Table 2.

NMR data of 6-ethylErA

Carbon no.	13C shift (δ), ppm	1H shift (δ), ppm
1	175.5
2	44.8	2.93
3	80.7	3.79
4	37.6	1.93
5	81.6	3.86
6	76.7
7	38.4	1.72, 193
8	44.7	2.70
9	222.4
10	37.7	3.01
11	68.9	3.82
12	74.4
13	76.7	5.06
14	21.2	1.47, 1.91
15	10.7	0.84
2-CH3	15.9	1.29
4-CH3	9.7	1.14
6-CH2-CH3	27.6	1.70, 2.02
6-CH2-CH3	7.7	0.98
8-CH3	18.6	1.17
10-CH3	12.3	3.01
12-CH3	68.9	3.82
1′	102.5	4.48
2′	72.5	3.21
3′	65.3	2.44
4′	28.3	1.22, 1.63
5′	68.7	3.52
6′	21.6	1.22
3′-N(CH3)2	40.7	2.29
1"	96.2	4.92
2"	35.3	2.34, 1.66
3"	72.4
4"	77.7	3.02
5"	66.3	3.98
6"	21.6	1.29
3"-OCH3	49.7	3.33
3"-CH3	21.4	1.26

Numbering of carbon atoms of Er is as described (17).