Acetic acid (2R,3R,4R,4aS,7S,8S,8aS)-3,7,8-triacetoxy-2-acetoxymethyl-5-acetyl-octahydro-pyrano[3,2-b]pyridin-4-yl ester

Acetic acid (2R,3R,4R,4aS,7R,8S,9aS)-3,7,8-triacetoxy-2-acetoxymethyl-5-acetyl-decahydro-1-oxa-5-aza-benzocyclohepten-4-yl ester

(2R,3R,4R,4aS,7R,8R,8aR)-3,4,7,8-Tetraacetoxy-2-acetoxymethyl-octahydro-pyrano[3,2-b]pyridine-5-carboxylic acid tert-butyl ester

((2R,3R,4R,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-2-vinyl-tetrahydro-pyran-3-yl)-carbamic acid tert-butyl ester

((2R,3S,4R,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-2-vinyl-tetrahydro-pyran-3-yl)-carbamic acid tert-butyl ester