Synthetic Studies of Halichondrin B, an Antitumor Polyether Macrolide Isolated from a Marine Sponge. 3. Synthesis of C27-C36 SubunitviaCompletely StereoselectiveC-Glycosylation to the F Ring

Abstract
A stereoselective synthesis of the C27-C36 fragment of halichondrin B starting from L-tartaric acid using an efficient acidcatalyzed C-glycosylation to the F ring as the key step is reported.

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