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(S)‐4‐C‐β‐D‐Glucopyranosylquinochalcone, which is common to all yellow and red pigments of safflower petals, was synthesized as its stable methyl ether acetate in an overall yield of 3.6% via S‐diastereoselective oxidation of 3‐C‐(per‐O‐acetyl‐β‐D‐glucopyranosyl) phloroacetophenone using bis[(trifluoroacetoxy)iodo] benzene. This synthetic route is different from the previous one, including an oxidative...
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