Patent ID: 6153745
Filing Date: 2000-11-28
Classification: C07H,C12N

Abstract:
A compound having the structure: ##STR4## where X.sup.1 is selected from the group consisting of O, S, N-alkyl, N.sup.+ -dialkyl and N-benzyl; X.sup.2 is selected from the group consisting of triphosphate (P.sub.3 O.sub.9).sup.4-, diphosphate (P.sub.2 O.sub.6).sup.3- and thiotriphosphate (P.sub.3 O.sub.8 S).sup.4- ; and X.sup.3 is selected from the group consisting of H, NH.sub.2, F and OR, where R is H, methyl, allyl or alkaryl.