Collect. Czech. Chem. Commun.
1990, 55, 766-781
https://doi.org/10.1135/cccc19900766
Conformation of ring A in triterpenoid and 4,4-dimethylsteroid 3-ketones. Chemical shifts of methyl protons and lanthanide and benzene induced shifts
Jiří Klinota, Miloš Buděšínskýb and Jarmil Světlýa
a Department of Organic Chemistry, Charles University, 128 40 Prague 2
b Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
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