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. 2019 Apr 25;19(5):669–674. doi: 10.1089/ast.2018.1935

FIG. 3.

FIG. 3.

The coupling of ribose 1,2-cyclic phosphate 3 and uracil and guanine provides uridine 2′-phosphate 6 and guanosine 2′-phosphate 7. (A) HPLC trace of coupling of ribose 1,2-cyclic phosphate 3 and uracil and its expanded view to show the formation of uridine 2′-phosphate 6. (B) HPLC trace of coupling of ribose 1,2-cyclic phosphate 3 and guanine and its expanded view to show the formation of guanosine 2′-phosphate 7 (N9-ribofuranosylguanine 2′-phosphate) and N7-ribofuranosylguanine 2′-phosphate.