Abstract
An efficient synthesis of cyclic IDce:simple-para-carbocyclic-ribose, as a stable mimic for cyclic ADP-ribose, was achieved. N1-Carbocyclic-ribosylinosine derivative 15, prepared from N1-(2,4-dinitrophenyl)inosine derivative 10 and an optically active carbocyclic amine 11, was converted to 8-bromo-N1-carbocyclic-ribosylinosine bis-phosphate derivative 20. Treatment of 20 with I2 in the presence of molecular sieves in pyridine gave the desired cyclic product 8 quantitatively, which was deprotected and reductively debrominated to give the target cyclic IDP-carbocyclic ribose (3).
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