Stereoselective synthesis of northern fragment of eribulin mesylate is reported by
coupling of the C1–C13 fragment with the C28–C35 fragment. The key steps involved
in this synthesis are butyllithium-facilitated coupling between sulfone and aldehyde,
then Dess–Martin periodinane oxidation followed by samarium(II) iodide mediated desulfonylation.
Key words
total synthesis - eribulin mesylate - desulfonylation -
d-mannose - samarium(II) iodide