Synthesis p. 419 - 423 (1989)
Update date:2022-08-03
Topics:
Bestmann, Hans Juergen
Schobert, Rainer
Two methods for closure of macrocyclic lactone rings by intramolecular Wittig reaction of (ω-oxoalkoxy)carbonylmethylenetriphenylphosphoranes are described.The latter are easily accessible by addition of the appropriate (free or protected) ω-hydroxyalkanals to the cumulated ylide triphenylphosphoranylideneketene.Examples are then given for the use of these methods in natural product synthesis.
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