(4S,5S,6S)-6-ethyl-5-methyl-4-(2-(1-phenyl-1H-tetrazol-5-ylthio)ethyl)-4-(trimethylsilyloxy)-tetrahydropyran-2-one

(4S,5S)-5-{[tert-butyl(dimethyl)silyl]oxy}-4-methylhept-1-en-3-one

(4S,5S)-1-(benzyloxy)-5-{[tert-butyl(dimethyl)silyl]oxy}-4-methylheptan-3-one

(4S,5S)-1-(benzyloxy)-5-hydroxy-4-methylheptan-3-one

(4R,5S,6S)-4-(2-(benzyloxy)ethyl)-6-ethyl-4-hydroxy-5-methyl-tetrahydropyran-2-one