Conversion of 2-isoxazolines into aziridines by lithium aluminum hydride reduction

1-[2-(4-Nitro-phen-yl)-5-(5-phenyl-1,2-oxazol-3-yl)-1,2,3,4-tetra-hydro-quinolin-4-yl]pyrrolidin-2-one monohydrate

The title compound, C₂₈H₂₄N₄O₄·H₂O, crystallizes with two organic mol­ecules and two solvent water mol­ecules in the asymmetric unit. The most obvious difference between the mol­ecules is the torsion angles between the isoxazole ring and the benzene and phenyl rings [47.0 (2)/56.4 (2) and 33.3 (2)/11.0 (2)°, respectively]. Another important difference is observed in the rotation of the nitro group with respect to the phenyl groups [3.5 (6) and 31.1 (6)°]. The pyrrolidinone fragment is cis oriented with respect to the 4-nitro­phenyl fragment. In the crystal, mol­ecules are linked into centrosymmetric R₄²(8) and R₄⁴(20) motifs by O—H⋯O and N—H⋯O inter­actions.

Matrix compare analysis discriminates subtle structural differences in a family of novel antiproliferative agents, diaryl-3-hydroxy-2,3,3a,10a-tetrahydrobenzo[b]cycylopenta[e]azepine-4,10(1H,5H)-diones

A diastereoselective synthesis of diaryl-3-hydroxy-2,3,3a,10a-tetrahydrobenzo[b]cycylopenta[e]azepine-4,10(1H,5H)-diones is described employing a tandem Michael-aldol addition as key step. The novel compounds exhibit antiproliferative activity in a panel of in vitro cultivated cancer cell lines. The bioinformatic tool COMPARE was able to discriminate between two closely related subgroups of the title compounds, namely 1,3- and 2,3-disubstituted derivatives.