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Synthesis and compositions of 15 and 16a–e.
| Product | mg 9 | mg 13 (equiv) | mg 10 (equiv) | Yield, mg (%) | MALDI-TOF |
|---|---|---|---|---|---|
| 15 | 10 | 0 | 15 (15) | 16 (88) | Figure S12 |
| 16a | 20 | 8 (1) | 0 | 22 (76) | Figure S13 |
| 16b | 20 | 16 (2) | 0 | 29 (78) | Figure S14 |
| 16c | 20 | 8 (1) | 15 (7) | 31 (76) | Figure S15 |
| 16d | 20 | 16 (2) | 12 (6) | 19 (41) | Figure S16 |
| 16e | 10 | 16 (4) | 4 (4) | 22 (76) | Figure S17 |
