The tricycle 16 containing a functionalized CD ring is constructed from (S)
-(+)-carvone in 21 steps involving a Baeyer-Villiger oxidation, an Oppenaur
er oxidation and Meerwein-Ponndorf-Verley reduction, a stereospecific Grign
ard addition, and an intramolecular S(N)2 reaction as the key steps. (C) 20
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