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. Author manuscript; available in PMC: 2012 Apr 27.
Published in final edited form as: Tetrahedron Lett. 2011 Apr 27;52(17):2206–2208. doi: 10.1016/j.tetlet.2010.11.159

Table 1.

1H and 13C NMR Data of Compounds 1 and 2

# 1 (1H)a 2 (1H)a 2 (1H)b # 1 (13C)c 2 (13C)d
1 1 155.7 154.7
2 2 141.4 142.7
3 3 157.9 154.4
4 7.27 (s) 7.27 (s) 7.25/7.27 (s) 4 104.3 107.3/107.7
5 5 127.6 129.5/130.5
6 6 182.5 182.8
7 7 141.3 140.8
8 8 140.4 140.8
9 9 187.5 189.9
10 10 110.7 111.9
1′ 2.79 (d 20.1) 2.78 (d 19.8) 2.63/2.67 (d 19.8) 1′ 31.7 32.3
2.53 (d 20.1) 2.52 (d 19.8) 2.41/2.43 (d 19.8)
2′ 2′ 96.0 96.8
3′ 1.80 (m) 1.77 (m) 1.73 (m) 3′ 42.2 42.8
4′ 1.2~1.6 (m) 1.2~1.6 (m) 1.2~1.6 (m) 4′ 22.6 23.7
5′ 1.2~1.6 (m) 1.2~1.6 (m) 1.2~1.6 (m) 5′ 30.6 31.0
6′ 1.2~1.6 (m) 1.2~1.6 (m) 1.2~1.6 (m) 6′ 29.7 30.8
7′ 1.2~1.6 (m) 1.2~1.6 (m) 1.2~1.6 (m) 7′ 29.2 30.4
8′ 1.2~1.6 (m) 1.2~1.6 (m) 1.2~1.6 (m) 8′ 23.0 24.5
9′ 0.90 (t 6.6) 0.88 (t 6.6) 0.91 (t 6.6) 9′ 14.1 14.4
1″ 4.73 (d 18.6) 4.71 (d 18.6) 4.59 (m) 1″ 56.5 56.5
4.68 (d 18.6) 4.66 (d 18.6)
1-OH 12.05 11.90 (s)
2-OCH3 4.05 (s) 2-OCH3 61.0
3-OCH3 3.99 (s) 4.01 (s) 3.94/3.90 (s) 3-OCH3 57.4 58.1
a

δ (ppm) 500 MHz in CDCl3; multiplicities; J values (Hz) in parentheses.

b

δ (ppm) 500 MHz in CD3OD; multiplicities; J values (Hz) in parentheses.

c

δ (ppm) 150 MHz in CDCl3.

d

δ (ppm) 150 MHz in CD3OD.