A new naphthalenic lactone glycoside, (3R)-cassialactone 9-O-gentiobioside, was isolated from the seeds of Cassia obtusifolia, along with five known compounds, gluco-obtusifolin, glucoaurantio-obtusin, rubrofusarin 6-O-gentiobioside, chryso-obtusin 2-β-D-glucoside, and 2-O-β-D-glucopyranosyloxy-1,7,8-trimethoxy-3-methylanthraquinone. The structure of 1 was elucidated by spectroscopic data analysis, including 1D and 2D NMR and HR-ESI-MS experiments. Its stereochemistry was determined by CD experiment.
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Acknowledgment
This research was funded by a grant (12172MFDS989) from the Ministry of Food and Drug Safety in 2012 and supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (No. NRF-2013R1A2A2A01067336).
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Published in Khimiya Prirodnykh Soedinenii, No. 3, May–June, 2017, pp. 366–367.
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Youn, IS., Han, AR., Choi, J.S. et al. A New Naphthalenic Lactone Glycoside from the Seeds of Cassia obtusifolia . Chem Nat Compd 53, 429–431 (2017). https://doi.org/10.1007/s10600-017-2015-2
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DOI: https://doi.org/10.1007/s10600-017-2015-2