h R7 independently is hydrogen or an acyl group, for example an acetyl group, each n is independently an integer from about 1 to about 20, and [0230] wherein R1 can include the groups: [0231] and wherein R2 can include the groups: [0232] In another embodiment, a compound having Formula 117 is used to generate a compound having Formula 105 via phosphoramidite mediated coupling with a biologically a