Journal
CHEMISTRY LETTERS
Volume 40, Issue 3, Pages 324-325Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/cl.2011.324
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Funding
- Scientific Research Foundation of Northwest University [PR10035]
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The first total synthesis of kaempferol-3-O-beta-L-arabinopyranosyl-(1 -> 4)-alpha-L-rhamnopyranoside-7-O-alpha-L-rhamnopyranoside (1), a 3,7-triglycosylflavone, which was isolated from the aerial parts of Fagonia taeckholmiana, was accomplished in 13 steps and 9.2% overall yield from commercially available kaempferol. We efficiently employed phase-transfer-catalyzed (PTC) glycosylation for the construction of phenol glycosides. Applying this approach will allow the preparation of derivatives for further study of structure-activity relationships (SAR).
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