Table 2.
| |||||
---|---|---|---|---|---|
Entry | R1 | Y | X | Obtained MW | Yield (%)a |
5a | -NBoc- | -NH- | 345 (MH+) | 80 | |
5b | -CH2- | -CH2- | 336 (MH+) | 82 | |
5c | -CH2- | -CH2- | 310 (MH+) | 78 | |
5d | -CH2- | -CH2- | 367 (MH+) | 70 |
Yields based on the weight of purified product and are relative to the initial loading of the resin. The purity of the purified compounds is higher than 95% for all the compounds. The purity was estimated on analytical traces at λ= 214 nm and 254 nm.