(3aS,4S,6S,7S,7aR)-6-azido-2,2,2',2'-tetramethyltetrahydro-5H-spiro[benzo[d][1,3]dioxole-4,4'-[1,3]dioxolan]-7-ol

<(1S,2S,4S,5S,6R)-5-benzyloxy-8,8,2',2'-tetramethylspiro<7,9-dioxabicyclo<4.3.0>nonane-2,4'-1',3'-dioxolan>-4-yl>-<(5''R,6''S,7''S,8''S,9''R,10''S)-8'',9'',10''-tribenzyloxy-6''-hydroxy-2'',2''-dimethyl-1'',3''-dioxaspiro<4.5>decan-7''-yl>amine

(1R,2S,4S,5S,6R)-4-amino-5-benzyloxy-8,8,2',2'-tetramethylspiro(7,9-dioxabicyclo<4.3.0>nonane-2,4'-1',3'-dioxolane)