Table 1.

1H NMR and 13C NMR spectra of compounds 2 and 3 in CD3OD.

Position	2		3
	δH (J in Hz)	δc, Mult	δH (J in Hz)	δc, Mult
2		158.8, C		158.2, C
3		148.5, C		149.2, C
5	7.26, s	126.9, CH	7.49, s	125.7, CH
6		142.5, C		143.4, C
7	2.63, d (7.1)	38.1, CH2	4.75, br s	74.0, CH
8	2.19,dq (13.8, 6.9)	26.4, CH	2.32, br s	32.5, CH
9	0.89, d (6.6)	22.9, CH3	0.90, m	19.2, CH3
10	0.89, d (6.6)	22.9, CH3	0.90, m	17.7, CH3
11	2.60, d (7.3)	42.6, CH2	2.64, d (7.3)	42.6, CH2
12	2.11, dt (13.6, 6.8)	28.4, CH	2.14, br s	28.6, CH
13	0.89, d (6.6)	22.9, CH3	0.90, m	22.9, CH3
14	0.89, d (6.6)	22.9, CH3	0.90, m	22.9, CH3