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Intramolecular 1,3-dipolar cycloaddition as a tool for the preparation of azaspirocyclic keto aziridines. Synthesis of intermediates for the total synthesis of (±)-cephalotaxine

✍ Scribed by Gary A. Molander; Martin Hiersemann

Book ID
104257307
Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
228 KB
Volume
38
Category
Article
ISSN
0040-4039

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✦ Synopsis

The thermal intramolecular azide-enone 1,3-dipolar cycloaddition to azaspirocyclic keto aziridines 17 and 18 is reported, ct-Hydroxylation and oxidation to the corresponding diketo aziridine 2 provided an intermediate in a synthetic approach toward cephalotaxine 1.

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