Grabias T, Piślewski N, Pośpieszyński P. 1H NMR studies of molecular dynamics in polycrystalline catecholamines.
SOLID STATE NUCLEAR MAGNETIC RESONANCE 1996;
6:135-139. [PMID:
8784952 DOI:
10.1016/0926-2040(95)01222-2]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The proton dynamics in phenylephrine hydrochloride, isoprenaline hydrochloride and norephedrine hydrochloride have been monitored by measuring the temperature dependence of the 1H spin-lattice relaxation times. The results are interpreted as due to C3-hindered reorientation of the NH3 and CH3 groups. The activation parameters have been determined.
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