Methyl 11-hy­droxy-9-[1-(4-meth­oxy­phen­yl)-4-oxo-3-phenyl­azetidin-2-yl]-18-oxo-10-oxa-2-aza­penta­cyclo­[9.7.0.0^1,8.0^2,6.0^12,17]octa­deca-12(17),13,15-triene-8-carboxyl­ate

In the title compound, C₃₄H₃₂N₂O₇, the furan ring adopts a twist conformation and both the pyrrolidine rings adopt envelope conformations with O and C as flap atoms. The β-lactam ring makes a dihedral angles of 80.20 (10)° with the furan ring, of 75.55 (10)° with the pyrrolidine ring, of 12.26 (10)° with the meth­oxy­phenyl ring and of 73.77 (13)° with the phenyl ring. The O atom attached to the β-lactam ring deviates by 0.0385 (13) Å from the ring plane. The mol­ecular conformation is stabilized by intra­molecular O—H...N and C—H...O hydrogen bonds. The packing of the crystal is stabilized by inter­molecular C—H...O hydrogen bonds, which form a chain running along the b axis.

6-Ferrocenoyl-7-phenyl­spiro­[hexa­hydro­pyrrolo­[1,2-c][1,3]thia­zole-5,11′-indeno­[1,2-b]quinoxaline]

In the title compound, [Fe(C₅H₅)(C₃₂H₂₄N₃OS)], both the thia­zolidine ring and the pyrrolidine ring adopt an envelope conformation, with the S atom and the phenyl-bearing C atom, respectively, as the flaps. The thia­zolidine ring mean plane makes a dihedral angle of 59.08 (11)° with the pyrrolidine ring mean plane, which in turn makes a dihedral angle of 83.40 (10)° with the cyclo­pentane ring, indicating that the latter two rings are almost orthogonal to one another. In the crystal, a pair of C—H...O hydrogen bonds link the mol­ecules forming inversion dimers. The dimers are linked via π–π inter­actions [centroid–centroid distance = 3.7764 (10) Å] involving the quinoxaline moieties forming chains propagating along [1-10].

6-Ferrocenoyl-7-(4-fluoro­phen­yl)spiro­[hexa­hydro­pyrrolo­[1,2-c][1,3]thia­zole-5,11′-indeno­[1,2-b]quinoxaline]

In the title compound, [Fe(C₅H₅)(C₃₂H₂₃FN₃OS)], both the thia­zolidine ring and the pyrrolidine ring adopt a twist conformation on the N—C(H) bridging bond. Their mean planes are inclined to one another by 10.05 (10)°, and they make dihedral angles of 82.09 (10) and 89.67 (11)°, respectively, with the cyclo­pentane ring. The F atom deviates by −0.0238 (2) Å from the benzene ring to which it is attached. In the crystal, mol­ecules are linked by a pair of C—H...O hydrogen bonds, forming inversion dimers.

2-(4-Bromo­benzo­yl)-1-ferrocenyl­spiro­[11H-pyrrolidizine-3,11′-indeno­[1,2-b]quinoxaline]

In the title compound, [Fe(C₅H₅)(C₃₃H₂₅BrN₃O)], the fused four-ring system, 11H-indeno­[1,2-b]quinoxaline is essentially planar, with a maximum deviation of 0.087 (3) Å from the least-squares plane of the attached benzene ring. The pyrrolidine rings adopt envelope conformation and make a dihedral angle of 51.76 (19)° with each other. The cyclopentadiene rings of the ferrocenyl moiety have an eclipsed conformation. The Br atom deviates by 0.0190 (9) Å from the attached benzene ring. The mol­ecular structure features an intra­molecular C—H...N inter­action, which generates an S(8) ring motif. The crystal packing features C—H...O inter­actions, which generate R₂²(18) centrosymmetric dimers, as well as C—H...π inter­actions.