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flavocommelin/commelina
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Total synthesis of flavocommelin, a component of the blue supramolecular pigment from Commelina communis, on the basis of direct 6-C-glycosylation of flavan.
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We succeeded in a first total synthesis of flavocommelin (1), a component of the blue supramolecular pigment, commelinin (2), from Commelina communis, by direct 6-C-glycosylation of the flavan 4 using perbenzylglucosyl fluoride 8 in the presence of MS 5 angstroms in CH2Cl2 and a catalytic amount of
Concise synthesis of flavocommelin, 7-O-methylapigenin 6-C-, 4'-O-bis-β-D-glucoside, a component of the blue supramolecular pigment from Commelina communis.
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Flavocommelin, 7-O-methylapigenin 6-C-, 4'-O-bis-β-D-glucoside, was synthesized in 9 steps from the C-glycosylation of 6-O-benzy-4-O-methylphloroacetophenone via the introduction of a cinnamoyl residue by aldol condensation and the formation of a C-ring by regioselective and oxidative ring-closure
Antioxidant constituents in the dayflower (Commelina communis L.) and their alpha-glucosidase-inhibitory activity.
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The dayflower, Commelina communis L., contains 1-deoxynojirimycin (DNJ) and (2R,3R,4R,5R)2,5-bis(hydroxymethyl)-3,4-dihydroxypyrrolidine (DMDP), potent alpha-glucosidase inhibitors. The extracts and powder of this herb are important food materials for prophylaxis against type 2 diabetes. Eleven
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