(3R*,4S*)-3-hydroxy-4-methyl-5-(benzyloxy)pentanoic acid

Methanesulfonic acid (1S,2R)-3-benzyloxy-1-(methoxycarbamoyl-methyl)-2-methyl-propyl ester

(R,E)-ethyl 5-(tert-butyldimethylsilyl)oxy-4-methyl-2-pentenoate