Abstract
Ketals were synthesized by reacting methylbetulonate and ethylenediol.
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Nigmatullina, L.R., Flekhter, O.B., Baltina, L.A. et al. Synthesis of Ketals of Methyl 3-Oxo-lup-20(29)-en-28-oate. Chemistry of Natural Compounds 38, 583–585 (2002). https://doi.org/10.1023/A:1022699023796
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DOI: https://doi.org/10.1023/A:1022699023796