title: (±)-Ethyl 6,7-dimeth-oxy-1-(1H-pyrrol-2-yl)-1,2,3,4-tetra-hydroisoquinoline-2-car-boxyl-ate.
abstract: In the title compound, C(18)H(22)N(2)O(4), the dihedral angle between the pyrrolyl and quinolinyl fragments is 68.97 (2)°. Two non-classical intra-molecular C-H⋯O hydrogen bonds stabilize the mol-ecular geometry. In the crystal structure, mol-ecules form infinite chains via moderate inter-molecular N-H⋯O(CH(3)) hydrogen bonds.
authors.forename: Rosica Petrova
authors.initials: RP
authors.lastname: Nikolova
authors.forename: Tsonko
authors.initials: T
authors.lastname: Kolev
authors.forename: Stela M
authors.initials: SM
authors.lastname: Statkova-Abeghe
authors.forename: Boris Lubomirov
authors.initials: BL
authors.lastname: Shivachev