Avoid racemization! Short lipophilic oligopeptides utilizing nucleophilic N‐π‐methyl histidine residues catalyze the desymmetrization of meso‐1,2‐diols with enantiomeric ratios of up to 94:6. Direct one‐pot oxidation, which avoids the well‐known racemization of the monoacylated product, directly leads to α‐acetoxy ketones with enantiomeric ratios of up to 97:3 and 97 % yield.
避免消旋!利用亲核性N -π-甲基组
氨酸残基的短亲脂性寡肽催化对映体比率高达94:6的内消旋1,2
-二醇脱对称化。直接一锅氧化避免了单酰化产物的众所周知的外消旋化作用,直接导致对映体比率高达97:3且产率为97%的α-乙酰氧基酮。