1.1.8 Each pyrimidine is covalently linked (through a N-glycosidic bond) to the 1 carbon of the deoxyribose at N-l of the pyrimidine, and each purine is covalently linked to the l carbon of the deoxyribose at n-9 of the purine. 1.1.9 The configuration of this n-glycosidic bond is b, where the base lies on the same side of the furanose ring as the 5 carbon.1.1.8 Each pyrimidine is covalently linked (through a N-glycosidic bond) to the 1’ carbon of the deoxyribose at N-1 of the pyrimidine, and each purine is covalently linked to the 1’ carbon of the deoxyribose at N-9 of the purine. 1.1.9 The configuration of this N-glycosidic bond is b, where the base lies on the same side of the furanose ring as the 5’ carbon