(3aS,5R,6R,7R,7aS)-3-tert-butyl 5-ethyl 6-hydroxy-2-oxo-7-(pentan-3-yloxy)hexahydrobenzo[d]oxazole-3,5(2H)-dicarboxylate

(3aS,4S,6S,6aS)-6-(benzyloxy)-2,2-diethyltetrahydrofuro[3,4-d][1,3]dioxole-4-carbaldehyde

D-甘露糖

2,3:5,6-di-O-isopentylidene-α-D-mannofuranose

(3aS,4S,6R,6aS)-4-(benzyloxy)-6-((R)-2,2-diethyl-1,3-dioxolan-4-yl)-2,2-diethyltetrahydrofuro[3,4-d][1,3]dioxole