Ethyl 4-hydroxy-2,6-diphenyl-1-(2-thiomorpholinoacetyl)-1,2,5,6-tetrahydropyridine-3-carboxylate

Ethyl 1-[2-(1H-benzotriazol-1-yl)acetyl]-4-hydroxy-2,6-diphenyl-1,2,5,6-tetrahydropyridine-3-carboxylate

In the title compound, C₂₈H₂₆N₄O₄, the tetra­hydro­pyridine ring adopts a boat conformation. The two phenyl rings form dihedral angles of 88.64 (8) and 59.28 (10)° with the best plane through the tetra­hydro­pyridine ring. The dihedral angle between the two phenyl rings is 82.55 (10)°. The benzotriazole ring system is essentially planar, with a maximum deviation of 0.009 (1) Å from the least-squares plane. The mol­ecular conformation is stabilized by an intra­molecular O—H⋯O hydrogen bond, generating an S(6) motif.

Ethyl 1-[2-(1,3-benzoxazol-2-ylsulfan-yl)acet-yl]-4-hy-droxy-2,6-diphenyl-1,2,5,6-tetra-hydro-pyridine-3-carboxyl-ate

In the title compound, C(29)H(26)N(2)O(5)S, the piperidine ring adopts a half-chair conformation. The phenyl rings are oriented at dihedral angles of 75.76 (12) and 86.64 (9)° with respect to the best plane through the piperidine ring. The dihedral angle between the two phenyl rings is 30.81 (13)°. The benzoxazole ring system is approximately planar [maximum deviation = 0.016 (4) Å]. The atoms of the ethyl side chain are disordered over two sets of sites [site occupancies = 0.376 (9) and 0.624 (9)]. The mol-ecular conformation is stabilized by an intra-molecular O-H⋯O hydrogen bond, generating an S(6) motif. The crystal packing is stabilized by inter-molecular C-H⋯O inter-actions, generating a chain running along the a axis.

Ethyl 1-benzoyl-4-hy-droxy-2,6-diphenyl-1,2,5,6-tetra-hydro-pyridine-3-carboxyl-ate

In the title compound, C(27)H(25)NO(4), the tetra-hydro-pyridine ring adopts a half-chair conformation. The three phenyl rings form dihedral angles of 66.33 (7), 87.36 (8) and 36.90 (7)° with the least-squares plane through the tetra-hydro-pyridine ring. The mol-ecular conformation is stabilized by an intra-molecular O-H⋯O hydrogen bond, generating an S(6) motif.