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Table 1 NMR spectroscopic data of compound Aa)

From: Screening for proteins related to the biosynthesis of hispidin and its derivatives in Phellinus igniarius using iTRAQ proteomic analysis

position trans- cis-
δH δC δH δC
2   173.9   173.5
3 * 90.0b) * *
4   168.0   168.1
5 6.11 s 102.1 6.13 s 104.0
6   162.2   162.1
7 6.60 d J = 16.0 Hz 117.1 5.98 d J = 12.8 Hz 119.0
8 7.31 d J = 16.0 Hz 137.4 6.72 d J = 12.8 Hz 139.2
9   129.0   128.8
10 7.03 d J = 2.0 Hz 115.0 6.98 d J = 2.0 Hz 117.2
11   147.0   146.3
12   148.8   147.8
13 6.77 d J = 8.0 Hz 116.7 6.73 d J = 8.0 Hz 116.3
14 6.95 dd J = 8.0, 2.0 Hz 122.1 6.80 dd J = 8.0, 2.0 Hz 123.4
  1. a) Data (δ) were measured in CH3OD at 400 MHz for protons and at 100 MHz for carbons. Proton coupling constants (J) in Hz are given in parentheses. The assignments were based on 1H-1H COSY, HSQC, and HMBC experiments.* Indicates the signal is not detected. b) Signals were extracted from HMBC spectrum