Table 2.

¹³C NMR Data of Compounds 1-2^c

no.	1a	1b	2b
1	22.7	22.4	21.3
2	27.6	27.7	27.1
3	74.8	76.2	75.5
4	35.3	35.9	35.7
5	76.3	77.5	75.5
6	37.3	37.0	38.7
7	25.0	25.1	25.5
8	40.8	41.1	42.2
9	45.1	45.2	46.1
10	45.4	45.7	56.7
11	68.7	69.1	68.5
12	50.7	50.6	50.1
13	51.0	51.8	51.0
14	85.0	85.9	85.4
15	33.5	33.5	33.1
16	28.0	28.0	28.0
17	51.4	51.1	51.5
18	18.2	17.8	17.6
19	65.6	65.9	211.1
20	174.8	177.2	177.2
21	74.0	75.5	75.5
22	118.1	118.1	118.1
23	175.8	177.7	177.5
1′	99.3	99.5	99.5
2′	65∼80d	72.3	72.4
3′	65∼80d	72.2	72.2
4′	83.8	84.0	84.0
5′	65∼80d	69.9	69.9
6′	18.7	18.3	18.3
1″	104.3	103.7	103.7
2″	65∼80d	72.4	72.4
3″	65∼80d	73.3	73.3
4″	65∼80d	68.6	68.6
5″	65∼80d	75.4	75.4
6″	63.0	62.8	62.8

^ain pyridine-d₅.

^bin CD₃OD.

^cδ (ppm) 100 MHz.

^dresonances not assigned because of overlapping

¹H NMR resonances in the HMBC spectrum.