| Entry | Anion of AAIL | Reagent, additive | Yield¼a (%) | Yieldb (%) |
|---|---|---|---|---|
| 10l | [Boc-Ala] | EDC, HOBt, DIEA | 0 | 0 |
| 11m | [Boc-Ala] | HATU, HOBt, DIEA | 70 | 71 |
| 12n | [Boc-Ala] | PyBOP, DIEA | 35 | 35 |
| 13o | [Boc-Ala] | CTPA | 26 | 72 |
| 14p | [Boc-Ala] | CTPA | 64 | 77 |
| 15q | [Boc-Ala] | CTPA | 95 | 95 |
| 16q | [Boc-Gly] | CTPA | 93 | — |
| 17q | [Boc-Val] | CTPA | 95 | — |
| 18q | [Boc-Leu] | CTPA | 94 | — |
| 19q | [Boc-Ile] | CTPA | 96 | — |
| 20q | [Boc-Phe] | CTPA | 92 | — |
| 21q | [Boc-Trp(For)] | CTPA | 92 | — |
| 22q | [Boc-Tyr(Bn)] | CTPA | 93 | — |
| 23q | [Boc-Asp(Bn)] | CTPA | 89 | — |
| 24q | [Boc-His(Ts)] | CTPA | 90 | — |
| 25q | [Boc-Asn] | CTPA | 10 | — |
| 26q | [Boc-Asn(Trt)] | CTPA | 86 | — |
| 27q | [Boc-Glu(Bn)] | CTPA | 93 | — |
| 28q | [Boc-Lys(Z)] | CTPA | 91 | — |
| 29q | [Boc-Gln] | CTPA | 90 | — |
| 30q | [Boc-Met] | CTPA | 93 | — |
| 31q | [Boc-Arg(Ts)] | CTPA | 89 | — |
| 32q | [Boc-Ser(Bn)] | CTPA | 92 | — |
| 33q | [Boc-Thr(Bn)] | CTPA | 89 | — |
| 34q | [Boc-Cys(Meb)] | CTPA | 91 | — |
| 35q | [Boc-Pro] | CTPA | 89 | — |
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