Research Article
Antiaging of Cucurbitane Glycosides from Fruits of Momordica charantia L.
Table 1
1H-NMR (500 MHz) and 13C-NMR (125 MHz) data of compound 1 in pyridine-d5.
| Position | Compound 1 | δH (J in Hz) | δC |
| 1α | 1.46 | 19.2 | 1β | 1.91 | — | 2α | 1.75 | 27.8 | 2β | 2.17 | — | 3α | 3.73 (br s) | 83.9 | 4 | — | 39.5 | 5 | — | 86.0 | 6 | 6.18 (dd, 2.0, 9.7) | 133.6 | 7 | 5.63 (dd, 3.6, 9.7) | 132.0 | 8β | 3.15 (br s) | 42.7 | 9 | — | 48.6 | 10α | 2.48 (dd, 5.6, 12.7) | 42.1 | 11α | 1.75 | 23.7 | 11β | 1.68 | — | 12α | 1.60 | 31.3 | 12β | 1.55 | — | 13 | — | 45.8 | 14 | — | 48.7 | 15α | 1.31 | 34.3 | 15β | 1.31 | — | 16α | 1.94 | 28.7 | 16β | 1.32 | — | 17α | 1.50 | 51.2 | 18 | 0.91 (s) | 15.3 | 19 | 4.91 (s) | 112.8 | 20 | 1.50 | 37.3 | 21 | 0.95 (d, 5.6) | 19.4 | 22α | 1.83 | 40.5 | 22β | 2.32 | — | 23 | 5.76 (m) | 130.4 | 24 | 6.32 (d, 15.3) | 135.1 | 25 | — | 143.0 | 26α | 4.96 (s) | 115.1 | 26β | 5.10 (s) | — | 27 | 1.92 (s) | 19.3 | 28 | 0.83 (s) | 25.3 | 29 | 1.47 (s) | 21.7 | 30 | 0.90 (s) | 20.4 | −OCH3 | 3.52 (s) | 58.1 | 1´ | 5.52 (d, 7.8) | 102.8 | 2´ | 3.94 (dt, 2.6, 7.6) | 74.2 | 3´ | 4.76 (d, 2.8) | 72.2 | 4´ | 4.23 (td, 2.8, 9.3) | 69.7 | 5´ | 4.50 (m) | 77.0 | 6´α | 4.43 (m) | 63.7 | 6´β | 4.57 (m) | — |
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