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Table 4 1H and 13CNMR spectroscopic data for nocamycin III (4) and nocamycin IV (5)

From: Identification of nocamycin biosynthetic gene cluster from Saccharothrix syringae NRRL B-16468 and generation of new nocamycin derivatives by manipulating gene cluster

Position 4 a 5 b
δ C type δ H mult. (J in Hz) δ C type δ H mult. (J in Hz)
1 175.5   Not observed  
2 116.6 7.17, d (15.7) Not observed 7.33, d (14.2)
3 150.3 7.60, d (15.7) Not observed 7.56, d (15.6)
4 135.3   136.5  
5 144.5 6.05, d (10.2) 144.0 6.04, d (9.4)
6 34.6 2.89, m 35.7 2.97, m
7 78.2 3.66, dd (11.2, 2.0) 79.3 3.75, dd (11.3, 1.6)
8 35.2 2.0, m 36.7 1.95, m
9 70.7 4.0, t (6.3) 71.7 4.04, t (6.2)
10 23.9 1.98, m; 2.4, m 24.4 2.16, m; 2.43, m
11 125.9 5.84, d (3.5) 125.8 6.23, d (4.2)
12 130.8   135.7  
13 101.3   100.8  
14 43.7 1.94, m 45.2 1.89, dd (14.1, 7.0)
15 68.9 4.29, dq (8.5, 6.3) 69.0 4.36, dq (12.5, 6.3)
16 20.7 1.23, d (6.3) 20.6 1.22, d (6.3)
17 12.4 1.92, s 12.6 1.94, s
18 17.0 1.07, d (7.0) 17.7 1.09, d (6.8)
19 13.2 0.71, d (6.9) 13.4 0.79, d (6.9)
20 18.0 1.62, s 62.2 3.96, d (13.1); 4.07, d (14.9)
21 11.8 0.79, d (7.0) 11.2 0.85, d (6.9)
1′     
2′ 176.7   Not observed  
3′ Not observed   Not observed  
4′ 192.8   Not observed  
5′ 51.7 3.84, s 52.0 3.79, s
  1. aMeasured in CDCl3
  2. bMeasured in MeOD