isolated. Alkaline hydrolysis of 1–2 afforded the corresponding dimeric aglycones ( 1a and 2a ). Meanwhile, a ready intra-molecular transesterification was observed, providing dimeric triterpenes 1b and 2b . Alkaline hydrolysis of the crude dimmeric saponin also provided a new dimeric triterpene, sanguidiogenin ( 9 ). The structures of all these compounds are elucidated via spectroscopic and chemical methods, and are further confirmed by the X-ray diffraction analysis of the dimeric aglycone 2a . Compound 3 represents the first dimeric saponin of an oleanolic acid and an ursonic acid derivative, while compound 4 is the first dimeric saponin of oleanolic acid derivatives." @default.
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- W1979214978 date "2004-12-01" @default.
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- W1979214978 title "Four new dimeric triterpene glucosides from Sanguisorba officinalis" @default.
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- W1979214978 doi "https://doi.org/10.1016/j.tet.2004.09.045" @default.
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