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We developed a simple and novel desymmetrization strategy toward the total synthesis of ryanodol. The advanced intermediate 1 with six contiguous tetrasubstituted carbons was synthesized from the previously reported 3 by employing two key nucleophilic reactions. The first nucleophilic reaction to C 2 -symmetric tetraketone 2 installed the C6-tetrasubstituted carbon in a regio- and stereoselective...
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