(2R,4S,5R,6S)-(-)-1-benzyloxy-5-hydroxy-2,4,6-trimethyloctan-3-one

(2R,4S,5R,6S)-1-Benzyloxy-5-(tert-butyl-dimethyl-silanyloxy)-2,4,6-trimethyl-octan-3-one

(R)-6-chloromethyl-5,6-dihydropyran-2-one

(2R,3S,4R,5R,6S)-5-tert-butyldimethylsilyloxy-2,4,6-trimethyloctan-1,3-diol

(2R,4S,5R,6S)-(-)-5-tert-butyldimethylsilyloxy-1-hydroxy-2,4,6-trimethyloctan-3-one