U.S. National Institutes of Health
Novel method improves bremazocine enantiomer synthesis
Published in Telemedicine Business Week, March 10th, 2004
"In order to provide ready access to multigram quantities of the optically pure bremazocines [(-)- and (+)-9,9-dimethyl-5-ethyl-2-hydroxy-2-(1-hydroxy-cyclopropylmethyl)-6,7-benzomorphan)]," researchers in the United States "developed an improved non-chromatographic synthesis, and determined the optical purity of their N-nor precursors using a rapid and relatively simple 1H NMR method based on diastereomeric derivatization with optically pure 1-phenylethylisocyanate."
"This method of determining optical purity should be readily amenable to similar systems...
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