Studies on the constituents of Chenopodium pallidicaule (Canihua) seeds. Isolation and characterization of two new flavonol glycosides
1995
Rastrelli, L. | Saturnino, P. | Schettino, O. | Dini, A.
Two new flavonol triglycosides have been identified from the seeds of Chenopodium pallidicaule. Their structures were established as isorhamnetin 3-O-beta-D-apiofuranosyl(1 leads to 2)-O-[alpha-L-rhamnopyranosyl(1 leads to 6)]-beta-D-glucopyranoside and quercetin 3-O-beta-D-apiofuranosyl(1 leads to 2)-O-[alpha-L-rhamnopyranosyl(1 leads to 6)]-beta-D-galactopyranoside. The known compounds quercetin 3-(2G-beta-D-apiosyl)rutinoside, 3-(2GAL-alpha-L-rhamnosyl)robinobioside, 3-rutinoside, 3-robinobioside, isorhamnetin 3-(2GAL-alpha-L-rhamnosyl) robinobioside, 3-rutinoside, 3-robinobioside, and kaempferol 3-robinobioside were also found. All structures were elucidated by chemical and spectroscopic methods.
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