Calodendrolide, a Degraded Limonoid from Calodendrum capense

Calodendrolide, C₁₅H₁₆O₄, has its epoxide β oriented and its 3′-furyl group α oriented. There are three independent molecules in the asymmetric unit, differing principally in the conformation of the 3′-furyl group with respect to the remainder of the molecule. One has its 3′-furyl O atom α oriented, with O—C—C=C torsion angle 30.7 (4)°, while the other two have their 3′-furyl O atoms β oriented, with O—C—C=C torsion angles −136.9 (3) and −134.5 (3)°. The epoxide is asymmetric, with mean C—O distances 1.436 (2) and 1.464 (2) Å.

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