<1R,5R,6R,8S>-3-ethoxy-6,8-dimethyl-2-aza-9-oxabicyclo<3,3,1>non-2-ene

<1R,4S,5S,6R,8S>-3-ethoxy-4,6,8-trimethyl-2-aza-9-oxabicyclo<3,3,1>non-2-ene

1,3-Dithiane-2-butanol,a-[2-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-methylethyl]-b,d-dimethyl-,[aS-[aR*(S*),bS*,dR*]]-

2H-Pyran-2-ethanol, tetrahydro-6-methoxy-b,3,5-trimethyl-,[2S-[2a(R*),3a,5a,6a]]-

7-O-t-butyldimethylsilyl-2,3,4,6-tetradeoxy-5-O-(1-ethoxyethyl)-2,4,6-trimethyl-D-gluco(and manno)-heptose trimethylene dithioacetal