Tetrahedron Letters p. 7019 - 7022 (1996)
Update date:2022-08-05
Topics:
Sageot, Olivia
Monteux, Daphnee
Langlois, Yves
Riche, Claude
Chiaroni, Angele
Chiral (Z)-enol ethers 7a-7p have been prepared in two steps. Bradsher cycloaddition between such compounds and 2,7-naphthyridinium salt 4b in water or in ter-butanol-water afforded, in some cases with good yield and diastereoselectivity, highly functionalized isoquinoline derivatives, potential intermediates in Manzamine A 1 total synthesis. X-Ray analysis secured the direction of asymmetric induction with enol ether 7l.
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