((2R,3R,4R,5R,6S)-4,5-Bis-benzyloxy-6-methoxy-2-vinyl-tetrahydro-pyran-3-yloxy)-dimethyl-((2R,3S)-2-vinyl-tetrahydro-pyran-3-yloxy)-silane

(2S,3R,4S,5R,6R)-3,4-Bis-benzyloxy-5-but-3-enyloxy-2-methoxy-6-vinyl-tetrahydro-pyran

((2R,3R,4R,5R,6S)-4,5-Bis-benzyloxy-6-methoxy-2-vinyl-tetrahydro-pyran-3-yloxy)-dimethyl-pent-4-enyloxy-silane

(2S,3R,4S,5R,6R)-3,4-Bis-benzyloxy-2-methoxy-5-pent-4-enyloxy-6-vinyl-tetrahydro-pyran

((2R,3S,4S,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-2-vinyl-tetrahydro-pyran-3-yloxy)-((2R,3R,4R,5R,6S)-4,5-bis-benzyloxy-6-methoxy-2-vinyl-tetrahydro-pyran-3-yloxy)-dimethyl-silane