A series of 17 long-chain arylpiperazines containing bulky, complex imide systems (5,8-dimethyl-3b,9-epoxy-(3a,4,5,6,7,8,9,9a)-octahydro-1Hbenzo[e]isoindole-1,3(2H)-dione or 4,9-diphenyl-4,9-epoxy-3a,4,9,9a-tetrahydro-1H-benzo[f]isoindole-1,3(2H)-dione) was synthesized and evaluated for their affinity for serotonin 5-HT , 5-HT and dopamine D receptors. Most of the new compounds showed moderate ...

Molecular packing motifs in solid states is the dominant factor affecting the n-channel organic field-effect transistors (OFETs). However, few systematic researches were performed in the different extensions of π-conjugated molecules with the uniform substitution effecting the molecular packing motifs. In this manuscript, OFET devices based on three latterally expanded rylene diimides end-funct...

Herein we describe the development and optimization of a two-step procedure for synthesis N-protected 1-aminomethylphosphonium salts from imides, amides, carbamates, or lactams. Our “step-by-step” methodology involves transformation amide-type substrates to corresponding hydroxymethyl derivatives, followed by substitution hydroxyl group with phosphonium moiety. The first step described was cond...

The Ugi four-component reaction (U-4CR) with N-hydroxyimides as a novel carboxylic acid isostere has been reported. This reaction provides straightforward access to α-hydrazino amides. A broad range of aldehydes, amines, isocyanides and N-hydroxyimides were employed to give products in moderate to high yields. This reaction displays N-N bond formation by cyclic imide migration in the Ugi reacti...

The synthesis of the unusual alkaloid concavine, isolated from Clitocybe concava (Basidiomycetae), has been accomplished. The synthetic route features regio- and stereoselective manipulation of polycyclic imide intermediates via enolate substitution and Grignard addition, along with a key bridge-forming step involving a new method for sulfenylative radical cyclisation. The NMR data for syntheti...

In the title complex, [Ag(2)(C(12)H(8)N(2)O(4))(C(10)H(8)N(2))(2)]·2H(2)O, the Ag(I) ion is three-coordinated by two N atoms from a chelating 2,2'-bipyridine ligand and one N atom from an imide ligand in a Y-shaped fashion. The imide ligand and the complex lie on a twofold rotation axis. The ligand bridges two Ag(I) ions, forming a dinuclear complex. In the crystal, O-H⋯O hydrogen bonds link th...

The characteristic indeno-tetrahydropyridine core of cytotoxic haouamine B (2) was efficiently synthesized featuring the diastereoselective construction of a diaryl-substituted stereogenic quaternary center by an intramolecular Pd-catalyzed α-C-arylation and subsequent direct conversion of the vinylogous imide function into the C2-C25 double bond by TsNHNH(2).

Conformational energies, consisting of nonbonded and electrostatic interactions, have been calculated for poly(L-proline) I and II helices, of six-residues length, with a water molecule hydrogen-bonded to each imide group. For polyproline I, the Traub-Shmueli prolyl-ring geometry was used, whereas for polyproline II, calculations were done for the 2 ring geometries of Leung and Marsh and, in so...