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Fig. 3 | BMC Complementary and Alternative Medicine

Fig. 3

From: Inhibitory activities of selected Sudanese medicinal plants on Porphyromonas gingivalis and matrix metalloproteinase-9 and isolation of bioactive compounds from Combretum hartmannianum (Schweinf) bark

Fig. 3

Terchebulin. Tan powder. LC-MS (negative ion mode) m/z: 1083 (M-H); 1H–NMR (in CD3OD): δ (ppm) 3.04 (t, J = 11.6 Hz, one of the H-6″), 4.21 (t, J = 10.3 Hz, H-5″), 4.48 (t, J = 8.9 Hz, one of the H-6″), 4.78 (t, J = 11.0 Hz, H-4″), 4.98 (dd, J = 3.5, 9.7 Hz, H-2″), 5.23 (d, J = 2.8 Hz, H-1″), 5.64 (t, J = 9.6 Hz, H-3″), 6.37 (s, H-B6), 6.42 (s, H-D6), 6.56 (s, H-A2), 6.79 (s, H-C2), 7.48 (s, H-5). 13C–NMR (in CD3OD): δ (ppm) 63.4 (C-6″), 68.5 (C-4″), 69.0 (C-5″), 74.1 (C-3″), 74.2 (C-2″), 90.2 (C-1″), 106.4 (C-B6), 106.5 (C-D6), 106.8 (C-A2), 108.5(C-C2), 112.0–114.0 (C-A6, B2, 5, 5′, 1, 1′, 2, 2′, 6, 6′), 116.0 (C-C6), 122.2 (C-D1), 123.5 (C- B1,C1), 125.1 (C-A1), 135.9 (C-B4), 136.1 (C-A4), 137.5 (C-C4), 137.6 (C-D4), 138.4 (C-3), 139.1 (C-D3), 140.7 (C-3′), 141.7 (C-D2), 143.4–143.6 (C-A5, B3, C5), 144.5–144.6 (C-A3, B5, C3, D5), 147.4 (C-4′), 150.3 (C-4), 158.3 (C-7′), 159.5 (C-7), 166.9 (C-D7), 167.0 (C-C7), 168.9 (C-A7), 169.5 (C-B7)

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