Table 2.

13C NMR data for compounds 6–8, 12, and 13

Carbon	δCa
	6	7	8	12	13
1	41.0 t	38.8 t	39.2 t	40.9 t	38.3 t
2	70.0 d	78.8 d	76.5 d	76.0 d	72.6 d
3	78.5 d	69.0 d	76.1 d	72.2 d	75.5 d
4	30.3 t	32.5 t	30.5 t	29.9 t	30.9 t
5	40.6 d	39.7 d	40.2 d	39.6 d	40.3 d
6	29.3 t	29.3b t	29.2b t	29.2b t	29.4b t
7	33.3 t	33.3 t	33.2 t	33.2 t	33.1 t
8	36.3 d	36.4 d	36.4b d	36.4 d	36.4 d
9	56.6 d	56.7 d	56.6 d	56.7 d	56.4 d
10	36.4 s	36.8 s	36.4b s	36.3 s	36.3 s
11	22.0 t	22.0 t	22.0 t	22.0 t	21.9 t
12	41.5 t	41.5 t	41.4 t	41.4 t	41.4 t
13	43.8 s	43.8 s	43.8 s	43.8 s	43.8 s
14	57.9 d	57.9 d	57.9 d	57.9 d	57.8 d
15	25.2 t	25.2 t	25.2 t	25.2 t	25.2 t
16	29.3 t	29.4b t	29.3b t	29.3b t	29.3b t
17	57.7 d	57.7 d	57.7 d	57.7 d	57.7 d
18	12.6 q	12.6 q	12.5 q	12.5 q	12.6 q
19	14.6 q	14.2 q	14.3 q	14.2 q	14.4 q
20	37.1 d	37.1 d	37.1 d	37.1 d	37.1 d
21	19.2 q	19.2 q	19.2 q	19.2 q	19.2 q
22	37.4 t	37.4 t	37.4 t	37.4 t	37.4 t
23	24.9 t	24.9 t	24.9 t	24.9 t	24.9 t
24	40.7 t	40.7 t	40.7 t	40.7 t	40.7 t
25	29.1 d	29.1 d	29.1 d	29.1 d	29.1 d
27	22.9b q	22.9bq	22.9b q	22.9b q	22.9b q
26	23.2b q	23.2b q	23.2b q	23.2b q	23.2b q
CH3				21.1 q	21.3 q
CO				171.6 s	171.6 s

^aRecorded at 125MHz in methanol-d₄; multiplicity by DEPT.

^bChemical shifts are interchangeable.