Alkenylation and Arylation of Peptides via Ni-Catalyzed Reductive Coupling of α-<i>C</i>-Tosyl Peptides with Csp<sup>2</sup> Triflates/Halides
作者:Xianghua Tao、Guobin Ma、Yanhong Song、Yunrong Chen、Qun Qian、Deli Sun、Hegui Gong
DOI:10.1021/acs.orglett.1c02601
日期:2021.10.1
A Ni-catalyzed reductive cross-coupling between α-C-tosyl peptides and Csp2 triflates/halides has been developed. This protocol enables the formation of various unnatural di- and tripeptides containing vinyl and aryl side chains, and it expands the applications of Ni-catalyzed reductive cross-coupling in late-stage diversification of peptides.
已经开发了α-C-甲苯磺酰肽和 Csp 2三氟甲磺酸盐/卤化物之间的 Ni 催化还原交叉偶联。该协议能够形成各种含有乙烯基和芳基侧链的非天然二肽和三肽,并扩展了镍催化还原交叉偶联在肽后期多样化中的应用。
Studies on peptides. CXVII. Solution synthesis of the tetratetracontapeptide amide corresponding to the entire amino acid sequence of growth hormone releasing factor, somatocrinin.
The tetratetracontapeptide corresponding to the entire amino acid sequence of growth hormone releasing peptide derived from human pancreas islet tumor was synthesized by assembling eight peptide fragments in a conventional manner, followed by thioanisole-mediated deprotection with 1 M trifluoromethanesulfonic acid in TFA. Our synthetic peptide significantly stimulated the release of immunoreactive growth hormone in vivo.
N-Difluoromethyl-triazole as a constrained scaffold in peptidomimetics
作者:M. Mamone、R. S. B. Gonçalves、F. Blanchard、G. Bernadat、S. Ongeri、T. Milcent、B. Crousse
DOI:10.1039/c7cc01298e
日期:——
The N-difluoromethyl triazolo-β-aza-ε-amino acid present in the core of peptides led to constrained conformations due to CH–F and NH–F interactions.
核心肽中存在的N-二氟甲基三唑-β-氮杂-ε-氨基酸由于CH-F和NH-F的相互作用导致受限构象。
Hypocalcaemic peptides and processes for their manufacture
申请人:Ciba-Geigy Corporation
公开号:US03956260A1
公开(公告)日:1976-05-11
Synthetic hypocalcaemic dotriacontapeptide of the formula H-Cys-Ser-Asn-Leu-Ser--Thr-Cys-Val-Leu-Ser-Ala-Tyr-Try-Arg-Asn-Leu-Asn-Asn- Phe-His-Arg-Phe-Ser-Gly-Met-Gly-Phe-Gly-Pro-Glu-Thr-Pro-OH I and analogues and derivatives, salts and complexes thereof and process for their manufacture.
Aminopeptidase N (APN/CD13) is one of the essential proteins for tumour invasion, angiogenesis and metastasis as it is over-expressed on the surface of different tumour cells. Based on our previous work that L-isoserine dipeptide derivatives were potent APN inhibitors, we designed and synthesized L-isoserine tripeptide derivatives as APN inhibitors. Among these compounds, one compound 16l (IC50 = 2.51 +/- 0.2 +/- mu M) showed similar inhibitory effect compared with control compound Bestatin (IC50 = 6.25 +/- 0.4 mu M) and it could be used as novel lead compound for the APN inhibitors development as anticancer agents in the future.