Table 5. Z-Selective ethenolysis on stapled peptides bearing i, i + 4 and i, i + 7 crosslinks.
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Entry | Compound | Initial E : Z a | Final E : Z a | Conversion a % |
1 | 26 | 72 : 28 | 95 : 5 | 86% |
2 | 27 | 83 : 17 | 93 : 7 | 65% |
3 | 28 | 71 : 29 | 96 : 4 | 91% |
4 | 29 | 79 : 21 | 94 : 6 | 78% |
5 | 30 | 64 : 36 | 98 : 2 | 83% |
6 | 31 | 81 : 19 | 98 : 2 | 93% |
aDetermined by analytical HPLC/MS of cleaved peptide.