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Synlett 2003(9): 1263-1266
DOI: 10.1055/s-2003-40358
DOI: 10.1055/s-2003-40358
LETTER
© Georg Thieme Verlag Stuttgart ˙ New York
A Direct Carbometallation-Stereoselective Cycloaddition-Ring Closing Metathesis Route to the Tricyclic ABC Core of Taxoids
Further Information
Received
11 November 2002
Publication Date:
30 June 2003 (online)
Publication History
Publication Date:
30 June 2003 (online)
Abstract
The synthesis of the tricyclic ABC ring-system of Taxol® (paclitaxel) is described. This direct route involves sequential reactions employing the carbometallation of a propargyl alcohol, followed by a cis-alkene tether controlled stereoselective intramolecular Diels-Alder reaction to generate the AB-ring system and ring closing metathesis (RCM) of the pendant allyl substituents to construct the C ring.
Key words
carbometallation - Diels-Alder - taxanes - ring closing metathesis (RCM)
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