The six-membered cyclo-hexene ring in the title compound, C(26)H(37)Cl(2)NOS(2), adopts an envelope-shaped conformation, with the C atom bearing the two methyl groups representing the flap. This atom deviates by 0.658 (7) Å from the plane passing through the other five atoms of the ring (r.m.s. deviation = 0.005 Å). The mol-ecular conformation is stabilized by an N-H⋯S hydrogen bond.

In the title compound, C(24)H(24)N(2)O(2), the five-membered ring of the indoline ring system adopts an envelope conformation with the spiro C atom at the flap. The dihedral angle between the benzene ring of the indoline ring system and the naphthalene ring system is 71.70 (7)°. In the crystal structure, pair of weak C-H⋯O hydrogen bonds link the mol-ecules into centrosymmetric dimers.

The five-membered ring in the title imidazolidinone derivative, C(11)H(12)N(2)O(2)S, adopts an envelope conformation with the S-bound C atom being the flap atom. Overall, the mol-ecule has a U-shaped conformation as both rings are folded towards each other [dihedral angle = 31.66 (6)°]. An eight-membered amide {⋯HNCO}(2) synthon leads to hydrogen-bonded dimeric aggregates in the crystal: these ...

Due to the complex three-dimensional structure of the nose, the repair of the nasal defect requires reconstruction of three different layers: skin envelope, osteocartilaginous framework and nasal lining. Before nasal reconstruction can be accomplished, the nose must rest on a stable platform to avoid late nasal obstructions, and septal deviations resulting from scar contraction. We present thre...

The asymmetric unit of the title compound, C12H10N2, which may serve as a model for mitosenes, contains two independent mol-ecules. The conformation of the five-membered rings in both molecules is envelope, with the central CH2-CH2-CH2 C atom at the flap in each case. In the crystal, they inter-act by a combination of weak C-H⋯N and π-π inter-actions [centroid-centroid distances = 3.616 (1) and...

The cyclo-hexene ring in the title compound, C(19)H(23)Cl(2)NOS(2), adopts an envelope conformation, with the C atom bearing the two methyl groups representing the flap. This atom deviates by 0.630 (2) Å from the plane passing through the other five atoms of the ring (r.m.s. deviation = 0.020 Å). The mol-ecular conformation is stabilized by an intra-molecular N-H⋯S hydrogen bond.

In the title compound, C30H25N3O5, the central five-membered heterocyclic ring adopts an envelope conformation, with the N atom as the flap. The dihedral angles between this central ring and the pendant indane ring system, the trione and benzene rings are 87.49 (5), 82.95 (10) and 72.42 (10)°, respectively. The dihedral angle between the rings of the biphenyl group is 45.99 (13)°. In the crysta...

In the title compound, C(26)H(16)N(4)O(3)S, the thia-diazole ring adopts an envelope conformation, with the S atom occupying the flap position. The dihedral angle between the two quinoline ring systems is 55.32 (8)°. In the crystal, the mol-ecules are linked into chains along [010] by C-H⋯O hydrogen bonds. The chains are connected via π-π inter-actions involving one of the pyridine rings [centr...

The asymmetric unit of the title compound, C(19)H(20)N(2)O(3), contains two independent mol-ecules in both of which the pyrrolidine ring adopts an envelope conformation, but with a C atom as the flap in one mol-ecule and the N atom in the other. The pyran ring adopts a half-chair conformation in both mol-ecules. In the crystal, mol-ecules are linked via C-H⋯O hydrogen bonds and C-H⋯π inter-acti...

The title compound, C28H24O5, consists of a fused tricyclic system containing two five-membered rings and one six-membered ring. The five-membered rings both exhibit an envelope conformation with the O atom at the flap, whereas the six-membered ring adopts a boat conformation. The dihedral angle between the 4-methyl-phenyl rings at the 1,8-positions is 76.4 (1)°. In the crystal, mol-ecules are ...