A practical synthesis of the F-ring of halichondrin B via ozonolytic desymmetrization of a C(2)-symmetric dihydroxycyclohexene |
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Authors: | Jiang Lei Martinelli Joseph R Burke Steven D |
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Affiliation: | Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706-1396, USA. |
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Abstract: | C(2)-symmetric dihydroxycyclohexene 1 was desymmetrized via a one-pot Criegee ozonolysis/acylation protocol to afford acetal-lactone 2. Installation of the allyl side chain on the convex face of the bicyclic system and subsequent reduction provided the desired tetrahydrofuran 4 with the correct relative and absolute stereochemistries. Simple functional group manipulations led to the desired F-ring module 3 of halichondrin B. |
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