Terpenoids. LVII.<sup>1</sup> Mass Spectral and Nuclear Magnetic Resonance Studies of Pentacyclic Triterpene Hydrocarbons<sup>2</sup>
作者:Jerry Karliner、Carl Djerassi
DOI:10.1021/jo01344a063
日期:1966.6
The synthesis of β-amyrin
作者:D. H. R. Barton、E. F. Lier、J. F. McGhie
DOI:10.1039/j39680001031
日期:——
olean-12-en-1-one. Several methods have been developed to change the 1-oxo into a 3-oxo-function and vice versa. Since olean-12-en-3-one has already been reduced to β-amyrin and olean-13(18)-ene has been synthesised, our work constitutes a synthesis of β-amyrin.