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. 2019 Oct 23;9(59):34184–34195. doi: 10.1039/c9ra05899k
Position 1a 2a 3b 4a 5a 6a
δ C δ H (J in Hz) δ C δ H (J in Hz) δ C δ H (J in Hz) δ C δ H (J in Hz) δ C δ H (J in Hz) δ C δ H (J in Hz)
1 173.6 173.6 172.8 172.5 172.4 172.8
2 50.7 50.7 51.8 51.1 51.1 50.1
3 29.0 1.76 dd (8.4, 13.9) 29.0 1.76 m 41.4 1.86 d (13.7) 40.5 2.23 dd (7.7, 13.1) 40.5 2.24 dd (5.2, 13.1) 40.5 1.79 d (14.1)
2.17 t (13.9) 2.17 t (11.2) 2.43 dd (8.2, 13.7) 2.34 dd (7.7, 13.4) 2.35 dd (7.9, 13.1) 2.68 dd (8.1, 14.1)
4 19.7 1.97 m 19.7 1.87 m 71.0 4.70 m 71.2 4.73 qd (1.0, 6.0) 71.3 4.75 qd (1.9, 6.7) 71.5 4.78 qd (2.5, 7.7)
5 29.6 1.86 t (8.7) 29.6 1.86 m 41.3 2.13 m 40.7 1.90 dd (0.7, 14.4) 40.7 1.91 dd (0.8, 13.5) 40.9 2.04 dd (5.6, 13.3)
1.98 m 1.93 m 2.22 dd (9.1, 14.0) 2.45 dd (8.4, 14.4) 2.46 dd (9.0, 13.5) 2.44 dd (7.7, 13.3)
6 47.1 47.1 47.2 46.5 46.5 47.6
7 134.4 134.3 134.3 134.1 134.1 133.7
8 144.7 144.6 145.5 144.4 144.5 144.5
9 115.1 6.74 s 115.3 6.71 s 116.4 6.94 s 115.6 6.72 s 115.3 6.74 s 115.3 6.74 s
10 122.9 120.8 124.8 120.6 123.0 123.2
11 152.9 152.9 152.4 152.9 152.9 153.0
12 113.0 6.64 s 112.9 6.63 s 112.3 6.62 s 112.6 6.01 s 112.9 6.62 s 112.8 6.63 s
13 19.8 0.93 s 19.8 0.93 s 20.2 0.87 s 20.4 0.90 s 20.4 0.91 s 26.0 1.15 s
14 25.1 1.10 s 25.1 1.11 s 26.6 1.28 s 26.1 1.34 s 26.2 1.35 s 20.6 1.09 s
15 64.4 4.85 s 71.8 4.66 s 68.5 4.53 s 73.7 4.62 s 64.4 4.86 s 64.4 4.86 s
16 66.5 3.63 q (6.9) 66.6 3.57 q (6.4) 58.5 3.47 s
17 15.0 1.29 t (6.9) 15.5 1.2 t (6.4)
a

1H and 13C NMR data (δ) were measured in chloroform-d at 400 and 100 MHz.

b

1H and 13C NMR data (δ) were measured in acetone-d6 at 400 and 100 MHz.