p. 1931 - 1933
(2007/10/03)p. 2461 - 2480
(2007/10/03)(S)-3-Methyl-2-trifluoromethanesulfonyloxy-butyric acid methyl ester
(R)-1-(methoxycarbonyl)-2-methylpropyl trifluoromethanesulfonate
(R)-methyl 2-hydroxy-3-methylbutanoate
methyl (S)-2-hydroxy-3-methylbutanoate
3-(methoxycarbonyl)-4-methylpent-3-enoic acid