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Year of first report: | 1995 |
Formula: | C31H50O9 |
Molecular weight: | 566 |
Occurence in plants: |
Penstemon venustus [Scrophulariaceae] » ![Wikipedia: <br />
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Occurence in animals: |
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CI-MS (NH3) m/z | | FAB-MS (negative-ion mode) m/z (relative intensity %) | 565 [M-H]- (7), 479 (12), 183 (100), 103 (20), 91 (43) | EI-MS m/z (relative intensity %) | 530 [M-2H2O]+ (0.5), 512 (0.9), 494 (1), 468 (2), 444 (2), 426 (11), 387 (6), 363 (32), 345 (100), 327 (40), 285 (18), 269 (16), 215 (16), 173 (19), 99 (51), 81 (28), 69 (40). | HR-MS | |
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CD3OD | 01 | 37.4 | 02 | 68.7 | 03 | 68.5 | 04 | 32.8 | 05 | 51.8 | 06 | 206.4 | 07 | 122.2 | 08 | 167.8 | 09 | 35.1 | 10 | 39.3 | 11 | 21.5 | 12 | 32.6 | 13 | 48.7 | 14 | 85.2 | 15 | 31.8 | 16 | 21.5 | 17 | 50.8 | 18 | 18.1 | 19 | 24.4 | 20 | 77.6 | 21 | 21.9 | 22 | 80.8 | 23 | 26.1 | 24 | 41.5 | 25 | 71.0 | 26 | 29.5 | 27 | 28.9 | ac1' | 173.5 | ac2' | 45.2 | ac3' | 65.6 | ac4' | 23.2 |
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CD3OD | 01-Ha | 1.42 | 01-He | 1.79 | 02-Ha | 3.83 | 03-He | 3.94 | 04-Ha | 1.70 | 04-He | 1.70 | 05-H | 2.38 | 07-H | 5.80 (d, 2) | 09-Ha | 3.15 | 11-Ha | 1.69 | 11-He | 1.81 | 12-Ha | 2.15 (ddd, 13.1, 13.1, 4.9) | 12-He | 1.86 | 15-Ha | 1.95 | 15-Hb | 1.61 | 16-Ha | 2.03 | 16-Hb | 1.75 | 17-H | 2.38 | 18-Me | 0.87 (s ) | 19-Me | 0.95 (s ) | 21-Me | 1.28 (s ) | 22-H | 4.92 | 23-Ha | 1.14 | 23-Hb | 1.47 | 24-Ha | 1.77 | 24-Hb | 1.42 | 26-Me | 1.17 (s ) | 27-Me | 1.15 (s ) | H-2'a | 2.43 (dd, 15.1, 8.3) | H-2'b | 2.57 (dd, 15.1, 4.8) | H-3' | 4.23 | H4'-Me | 1.23 (d, 6.2) |
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M.P. | | [α]D20 | + 57 ° (c 0.2; MeOH) | IR (KBr) ν max (cm-1) | | UV (EtOH) λ max (log ε) | |
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HPTLC | | TLC | | GLC | | HPLC | RP-HPLC : Lichrosorb RP-18 (H2O-MeOH), gradient (0-32 min) : 10-93% MeOH, flow-rate 2 ml.min-1. |
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Permanent link to this datasheet: VENUSTONE
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