Table 2.

NMR (400 MHz) spectral data of compound 1 recorded in CDCl₃.

Position	δH (multiplicity; J in Hz)	δC
1	1.72–1.58a	29.6
2	1.72–1.58a	17.3
3	2.24 (ddd; 13.71, 7.66, 5.64) 1.53 (ddd; 14.28, 7.45, 6.06)	27.7
4		42.7
5	1.92 (d; 4.66)	47.8
6	5.00 (brt; 4.52)	71.3
7	6.18 (m)	121.8
8		132.2
9		158.7
10		35.0
11	5.73 (d; 1.52)	111.7
12		163.6
13	4.96 (dt; 13.57) 4.87 (d; 13.57)	69.5
14		180.8
15	1.30 (s)	24.1
16	1.15 (s)	24.7

^aOverlapping chemical shifts.