273
Nucleotides and Nucleosides. 15 N Chemical Shifts (δ in ppm relative
to CH 3 NO 2 , solvent: DMSO)
N
H
N
NH 2
O
N
H
NH
O
O
N
H
NH
O
O
H 3 C
N
N
N
H
N
NH 2
NH
N
N
H
N
O
NH 2
N
N
NH 2
O
O
HO
OH OH
N
NH
O
O
O
HO
OH OH
N
NH
O
O
O
HO
OH OH
H 3 C
N
N
N
N
NH 2
O
HO
OH OH
NH
N
N
N
O
O
HO
OH OH
NH 2
-288.9
-302
-300.0
-146
-145.8
-240.2
-234.2
-151
-158.9
-215.7
-305.2
-308.2
-211
-211.8
-211.5
-155
-140.9
-155.2
-134.8
-287.2
-170.3
-247.8
-248.2
-237.8
-237.5
-223.7
-225.2
-172.3
-240.5
-220.2
-228.2
-228.4
6.1 15 N NMR Spectroscopy