Table 1.
NMR data of salvianolic acid Y (TSL 1) and salvianolic acid B (methanol-d4, 400 MHz/100 MHz).
| Position | TSL 1 | Salvianolic Acid B | ||
|---|---|---|---|---|
| δH (ppm) | δc (ppm) | δH (ppm) | δc (ppm) | |
| 2 | 5.90 (d,9.2) | 87.0 | 5.81 (d,4.8) | 86.7 |
| 3 | 4.77 (d,9.2) | 53.2 | 4.30 (d,4.8) | 56.4 |
| 4 | - | 123.2 | - | 123.1 |
| 5 | 7.11 (d, 8.5) | 121.3 | 7.11 (d, 8.5) | 120.6 |
| 6 | 6.77 (d, 8.4) | 116.9 | 6.78 (d, 8.4) | 116.7 |
| 7 | - | 145.4 | - | 145.1 |
| 8 | - | 148.2 | - | 147.5 |
| 9 | - | 126.8 | - | 123.1 |
| 1' | - | 127.8 | - | 127.7 |
| 2' | 6.90 (s) | 113.6 | 6.69 | 111.8 |
| 3' | - | 144.4 | - | 144.2 |
| 4' | - | 143.9 | - | 143.6 |
| 5' | 6.68 (ov) | 114.7 | 6.70 (ov) | 114.8 |
| 6' | 6.68 (ov) | 118.4 | 6.70 (ov | 116.8 |
| 1'' | - | 126.9 | - | 127.4 |
| 2'' | 6.48 (d,1.9) | 116.4 | 6.47 (d,1.9) | 115.7 |
| 3'' | - | 143.8 | - | 143.4 |
| 4'' | - | 143.7 | - | 143.4 |
| 5'' | 6.56 (d,8.0) | 114.9 | 6.49 (d,8.0) | 114.9 |
| 6'' | 6.33 (dd,8.1,1.9) | 120.7 | 6.26 (dd,8.0,1.9) | 120.1 |
| 7''α | 2.54 (dd,14.0,6.1) | 36.1 | 2.94 (ov) | 35.9 |
| 7''β | 2.45 (dd,14.0,6.6) | - | 2.78 (dd,16.0,8.0) | - |
| 8'' | 4.35 (t, 6.3) | 74.4 | 5.11 (t, 4.0) | 74.1 |
| 9'' | - | 171.0 | - | 171.1 |
| 10'' | - | 170.0 | - | 170.7 |
| 1''' | - | 127.7 | - | 127.7 |
| 2''' | 6.71 (d,1.9) | 116.4 | 6.70 (d,1.9) | 115.7 |
| 3''' | - | 144.8 | - | 145.0 |
| 4''' | - | 144.6 | - | 144.3 |
| 5''' | 6.64 (d, 8.0) | 114.9 | 6.65 (d, 8.0) | 114.8 |
| 6''' | 6.57 (dd, 8.0, 1.9) | 120.8 | 6.57 (dd, 8.0, 1.9) | 120.1 |
| 7'''α | 3.02 (dd,14.3,4.8) | 36.4 | 3.03 (dd,16.0,4.0) | 36.3 |
| 7'''β | 2.98 (dd,14.2,6.9) | - | 2.95 (ov) | - |
| 8''' | 5.11 (t, 6.7) | 73.3 | 5.11 (t, 4.0) | 73.2 |
| 9''' | - | 171.2 | - | 172.2 |
| 10''' | - | 166.7 | - | 166.4 |
| 11''' | 6. 25 (d,16.0) | 115.5 | 6. 15 (d,16.0) | 115.0 |
| 12''' | 7.53 (d, 16.0) | 142.4 | 7.46 (d, 16.0) | 141.9 |
δ in ppm; ov = overlapped.