Journal of the American Chemical Society p. 11505 - 11515 (2005)
Update date:2022-08-03
Topics:
Marti, Christiane
Carreira, Erick M.
The total synthesis of spirotryprostatin B, a cytostatic spiro[pyrrolidine-3,3′-oxindole] alkaloid, is described. The key step of the synthetic approach consists of the application of the Mgl 2-mediated ring-expansion reaction of a spiro[cyclopropane-1, 3′-oxindole] with an aldimine, leading to rapid assembly of the spirotryprostatin core. The route documents the installation of the prenyl side chain by Julia-Kocienski olefination of a key aldehyde precursor, a transformation that ultimately allows for facile synthesis of analogues and facilitates structure-activity relationships studies.
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