Labels | δC/δH(ppm) | Assignments |
---|---|---|
Cβ | 53.7/3.12 | Cβ-Hβ in β-β (resinol) substructures (C) |
Dβ | 56.1/3.09 | Cβ-Hβ in β-1 (spirodienone) substructures (D) |
-OCH3 | 57.3/3.77 | C-H in methoxyls |
Aγ | 60.0/3.38 to 3.71 | Cγ-Hγ in β-O-4 substructures (A) |
A’γ | 63.8/3.83 to 4.30 | Cγ-Hγ in γ-acylated β-O-4′ substructures (A’ and A”) |
Cγ | 71.7/3.81 and 4.17 | Cγ-Hγ in β-β (resinol) substructures (C) |
Aα/A’α | 72.3/4.86 | Cα-Hα in β-O-4 substructures (A, A’, and A”) |
Dα | 82.1/5.12 | Cα-Hα in β-1 (spirodienone) substructures (D) |
A’β | 83.6/4.32 | Cβ-Hβ in γ-acylated β-O-4 substructures (A’ and A”) |
Cα | 85.4/4.64 | Cα-Hα in β-β (resinol) substructures (C) |
Dα’ | 85.4/4.80 | Cα’-Hα’ in β-1 (spirodienone) substructures (D) |
Aβ | 86.5/4.10 | Cβ-Hβ in γ-OH β-O-4 substructures (A) |
Bα | 87.7/5.45 | Cα-Hα in β-5 (phenylcoumaran) substructures (B) |
S2,6 | 103.8/6.68 | C2-H2 and C6-H6 in etherified syringyl units |
S2,6 (Cα = O) | 106.7/7.36 and 7.21 | C2-H2 and C6-H6 in oxidized (Cα = O) syringyl units |
G2 | 111.5/6.99 | C2-H2 in guaiacyl units |
D2’ | 111.6/6.23 | C2’- H2’ in β-1 (spirodienone) substructures (D) |
A”β’ | 114.3/6.24 | Cβ’-Hβ’ in p-coumaroylated substructures (A”) |
G5 | 115.2/6.71 and 6.94 | C5-H5 in guaiacyl units |
A”3’,5’ | 116.2/6.77 | C3’- H3’ and C5’- H5’ in p-coumaroylated substructures (A”) |
D6’ | 118.3/6.19 | C6’- H6’ in β-1 (spirodienone) substructures (D) |
G6 | 119.5/6.83 | C6-H6 in guaiacyl units |
H2,6 | 128.2/7.17 | C2-H2 and C6-H6 in p-hydroxyphenyl units |
A”2’,6’ | 130.5/7.4 | C2’- H2’ and C6’- H6’ in p-coumaroylated substructures (A”) |
A”α’ | 145.1/7.39 | Cα’-Hα’ in p-coumaroylated substructures (A”) |