B = Base (A, C, G, etc)
P = Me, Ac, Bz, dmf, iBu, PhAc, Pac, Tac, etc.
X/Y = H, OH, F, OTBDMS, OMe, OMOE, O-Propargyl, NH2, etc.
B = Base (A, C, G, U, I, T, etc)
P = Null, Me, halogen, Ac, Bz, dmf, iBu, PhAc, Pac, Tac, etc.
X/Y = H, OH, F, OTBDMS, OMe, OMOE,
O-Propargyl, NH2, etc.
B = Base (A, C, G, U, T, pU, T, iso-C, etc)
P = Null, Ac, Bz, dmf, iBu, PhAc, Pac, Tac, isotope, etc.
X = OH, OMe, F, OMOE, etc
B = Base (A, C, G, T, U)
P = Ac, Bz, dmf, iBu, PhAc, Pac, Tac, etc.
B = Base (A, C, G, U, T, etc)
P = Null, Ac, Bz, dmf, iBu, PhAc, Pac, Tac, etc.
X = OH, ODMT.