Table 1 1H-NMR chemical shift of methyl pheophorbide A (600 MHz, CDCl3)
Position | Compound (ppm) |
|---|---|
21-H (CH3) | 3.402 (s) |
31-H | 7.98 (dd, J = 11.6, 18) |
32-H (H trans) | 6.29 (dd, J = 1.2, 18) |
32-H (H cis) | 6.18 (dd, J = 1.2, 11.6) |
5-H | 9.386 (s) |
71-H (CH3) | 3.233 (s) |
81-H (CH2) | 3.659 (q, J = 7.6) |
82-H (CH3) | 1.698 (t, J = 7.6) |
10-H | 9.522 (s) |
121-H (CH3) | 3.687 (s) |
132-H | 6.251 (s) |
135-H (CH3) | 3.875 (s) |
17-H | 4.230 (dd, J = 2.4, 9.6) |
171-H (CHH) | 2.614 (m), 2.457 (m) |
172-H (CHH) | 2.412 (m), 2.213 (m) |
175-H (CH3) | 3.570(s) |
18-H | 4.452 (q, J = 7.2) |
181-H (CH3) | 1.809 (d, J = 6.8) |
20-H | 8.559 (s) |
21, 23-NH | − 1.65 |