Tetrahedron Letters p. 3095 - 3098 (1987)
Update date:2022-08-02
Topics:
Berlage, Ulrich
Schmidt, Juergen
Milkova, Zenka
Welzel, Peter
A synthetic route to (+)-1 commencing from (S)-malic acid and 20 is reported.Key steps are the coupling of 20 and 15 to give 21, an intramolecular Wittig reaction (25-<*>27), and an oxidative cyclization (28-<*>1).
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