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Total syntheses of the reported structures of the rhamnofolane diterpene natural products curcusones I and J in racemic form were achieved. The synthetic strategy features a novel tandem gold‐catalyzed furan formation and furan–allene [4+3] cycloaddition to build the 5,7‐fused ring system with an oxa‐bridge in one step, and a stereoselective exo‐Diels–Alder reaction to form the 6‐membered ring. The...
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