Abstract
Abstract 13C-{1H} nuclear Overhauser effects (n.O.e.) were measured for penicillin G in I 2H6 I-DMSO upon selective presaturation of proton resonances and interpreted on the basis of effective correlation times as calculated by analysis of 13C and 1H spin-lattice relaxation rates. Preferential occurrence of a compact C2 puckered conformation with folding of the benzoylamino side chain towards the methyl at C2 was given evidence. A Dreiding model of such conformation was built.
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