(1β2α3α7α11α13β)-13711-Tetra­acet­oxy-213-bis­(benz­yloxy)-21-methyl-1921-secohetisan-19-al hemi­hydrate

摘要

In the crystal structure of the title compound, C43H46NO13·0.5H2O, the mol­ecule assumes a U-shaped conformation, the terminal benzene rings being approximately parallel and partially overlapped with each other. The mol­ecule contains eight alicyclic and heterocyclic rings. The cyclo­hexane rings adopt chair conformations, the other three six-membered carbocyclic rings form a bicyclo­[2.2.2]octane system with a boat conformation for each six-membered ring, the six-membered heterocyclic ring has a chair conformation and both of the five-membered rings have envelope conformations. The solvent water mol­ecule links with the organic mol­ecule via classic O—H⋯O and weak C—H⋯O hydrogen bonding in the crystal structure.