By means of several proton and C-13 relaxation experimental techniques, selected internuclear distances and the rotational correlation time for 1-(aminomethyl)-5,6-dihydroxyisochroman hydrobromide were determined. The molecule dissolved in DMSO-d(6) does not show relevant internal motions and is found to tumble isotropically. Two different procedures for determining the cross-relaxation rates, one using mono- and biselective relaxation rates and the other following the build-up of the transient NOE, are compared, The two methods are formally equivalent, but have different advantages and drawbacks while yielding essentially the same structural picture.
Stereochemistry and dynamics of the hydrobromide of 1-(aminomethyl)-5,6-dihydroxyisochroman, semirigid analogue of catecholamines
DI BARI, LORENZO;UCCELLO BARRETTA, GLORIA;MANERA, CLEMENTINA
1996-01-01
Abstract
By means of several proton and C-13 relaxation experimental techniques, selected internuclear distances and the rotational correlation time for 1-(aminomethyl)-5,6-dihydroxyisochroman hydrobromide were determined. The molecule dissolved in DMSO-d(6) does not show relevant internal motions and is found to tumble isotropically. Two different procedures for determining the cross-relaxation rates, one using mono- and biselective relaxation rates and the other following the build-up of the transient NOE, are compared, The two methods are formally equivalent, but have different advantages and drawbacks while yielding essentially the same structural picture.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
