(2R,3R,4S)-methyl 3-hydroxy-4-((2S,3S,6S)-6-((R)-1-hydroxypropan-2-yl)-3-methyltetrahydro-2H-pyran-2-yl)-2-methylpentanoate

(2R,3R,4S)-methyl 4-((2S,3S,6S)-6-((R)-1-(tert-butyldiphenylsilyloxy)propan-2-yl)-3-methyltetrahydro-2H-pyran-2-yl)-3-hydroxy-2-methylpentanoate

methyl (2R,3R,4S)-3-(benzyloxy)-4-((2S,3S,6S)-6-((R)-1-((tert-butyldiphenylsilyl)oxy)propan-2-yl)-3-methyltetrahydro-2H-pyran-2-yl)-2-methylpentanoate