A divergent route to 9, 10-oxygenated tetrahydroprotoberberine and 8-oxoprotoberberine alkaloids: synthesis of (?)-isocorypalmine and oxypalmatine.
Gadhiya S, Ponnala S, Harding WW. A divergent route to 9, 10-oxygenated tetrahydroprotoberberine and 8-oxoprotoberberine alkaloids: synthesis of (?)-isocorypalmine and oxypalmatine. Tetrahedron. 2015 Feb 25; 71(8):1227-1231.