Abstract
Starting with allobetulin triterpenoid A-nor-derivatives with a cis-junction of A/B rings were prepared for the first time.
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Medvedeva, N.I., Flekhter, O.B., Tretyakova, E.V. et al. Synthetic Transformations of Higher Terpenoids: XI. Synthesis of A-Nor-5bH-19b,28-epoxy-18a-olean-3-one Derivatives. Russian Journal of Organic Chemistry 40, 1092–1097 (2004). https://doi.org/10.1023/B:RUJO.0000045887.67489.44
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DOI: https://doi.org/10.1023/B:RUJO.0000045887.67489.44