Table 1.

The ¹H NMR Spectroscopic Data Obtained with the P8–dG and P9–dG Cross-Linking Products (diastereomers of N7G-N1dG-BD; Scheme 2) in DMSO-d₆

P8–dG cross- linking product	P9–dG cross- linking product	assignments
10.74 (br s, 1H)	10.69 (s, 1H)	H-1‴
7.95 (s, 1H)	7.94 (s, 1H)	H-8
7.82 (s, 1H)	7.81 (s, 1H)	H-8‴
6.77 (s, 2H)	6.74 (s, 2H)	2-NH2
6.13 (t, 1H)	6.13 (dd, 1H)	H-1′
6.08 (s, 2H)	6.04 (s, 2H)	2‴-NH2
5.48 (d, 1H)	5.45 (d, 1H)	2″-OH or 3″-OH
5.27 (d, 2H)	5.22 (d, 2H)	3′-OH and 2″-OH or 3″-OH
4.94 (t, 1H)	4.90 (t, 1H)	5′-OH
4.34 (m, 1H)	4.34 (m, 1H)	H-3′
4.33 (m, 1H)	4.33 (m, 1H)	H-4″
4.18 (dd, 1H)	4.19 (dd, 1H)	H-4″
4.06 (m, 1H)	4.09 (m, 1H)	H-1″
3.97 (m, 1H)	3.96 (m, 1H)	H-1″
3.81 (m, 2H)	3.82 (m, 2H)	H-4′ and H-2″ or H-3″
3.72 (m, 1H)	3.73 (m, 1H)	H-2″ or H-3″
3.55 (m, 1H)	3.55 (m, 1H)	H-5′
3.49 (m, 1H)	3.50 (m, 1H)	H-5′
2.5 (m, 1H)a	2.51 (m, 1H)a	H-2′
2.19 (m, 1H)	2.20 (m, 1H)	H-2′

^aThese values of the chemical shifts are approximate because the solvent peak (DMSO) appeared at 2.50 ppm.