Table 2.

The ¹H NMR (400 MHz) data of compounds 2, 6, and 7 (Me₂CO-d₆)^a,^b

No.	2* δH	6* δH	7 δH
2	5.58 – 5.41 m	5.57 – 5.41 m	5.60 dt (13.0, 2.8)
3	3.23 – 3.07 m, H-3ax 2.91 – 2.60 m, H-3eq	3.24 – 3.06 m, H-3ax 2.89 – 2.62 m, H-3eq	3.38 – 3.21 m, H-3ax 2.90 – 2.73 m, H-3eq
6	5.96–6.01 m	5.99 – 5.92 m	5.96 s
8	5.96–6.01 m	6.01 d (2.1)	5.99 s
2′	7.47 – 7.40 m	7.49 – 7.40 m	7.71 – 7.62 m
5′	7.04 dd (8.7, 4.9)	7.04 dd (8.8, 4.2)	7.24 d (9.1)
6′	7.47 – 7.40 m	7.49 – 7.40 m	7.71 – 7.62 m
2″	5.58 – 5.41 m	5.57 – 5.41 m	------------------------
3″	3.23 – 3.07 m, H-3ax 2.91 – 2.60 m, H-3eq	3.24 – 3.06 m, H-3ax 2.89 – 2.62 m, H-3eq	6.65 s
6″	6.12 d (4.6)	6.12 d (4.9)	6.43 s
2‴	7.37 d (8.7)	7.28 dd (8.5, 3.2)	7.60 dd (8.0, 5.2)
3‴	6.90 t (8.7)	6.87 – 6.75 m	6.97 – 6.85 m
5‴	6.90 t (8.7)	6.87 – 6.75 m	6.97 – 6.85 m
6‴	7.37 d (8.7)	7.28 dd (8.5, 3.2)	7.60 dd (8.0, 5.2)
5-OH	12.21 s	12.21 s	12.18 s
5″-OH	12.30 s	12.31 s	13.12 s
4′-OCH3	3.82 s, 3.77 s	3.79 d (13.2)	3.79 s
4‴–OCH3	3.79 s, 3.77 s	------------------------	------------------------

^aChemical shift values in ppm and J values (in Hz) are presented in parentheses.

^bThe assignments are based on DEPT, HMQC, HMBC and NOE experiments.

^*Multiplicity is complicated because of rotational isomerism.