Table 2.

¹³C NMR data for compounds 51–54 in DMSO-d₆ (100 MHz, δ in ppm)

	δ C
Position	51	52	53	54
1	195.9	196.5	199.0	199.0
2	49.0	49.6	49.2	49.5
3	49.2	48.6	48.5	48.1
4	131.3	131.9	131.4	131.6
5	126.4	126.1	126.0	125.7
6	39.1	39.2	38.7	38.7
7	42.4	42.5	42.1	42.2
8	33.3	33.4	33.0	33.0
9	35.8	35.9	35.5	35.5
10	28.1	28.1	27.6	27.7
11	39.4	39.9	39.3	39.3
12	14.0	14.2	13.4	13.5
13	130.9	131.4	130.5	130.6
14	132.7	133.0	132.1	132.5
15	131.8	132.0	131.1	131.6
16	130.9	130.5	128.0	127.7
17	42.7	42.8	17.8	17.9
18	66.3	66.3
19	23.5	23.5
20	22.6	22.7	22.2	22.3
21	22.8	22.9	22.5	22.5
2’	176.6	175.8	179.2	179.0
3’	100.9	101.6	99.4	99.8
4’	190.9	190.5	190.7	190.6
5’	68.1	67.4	63.2	62.9
6’	58.4	58.6	60.8	60.7
N-Me	27.2	27.3