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Table 2 13C NMR data of polyphenols isolated from Acacia hydaspica ethyl-acetate extract

From: Antioxidant activity of polyphenolic compounds isolated from ethyl-acetate fraction of Acacia hydaspica R. Parker

Carbon 7-O-galloyl-catechins δ in ppm
(GC; C1)a
(+)-catechins
δ in ppm
(C; C2)a
Methyl gallate
δ in ppm
(MG; C3)b
C-1 120.912
C-2 81.975 81.411 108.901
C-3 66.941 66.717 145.121
C-4 27.211 28.012 137.760
C-4a 105.957 99.331
C-6 100.946 94.314 108.901
C-8 104.521 95.389
C-5 155.354 156.317 145.120
C-7 150.343 156.317
C-8a 156.070 156.317
C-1′ 130.656 130.870
C-2′ 113.832 114.026
C-3′ 146.281
C-4′ 145.206
C-5′ 114.548 115.101
C-6′ 118.685
C-1 galloyl 119.201
C-2 galloyl 109.179
C-3 galloyl 144.973
C-4 galloyl 138.881
C-5 galloyl 144.973
C-6 galloyl 109.179
COO– 165.734
C=O 166.270
Methyl 51.012
  1. a DMSO-d6 and b indicates acetone–d6. Dashes indicate that given carbon is not present in the molecule