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Table 1 1H NMR (500 MHz) data for compounds 24, 7 and 12 in DMSO-d 6 (J in Hz)

From: Overexpression of a type III PKS gene affording novel violapyrones with enhanced anti-influenza A virus activity

Position 2 3 4 7 12
2      
3      
4      
5 5.93, s, 1H 5.94, s, 1H 5.86, s, 1H 5.89, s, 1H 5.88, s, 1H
6      
7 1.72, s, 3H 1.72, s, 3H 1.69, s, 3H 1.70, s, 3H 2.24, dd (14.5, 7.0), 2H
8 2.37, m, 2H 2.38, t (7.5), 2H 2.21, d (6.5), 2H 2.34, m, 2H 2.35, t (7.0), 2H
9 1.35, m, 2H 1.49, m, 2H 1.89, m, 1H 1.52, m, 2H 1.49, m, 2H
10 1.27, m, 2H 1.30, m, 2H 0.88, d (6.5), 3H 1.32, m, 1H 1.26, m, 2H
11 3.15, m, 1H 1.30, m, 2H 0.88, d (6.5), 3H 1.13, m, 2H 1.17, m, 2H
12 1.50, m, 1H    0.83, m, 3H 1.50, m, 1H
13 0.81, dd (10.0, 4.0), 3H 1.32, m, 2H   0.84, m, 3H 0.84, d (6.5), 3H
14 0.81, dd (10.0, 4.0), 3H 0.78, t (7.5), 3H    0.84, d (6.5), 3H
15   0.98, m, 3H    
16      0.92, t (6.5), 3H