An approach towards the advanced scaffold 21 as an intermediate for salinosporamide A 1 synthesis has been developed starting from the known ulose 3. This strategy involves the 2-hydroxyethyl moiety installation at the C-5 position via a Wittig transformation followed by Pd/C-mediated hydrogenation of the conformationally constrained alkene 9 in a stereoselective manner, and the Overman rearrangement, thus allowing full control over the configuration of the newly generated quaternary stereocentre with an amino group in 18. (C) 2016 Elsevier Ltd. All rights reserved.
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Univ Paris 05, Fac Pharm, CNRS, UMR 8638, F-75270 Paris, FranceUniv Paris 05, Fac Pharm, CNRS, UMR 8638, F-75270 Paris, France
Barbion, Julien
Sorin, Geoffroy
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Univ Paris 05, Fac Pharm, CNRS, UMR 8638, F-75270 Paris, FranceUniv Paris 05, Fac Pharm, CNRS, UMR 8638, F-75270 Paris, France
Sorin, Geoffroy
Selkti, Mohamed
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Univ Paris 05, Fac Pharm, CNRS, UMR 8015, F-75270 Paris, FranceUniv Paris 05, Fac Pharm, CNRS, UMR 8638, F-75270 Paris, France
Selkti, Mohamed
Kellenberger, Esther
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Univ Strasbourg, Fac Pharm, CNRS, UMR 7200, F-67400 Illkirch Graffenstaden, FranceUniv Paris 05, Fac Pharm, CNRS, UMR 8638, F-75270 Paris, France
Kellenberger, Esther
Baati, Rachid
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Univ Strasbourg, Fac Pharm, CNRS, UMR 7199,Lab Syst Chim Fonctionnels, F-67400 Illkirch Graffenstaden, FranceUniv Paris 05, Fac Pharm, CNRS, UMR 8638, F-75270 Paris, France