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The intermolecular Diels-Alder reaction between anthracene and maleimide compounds, catalyzed by the DAB22 deoxyribozyme.[27] The sense of enantioselectivity is not known, although there is an appreciable degree of enantioselectivity (M. Chandra and S.K.S., unpublished data), as is the case for Jäschke's Diels-Alder ribozyme.[25,57]
