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Table 3 Assignments of 13C–1H correlation signals in the 2D-HSQC NMR spectra from lignin

From: Elucidation of ligninolysis mechanism of a newly isolated white-rot basidiomycete Trametes hirsuta X-13

Signals

δCH

Assignments

Bβ

52.19/3.54

Phenylcoumaran (B)

Cβ

55.98/3.37

Cβ–Hβ in resinol (C)

MeO

56.23/3.72

C–H in methoxyls

Iγ

63.65–65.41/3.88–3.97

Cγ–Hγ in cinnamyl alcohol end-groups (I)

Aγ

62.48/3.45

Cγ–Hγ in phenylglycerol (A)

Aβ

75.89/3.50

Cβ–Hβ in phenylglycerol (A)

Aα

77.70/4.39

Cα–Hα in phenylglycerol (A)

Cγ

71.34/3.79

Cγ–Hγ in resinol (C)

S2,6

106.64/7.23

C2,6–H2,6 in syringyl units (S)

G2

115.58/6.82

C2–H2 in guaiacyl units (G)

G5

115.48/6.81

C5–H5 in guaiacyl units (G)

G6

115.49/6.80

C6–H6 in guaiacyl units (G)

FA2

111.14/7.19

C2–H2 in ferulate (FA)

pCA

115.39/6.67

C–H in p-coumarates (pCA)

FA6

127.36/7.38

C6–H6 in ferulate (FA)

H2,6

129.17/7.87

C2,6–H2,6 in p-hydroxyphenyl units (H)