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[摘要]:A short and efficient total synthesis of cytotoxic natural (+)-varitriol has been accomplished in eight steps from gamma-D-ribonolactone and 2,3-dimethylanisole in 41% overall yield. The key features include a highly stereoselective introduction of methyl at a carbonyl group and installation of the side chain with the aromatic portion by Julia-Kocienski olefination at C5 of the starting carbon skeleton. |
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