Gadhiya, Satish A divergent route to 9, 10-oxygenated tetrahydroprotoberberine and 8-oxoprotoberberine alkaloids: synthesis of (±)-isocorypalmine and oxypalmatine. [electronic resource] - Tetrahedron Feb 2015 - 1227-1231 p. digital Publication Type: Journal Article ISSN: 0040-4020 Standard No.: 10.1016/j.tet.2015.01.004 doi