(3R,4S)-4-((tert-butyldimethylsilyl)oxy)-3-(((tert-butyldimethylsilyl)oxy)methyl)-2-methylenecyclopentanone

2-氨基-6-氯嘌呤

(3S,5R)-hept-1-en-6-yne-3,5-diol

6-chloro-2-(di-Boc-amino)-9H-purine

(4aR,6R,7aS)-5-methylene-2-phenylhexahydrocyclopenta[d][1,3]dioxin-6-ol