Cavicularin is a complex natural product isolated from the liverwort Cavicularia densa. It belongs to the class of macrocyclic bis(bibenzyl) compounds and features a unique, strained 14-membered macrocyclic ether ring incorporating two ethano bridges and multiple hydroxyl groups.
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Synthetic strategy to cavicularin (1).
Total synthesis of cavicularin (1) and riccardin C (20). Ts =p-toluenesulfonyl, TTMSS=tris(trimethylsilyl)silane, AIBN=azo-bis(isobutyronitrile).
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