anti; syn-oxazine; chiral building block; (+)-hyacinthacine A2; (?)-7-epi-australine; (+)-broussonetine F
Issue Date
2013-01
Publisher
American Chemical Society
Citation
Organic Letters, 2013, 15(1), P.132~135
Abstract
New synthetic routes to (±)-α-lycorane and (±)-1-deoxylycorine were exploited. The endo-cycloadduct of 3,5-dibromo-2-pyrone with styrene-type dienophile provided the pivotal intermediate for the syntheses of the titled natural products.