Methyl 1-benzoyl-3-hydroxy-4-methoxy-1,2,3,4-tetra­hydro­quinoline-2-carboxyl­ate

The title compound, C₁₉H₁₉NO₅, is the result of a regioselective nucleophilic epoxide ring-opening performed with methanol on a 1,2,3,4-tetra­hydro­quinoline 3,4-epoxide bearing a related trans ester functionality. The relative stereochemistry of the resulting diol has shown that the the three adjacent substituents are mutually trans disposed. In the crystal structure, centrosymmetric hydrogen-bonded dimers are observed.