Table 1.

¹H and ¹³C NMR data for compounds 1 and 2 recorded in CDCl₃ ^a.

	1		2
Position	δ H (J Hz)	δ C	δ H (J Hz)	δ C
1	-	174.0 C	-	174.7 C
2	-	134.4 C	-	131.3 C
3a	2.24 br t	25.1 CH2	2.38 m	33.4 CH2
3b	2.24 br t	25.1 CH2	2.51 m	33.4 CH2
4	1.51 m	25.3 CH2	3.81 m	70.0 CH
5	1.29 m	29.4 CH2	1.62 m	29.6 CH2
6	3.82 m	71.4 CH	1.22 br s	29.6–29.8 CH2
7	1.33 m	32.0 CH2	1.22 br s	29.6–29.8 CH2
8	1.23 br s	29.5 CH2	1.22 br s	29.6–29.8 CH2
9	1.23 br s	29.5 CH2	1.22 br s	29.6–29.8 CH2
10	1.53 m	27.3 CH2	1.22 br s	29.6–29.8 CH2
11	3.88 m	82.5 CH	1.35 m	33.4 CH2
12	1.93 m	29.0 CH2	3.37 m	74.2 CH
13	1.77 m	24.6 CH2	3.79 m	83.2 CH
14	3.91 m	82.7 CH	1.93 m	29.1 CH2
15	3.78 m	82.1 CH	1.56 m	28.5 CH2
16	1.56 m	29.0 CH2	3.81 m	82.2 CH
17	1.94 m	28.5 CH2	3.91 m	82.8 CH
18	3.79 m	83.2 CH	1.81 m	24.6 CH2
19	3.38 m	74.1 CH	1.97 m	29.0 CH2
20	1.35 m	33.2 CH2	3.90 m	82.4 CH
21	1.23 br s	29.5 CH2	1.59 m	29.4 CH2
22	1.23 br s	29.5 CH2	1.45 m	37.5 CH2
23	1.40 m	37.3 CH2	3.84 m	71.5 CH
24	3.55 m	71.7 CH	1.32 m	32.0 CH2
25	1.39 m	37.4 CH2	1.22 br s	29.6–29.8 CH2
26	1.23 br s	25.1–29.2 CH2	1.22 br s	29.6–29.8 CH2
27	1.23 br s	25.1–29.2 CH2	1.22 br s	29.6–29.8 CH2
28	1.23 br s	25.1–29.2 CH2	1.22 br s	29.6–29.8 CH2
29	1.23 br s	25.1–29.2 CH2	1.22 br s	29.6–29.8 CH2
30	1.23 br s	25.1–29.2 CH2	1.22 br s	29.6–29.8 CH2
31	1.23 br s	25.1–29.2 CH2	1.22 br s	29.6–29.8 CH2
32	1.26 m	22.7 CH2	1.22 br s	29.6–29.8 CH2
33	1.27 m	32.0 CH2	1.28 m	32.5 CH2
34	0.86 t (6.76)	14.1 CH3	0.86 t (6.9)	14.2 CH3
35	6.97 br q (1.48)	149.0 CH	7.18 br d (1.3)	151.9 CH
36	4.98 dq (6.53, 5.12, 6.76)	77.4 CH	5.05 qq (5.48, 6.8, 6.84)	78.0 CH
37	1.38 d (6.8)	19.2 CH3	1.42 d (6.8)	19.2 CH3

^a δ from TMS (ppm). Assignments confirmed by COSY, HMBC and HSQC experiments (supplementary material) ¹H NMR [400 MHz, CDCl₃, J (Hz)] and ¹³C NMR (100 MHz) data for compounds 1 and 2. br (broad signal).