Abstract
An alpha-hydroxyaldehyde derived from naltrexone was converted to an oxazoline dimer with ammonium chloride and sodium acetate in MeOH under reflux. The resulting dimer was treated with dl-camphorsulfonic acid in CHCl(3) to give the trimer. The method for trimer synthesis was also applied to general alpha-hydroxyaldehydes to afford trimers in good yield.
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