The enantioselective synthesis of the C5 similar to C13 (2) and C20 similar to C28 (3) segments, which are promising synthetic intermediates toward the total synthesis of the 18-membered macrolide antibiotic, concanamycin A (1), were described. (C) 1998 Elsevier Science Ltd. All rights reserved.
The First Total Synthesis of Concanamycin F (Concanolide A)
A highly stereoselective total synthesis of the macrolide antibiotic concanamycin F (1), a specific and potent inhibitor of vacuolar H(+)-ATPase, has been achieved by a convergent route involving the synthesis and coupling of its 18-membered tetraenic lactone and beta-hydroxyl hemiacetal side chain subunits. The C1-C19 18-membered lactone aldehyde 4 was synthesized through the intermolecular Stille