(2S,2'R)-2-<<3'<(tert-butoxycarbonyl)amino>-2'-methylpropanoyl>oxy>-4-methylpentanoic acid

(R)-(-)-N-methyl-N-methoxy(2-tert-butyldimethylsilyloxy-2-phenyl)acetamide

(R)-(-)-N-methyl-N-methoxy(2-hydroxy-2-phenyl)acetamide

(R)-(+)-(1-tert-butyldimethylsilyloxy-1-phenyl)butan-2-one