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The relative and absolute stereochemistry of five compounds, ((1R,2S,4R,5S)-exo-2-acetoxy-3,3-dimethylbicyclo[3.1.0]hexan-exo-4-yl) camphanoate, C20H28O6 (I), ((1R,2S,4R,5S,6R)-exo-2-acetoxy-3,3,exo-6-trimethylbicyclo[3.1.0] hexan-exo-4-yl) camphanoate, C21H30O6 (II), ((1R,2S,4R,5S,6S)-exo-2-acetoxy-3,3,endo-6-trimethylbicyclo[3.1.0] hexan-exo-4-yl) camphanoate, C21H30O6 (III), ((1S,2S,4R,5R,6S)-exo-2-acetoxy-endo-6-(3-butenyl)-3,3,exo-6- trimethylbicyclo[3.1.0]hexan-exo-4-yl) camphanoate, C25H36O6 (IV), and ((1S,2S,4R,5R,6S)-endo-2-acetoxy-3,3,exo-6-trimethylbicyclo[3.1.0]hexan-endo-4-yl) camphanoate, C21H30O6 (V), (camphanoate is 4,7,7-trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carboxylate) have been determined and the conformation of the five-membered ring of each one is discussed. These compounds were synthesized by an enantioselective esterase-catalyzed hydrolysis followed by acylation with camphanoyl chloride.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks global, III, V, I, II, IV

fcf

Structure factor file (CIF format)
Contains datablock III

hkl

Structure factor file (CIF format)
Contains datablock V

hkl

Structure factor file (CIF format)
Contains datablock I

hkl

Structure factor file (CIF format)
Contains datablock II

hkl

Structure factor file (CIF format)
Contains datablock IV

CCDC references: 129752; 129753; 129754; 129755; 129756

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