(1S,5S,6R) absolute stereochemistry of (–)-cis,trans-spiro[4·4]nonane-1,6-diyl bis(p-dimethylaminobenzoate) as determined by the exciton chirality method

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Abstract
The exciton chirality method has been applied to the title compound (5) to establish the (1S5S,6R) absolute stereochemistry, which corroborates the (5S) configuration of (–)-spiro[4·4]nonane-1,6-dione (1).