Identify the base and monosaccharide used to form the following nucleoside, and then name it.
Analysis
• The sugar portion of a nucleoside contains the five-membered ring. If there is an OH group at C2′, the sugar is ribose, and if there is no OH group at C2′, the sugar is deoxyribose.
• The base is bonded to the fi ve-membered ring. A pyrimidine base has one ring, and is derived from either cytosine, uracil, or thymine. A purine base has two rings, and is derived from either adenine or guanine.
• Nucleosides derived from pyrimidines end in the suffix -idine. Nucleosides derived from purines end in the suffix -osine.
