(19R)‐5,19‐Bis(acet­yloxy)‐10,13‐dide­oxy‐10‐oxo‐5β‐enmein

The title compound, C24H28O9, was prepared from macrocalyxin A and is built up from five fused rings, viz. three six-membered rings and two five-membered rings. Two unique mol­ecules are present in the asymmetric unit; both independent mol­ecules have the same absolute configuration, which was deduced from the chirality of the starting material.