Table 2. ³J_H,H coupling constants of the sugar moieties and conformer populations (N/S) of 2′-deoxyribonucleosides 1–3 at 303 K^a.

	3JH,H (Hz)								Conformation
	1′,2′	1′,2′′	2′,3′	2′′,3′	3′,4′	4′,5′	4′,5′′		N (%)	S (%)	γ(+)g	γt	γ(–)g
1	7.30	6.10	7.00	3.10	3.40	3.20	4.30		31	69	62	25	13
2a	6.60	6.80	6.90	3.70	3.60	4.00	5.80		37	63	36	42	22
2b	6.60	6.70	6.80	3.70	3.90	4.30	5.90		37	63	32	43	25
3	7.90	6.40	6.20	3.10	3.00	3.87	4.82		25	75	48	32	20

^aSolvent D₂O; r.m.s. < 0.4 Hz; ½ΔJ_max½ < 0.4 Hz.