endo,endo-Tetra­cyclo­[6.2.1.1^3,6.0^2,7]dodeca-9-en-anti-11-yl 4-bromo­benzoate

The title compound 1-OPBB, C₁₉H₁₉BrO₂, contains a dechlorinated and hydrogenated isodrin backbone with an anti-4-bromo­benzoate substituent at one of the methano bridges. The dihedral angle between the CO₂ ester plane and the benzene ring plane is 8.5 (2)°. In the crystal, the ester groups stack over benzene rings: the mol­ecules pack as conformational enanti­omers, with nearest parallel benzene ring planes separated by a perpendicular distance of 3.339 (1) Å. The nearest benzene-ring centroids are 5.266 (1) Å apart. Possible structural correlation with enhanced solvolytic reactivity is investigated.

(6S*)-6-[(1S*,2R*)-1,2-Di­hydroxy­pent­yl]-4-meth­oxy-5,6-di­hydro-2H-pyran-2-one

The title compound, C₁₁H₁₈O₅, was isolated from a liquid culture of Pestalotiopsis sp. In the mol­ecule, the pyran-2-one ring assumes a half-chair conformation. The two terminal C atoms of the pentyl group were refined as disordered over two sets of sites, with refined occupancies of 0.881 (10) and 0.119 (10). In the crystal, mol­ecules are linked via O—H...O hydrogen bonds forming a three-dimensional network.