Grandifotane A (1), a limonoid with an unprecedented carbon skeleton, was isolated from the stem bark of Khaya grandifoliola. The structure of 1 with the absolute configuration was determined by spectroscopic data, X-ray crystallography, and ECD calculation. A biogenetic route for grandifotane A (1) involving an enzymatic Baeyer-Villiger oxidation as the key step is proposed.
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Yuan et al. (2009) studied this question.
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