(1R,2R,3R,4R)-1-amino-2-(methoxymethyloxy)-3-methoxy-4-hydroxymethylcyclopentane

5-[(methoxymethylene)amino]-1-[5-O-(tert-butyldimethylsilyl)-2,3-O-(isopropylidene)-β-D-ribofuranosyl]imidazole-4-nitrile

(1R,2R,3R,4R)-1-tert-butoxycarbonylamino-2-(methoxymethyloxy)-3-hydroxy-4-hydroxymethylcyclopentane

(1R,2R,3R,4R)-1-tert-butoxycarbonylamino-2-(methoxymethyloxy)-3-methoxy-4-hydroxymethylcyclopentane

(-)-(1R,2R,3S,4R)-4-(N-tert-butyloxycarbonyl)amino-2,3-dimethylmethylenedioxy-1-(hydroxymethyl)cyclopentane