Collect. Czech. Chem. Commun. 1969, 34, 240-246
https://doi.org/10.1135/cccc19690240

Triterpenes. XV. A 2nd order Beckmann rearrangement of 20β,28-epoxytaraxastane 21- and 22-oximino derivatives

E. Říhová and A. Vystrčil

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