Stereocontrolled C-N Ring Construction: The Pyne Synthesis of Hyacinthacine B3
Keiji Maruoka of Kyoto University found (Org. 8-Bromoquinazoline-2,4-diol Purity Lett. 2010, 12, 1668. DOI: 10.1021/ol100104v) that the diazo amide 1 derived from the Oppolzer sultam condensed with the imine 2…