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Synlett 2011(2): 187-190
DOI: 10.1055/s-0030-1259287
DOI: 10.1055/s-0030-1259287
LETTER
© Georg Thieme Verlag
Stuttgart ˙ New York
Synthesis of the Spirofungin A Core via a Domino Strategy Consisting of Olefinic Ester Ring-Closing Metathesis and Iodospiroacetalization
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Publikationsverlauf
Received
18 October 2010
Publikationsdatum:
23. Dezember 2010 (online)


Abstract
Olefination of ester 26 which was obtained from acid 20 and alkenol 25 using a reduced titanium ethylidene reagent led to cyclic enol ether 28 which could be cyclized by iodospiroacetalization to the spiroacetal core of the antifungal compound spirofungin A (5).
Key words
acetal - aldol reaction - natural product - ring-closing metathesis - spirofungin
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