SEARCH Articles Figures Tables Phosphates cyclic Ribonucleoside Ribonucleoside 2 , 3 -cyclic phosphate activity Ribonucleoside 2 , 3 -cyclic phosphate diesterase Ribonucleoside cyclic 2 ,3 -phosphates preparation Ribonucleosides Ribonucleosides 2 :3 -cyclic phosphates