Abstract
Alkaline hydrolysis of the ether-insoluble resin glycoside (convolvulin) fraction of the seeds of Quamoclit × multifida (syn. Q. sloteri House, Convolvulaceae), a hybrid between Q. pennat and Q. coccinea, gave three new glycosidic acids (maltifidinic acids C, D, and E) along with three known glycosidic acids (quamoclinic acids B, C, and D) and four organic acids (2S-methylbutyric, tiglic, 2R,3R-nilic, and 7S-hydroxydecanoic acids). The structures of the new glycosidic acids were characterized on the basis of spectroscopic data as well as chemical evidence.
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Acknowledgments
We express our appreciation to Mr. H. Harazono of Fukuoka University for his measurement of the FAB-MS.
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Ono, M., Kishida, M., Ikegami, Y. et al. Components of convolvulin from Quamoclit × multifida . J Nat Med 65, 95–102 (2011). https://doi.org/10.1007/s11418-010-0464-z
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DOI: https://doi.org/10.1007/s11418-010-0464-z