Structures previously assigned to the two cis-diols from osmium tetroxide oxidation of methyl olean-2,12-dien-28-oate should be interchanged; 2α,3α-dihydroxyolean-12-en-28-oic acid occurs in Shorea acuminata resin.
H. T. Cheung and T. C. Yan, J. Chem. Soc. D, 1970, 369 DOI: 10.1039/C29700000369
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