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. Author manuscript; available in PMC: 2010 Sep 15.
Published in final edited form as: Biochem Pharmacol. 2009 May 23;78(6):633–641. doi: 10.1016/j.bcp.2009.05.017

Figure 1.

Figure 1

The structure of (A) cytidine (Cyd), and its analogs (B) 2-(1H)-pyrimidinone ribonucleoside (zebularine), (C) 5-azacytidine (ZCyd), and (D) 5-aza-2'-deoxycytidine (ZdCyd). R=ribose and dR=2'-deoxyribose.