(2S,3aR,5R,6S,7R,7aS)-6,7-di-O-benzyl-N'-methyl-octahydro-5-(phenylmethyloxymethyl)-pyrano[3,2-b]pyrrole-2-carboxamide

(2S,3aR,5R,6R,7S,7aS)-6,7-di-O-benzyl-2-(hydroxymethyl)-5-[(benzyloxy)methyl]octahydropyrano[3,2-b]pyrrole

(2S,3aR,5R,6R,7S,7aS)-1-(tert-butyloxycarbonyl)-6,7-di-O-benzyl-2-(hydroxymethyl)-5-[(benzyloxy)methyl]octahydropyrano[3,2-b]pyrrole