Table 2.

¹³C and ¹H NMR assignments for compounds 5 and 6 ^a.

No.	5 b		6 b
	ppm, Type	δ, mult (J in Hz)	ppm, Type	δ, mult (J in Hz)
1	189.7, C		189.7, C
2	46.5, CH2	4.71, d (5.2)	46.6, CH2	4.74, d (5.2)
3		9.35, t (5.2)		9.33, t (5.2)
4	154.5, C		154.5, C
5		10.20, s		10.20, s
1′		12.00, s		NDc
2′	133.7, CH	8.47, s	134.6, CH	8.50, s
3′	113.8, C		113.9, C
3a′	125.4, C		124.4, C
4′	121.1, CH	8.18, d (7.8)	122.8, CH	8.11, d (8.4)
5′	121.9, CH	7.22, dd (7.8, 7.0)	128.4, CH	7.36, dd (8.4, 1.6)
6′	122.9, CH	7.23, dd (8.0, 7.0)	114.9, C
7′	112.2, CH	7.49, d (8.0)	115.5, CH	7.69, d (1.6)
7a′	136.5, C		137.4, C
1′′		11.50, s		11.60, s
2′′	129.3, CH	8.34, d (2.2)	129.2, CH	8.33, s
3′′	108.4, C		108.4, C
3a′′	119.5, C		119.4, C
4′′	121.5, CH	7.96, d (8.5)	121.5, CH	7.95, d (8.6)
5′′	111.8, CH	6.70, dd (8.5, 2.0)	111.8, CH	6.74, dd (8.6, 2.0)
6′′	154.0, C		154.0, C
7′′	97.1, CH	6.80, d (2.0)	97.1, CH	6.84, d (2.0)
7a′′	137.6, C		137.6, C
8′′	165.5, C		165.5, C

^a Data were obtained in DMSO-d₆. ^b Data were measured at 600/150 (5) and 800/200 (6) MHz. ^c Not detected.