Abstract
[reaction: see text] The nonaldol aldol process developed in our laboratories has been applied to the synthesis of a C(1)-C(11) fragment 22 of the novel macrocyclic cytotoxic agents tedanolide and 13-deoxytedanolide 1 and 2. The commercially available hydroxy ester 7 was converted in 24 steps into compound 22 using two nonaldol aldol reactions.
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