Collect. Czech. Chem. Commun.
1980, 45, 2351-2359
https://doi.org/10.1135/cccc19802351
Isomerization of ketolactone of oxabicyclo[2.2.2]octane pattern in the E ring of ursane derivatives
Eva Klinotová, Hana Skorkovská, Jiří Protiva, Jiří Urban and Alois Vystrčil
Department of Organic Chemistry, Charles University, 128 40 Prague 2
Abstract
Alkaline hydrolysis of ketolactones I and II is accompanied by quantitative acyloin rearrangement of the 20-hydroxy-21-oxo derivative III formed, under simultaneous migration of the methyl group from the position 20α to the position 21α.
