A new strategy for enantioselective assembly of the trisubstituted tetrahydrofuran ring has been established for synthesis of the C1–C12 acid fragment of amphidinolide T series marine macrolides. The key steps involve the SmI 2 -mediated highly enantioselective reductive coupling of an aldehyde with the (1S,2R)-N-methylephedrine-derived crotonate to form the cis-3,4-disubstituted γ-butyrolactone...
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