5-Bromo­spiro­12-dioxane-44′-tricyclo­4.3.1.138undeca­ne-3′-ol

摘要

The title compound, C14H21BrO3, comprises a seven- (C7) and three six-membered (1 × O2C4 and 2 × C6) rings, and each adopts a conformation based on a chair. Stability to the mol­ecular structure is afforded by an intra­molecular O—H⋯Br hydrogen bond. In the crystal structure, mol­ecules are arranged into a helical supra­molecular chain along the b axis, linked by C—H⋯O inter­actions, where the O-atom acceptor is one of the dioxane O atoms. The crystal studied was found to be a racemic twin. The major component was present 94% of the time.