(3S,4R,3'R,4'S)-3-(3'-hydroxy-4'-methylhexanoyl)-3-methoxymethyloxy-4-methyl-4-vinyl-γ-butyrolactone

(3S,4S)-4-(2-benzyloxyethyl)-3-hydroxy-4-methyl-γ-butyrolactone

(2R,3S)-2-(2-Benzyloxy-ethyl)-3-hydroxy-2-methyl-succinic acid diethyl ester

(2S,3R)-5-benzyloxy-3-ethoxycarbonyl-2-hydroxy-3-methylpentanoic acid

(2S,3S)-2-(acetyloxy)-3-methylpentanoic acid