中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
Fmoc-L-4-羟基脯氨酸 | N-Fmoc-trans-4-Hydroxy-L-Proline | 88050-17-3 | C20H19NO5 | 353.375 |
氯甲酸-9-芴基甲酯 | (fluorenylmethoxy)carbonyl chloride | 28920-43-6 | C15H11ClO2 | 258.704 |
9-芴甲基-N-琥珀酰亚胺基碳酸酯 | N-(9H-fluoren-2-ylmethoxycarbonyloxy)succinimide | 82911-69-1 | C19H15NO5 | 337.332 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | N-(9-fluorenylmethoxycarbonyl)-(2S,4S)-4-tert-butoxyproline | —— | C24H27NO5 | 409.482 |
—— | (2S,4R)-N-Fmoc-4-fluoropyrrolidine-2-carbonyl fluoride | 1235447-41-2 | C20H17F2NO3 | 357.357 |
Substituents at Cγ of proline are valuable probes to tune the trans/cis ratio of Xaa–Pro bonds. We investigated the effect of Cγ-substituents on the reactivity and stereoselectivity of the peptidic catalyst H-dPro-Pro-Glu-NH2. Derivatives that bear electron-withdrawing and -donating substituents (OH, F, N3, and SMe) at Cγ of the middle Pro-residue were examined. The results show that substituents at a 4R-configured Cγ hardly affect the stereoselectivity of the peptidic catalyst whereas substituents at a 4S-configured Cγ can be used to tune and improve the catalytic performance.