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Host 1 with an electron-deficient nanometer-sized cavity were synthesized in two steps. Moreover, 1 has been successfully used as a gas chromatographic stationary phase to prepare a packed column for the separation of PhH/Cy and Tol/MCy.

C16H14N2O, monoclinic, P21/c (no. 14), a = 6.903(2) Å, b = 7.217(2) Å, c = 26.071(8) Å, β = 93.023(4)°, V = 1296.9(7) Å3, Z = 4, R gt (F) = 0.0474, wR ref (F 2) = 0.1423, T = 296(2) K.

A direct and efficient palladium-catalyzed reductive coupling reaction of nitroarenes with phenols has been developed. A series of N-cyclohexylaniline derivatives was easily and efficiently obtained in moderate to good yields via C–N bond formation by the simple use of safe and inexpensive sodium formate as the hydrogen donor.

C15H12N2, monoclinic, P21/c (no. 14), a = 7.323(4) Å, b = 6.975(3) Å, c = 22.411(11) Å, β = 93.195(5)°, V = 1143.0(10) Å3, Z = 4, R gt(F) = 0.0457, wR ref(F 2) = 0.1324, T = 296(2) K.

C21H17N3O3, orthorhombic, Pbca (no. 61), a = 14.3606(4) Å, b = 7.4250(2) Å, c = 34.2840(9) Å, V = 3655.62(17) Å3, Z = 8, R gt(F) = 0.0399, wR ref(F 2) = 0.1178, T = 571(2) K.

The interaction between peptides related to neurohypophyseal hormones and brain dopaminergic systems was studied by investigating in rats the effect of these peptides on behavioral changes induced by graded doses of the specific dopamine agonist apomorphine. Low doses of this drug induce hypoactivity of the animals, while higher doses result in hyperactivity and stereotyped sniffing. Desglycinamide9[Arg8]vasopressin (DG-AVP), prolyl-leucyl-glycinamide (PLG) and oxytocin did not interfere with the behavioral responses induced by the higher doses of apomorphine. Peptide treatment made the rats more sensitive to apomorphine with respect to the drug induced hypoactivity. PLG and especially DG-AVP were more effective than oxytocin. It is concluded that these peptides may have a selective action on distinct dopaminergic receptor systems in the brain, that are presumably located presynaptically in the nucleus accumbens area.