Table 4.

Calculated ¹H chemical shifts (δ_H, ppm) and ¹H,¹H spin-spin coupling constants (J_HH, Hz) of the 3-O-α-rhamnopyranosyl-(1→6)-β-glucopyranosyl moiety of 10^a

Proton	δH (ppm), multiplicity	Coupling	JHH (Hz)
β-Glucopyranosyl
H-1″	5.342, ps-db	H-1″, H-2″	7.73
H-2″	3.220, ps-ddd	H-2″, OH-2″	4.71
OH-2″	5.286, ps-d	H-2″, H-3″	9.02
H-3″	3.205, ps-ddd	H-3″, OH-3″	4.89
OH-3″	5.116, ps-d	H-3″, H-4″	8.72
H-4″	3.048, ps-ddd	H-4″, OH-4″	5.83
OH-4″	5.075, d	H-4″, H-5″	9.81
H-5″	3.238, ddd	H-5″, H-6″a	1.75
H-6″a	3.701, dd/br d	H-5″, H-6″b	6.92
H-6″b	3.281, dd	H-6″a, H-6″b	−11.24
α-Rhamnopyranosyl
H-1‴	4.376, d	H-1‴, H-2‴	1.59
H-2‴	3.384, ddd/br t	H-2‴, OH-2‴	4.09
OH-2‴	4.351, br d	H-2‴, H-3‴	3.01
H-3‴	3.275, ddd	H-3‴, OH-3‴	5.69
OH-3‴	4.400, br d	H-3‴, H-4‴	9.50
H-4‴	3.067, ddd/dt	H-4‴, OH-4‴	3.62
OH-4‴	4.535, br d	H-4‴, H-5‴	9.28
H-5‴	3.265, dq	H-5‴, H3-6‴	6.21
H3-6‴	0.987, d

^aThe δ_H and J_HH values were generated via ¹H iterative Full Spin Analysis (HiFSA) using experimental NMR data acquired in DMSO-d₆ at 600 MHz and 298 K.

^bThe “pseudo” (ps-) prefix indicates proton signals belonging to a higher order spin system.