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Stereoselective construction of cis-2,6-disubstituted tetrahydropyrans via the reductive etherification of delta-trialkylsilyloxy substituted ketones: total synthesis of (-)-centrolobine.


ABSTRACT: [reaction: see text] The stereoselective intramolecular reductive etherification of delta-trialkylsilyloxy substituted ketones with catalytic bismuth tribromide and triethylsilane provides a convenient method for the construction of cis-2,6-disubstituted tetrahydropyrans. This method was highlighted in the key step of an expeditious total synthesis of the antibiotic, (-)-centrolobine.

SUBMITTER: Evans PA 

PROVIDER: S-EPMC1821343 | biostudies-literature | 2003 Oct

REPOSITORIES: biostudies-literature

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Stereoselective construction of cis-2,6-disubstituted tetrahydropyrans via the reductive etherification of delta-trialkylsilyloxy substituted ketones: total synthesis of (-)-centrolobine.

Evans P Andrew PA   Cui Jian J   Gharpure Santosh J SJ  

Organic letters 20031001 21


[reaction: see text] The stereoselective intramolecular reductive etherification of delta-trialkylsilyloxy substituted ketones with catalytic bismuth tribromide and triethylsilane provides a convenient method for the construction of cis-2,6-disubstituted tetrahydropyrans. This method was highlighted in the key step of an expeditious total synthesis of the antibiotic, (-)-centrolobine. ...[more]

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