Table 9.

¹H and ¹³C NMR spectral data for compounds 15, 16, and 17

Position	15		16		17
	δH	δC	δH	δC	δH	δC
2	7.1, br d	131.4, d	6.9, d(6)	132.1, d	7.0, br d	131.5, d
3	6.8, br d	101.0, d	6.8, d(6)	101.2, d	6.8, br d	113.4, d
3a		149.2, s		149.4, s		149.2, s
5	7.6, d(6)	147.0, d	8.0, d(7.6)	146.4, d	7.5, br d	147.0, d
6	7.5, br d	118.3, d	7.2, d(7.6)	113.4, d	7.5, br d	124.8, d
6a		136.7, s		135.5, s		136.5, s
7	6.8, s	101.0, d	6.7, s	101.1, d	6.8, s	100.7, d
8		151.6, s		157.2, s		158.5, s
9		135.0, s		135.0, s		135.0, s
9a		123.8, s		123.9, s		124.0, s
9b		117.9, s		118.1, s		118.0, s
NCH3	3.9, s	45.3, q	3.8, s	45.4, q	3.9, s	45.5, q
OCH3	3.9, s	56.8, q	3.9, s	56.7, q	3.9, s	56.8, q
1′		163.2, s		164.9, s		164.9, s
2′		125.0, s		125.3, s		125.2, s
3′	8.0, br d	127.8, d	8.1, d(8)	130.5, d	8.1, d(8)	130.5, d
4′	7.4, dd(8)	113.6, d	7.3, d(8)	129.7, d	7.6, d(8)	126.0, d
5′		157.2, s		145.5, s		157.3, s
6′		149.0, s	7.3, d(8)	129.7, d	7.6, d(8)	126.0, d
7′	8.0, br d	118.1, d	8.1, d(8)	130.5, d	8.1, d(8)	130.5, d
8′			2.5, s	21.8, q		35.3, s
9′					1.4, s	31.0, q
10′					1.4, s	31.0, q
11′					1.4, s	31.0, q

Measured in CDCl₃ at 400 MHz for ¹H and 100 MHz for ¹³C, respectively. J values in Hz.