19653-58-8Relevant articles and documents
Single Electron Transfer-Induced Selective α-Oxygenation of Glycine Derivatives
Venugopal, Navyasree,Moser, Johannes,Vojtí?ková, Margaréta,Císa?ová, Ivana,K?nig, Burkhard,Jahn, Ullrich
supporting information, p. 405 - 412 (2021/11/03)
Modification of amino acids is an important strategy in organic and bioorganic chemistry. In contrast to common side-chain functionalization, backbone modification is much less explored. Especially glycine units seem to be attractive and versatile since a wide range of functionality can be potentially introduced. We report here oxidative modification of glycinates that are stable and enable further functionalization. Selective glycinate enolate oxidation by TEMPO or a FeCp2PF6/TEMPO reagent combination provides stable alkoxyamines in good to excellent yields. The methodology is expanded to glycine-containing dipeptides demonstrating selective oxygenation at the glycine unit. The orthogonal reactivity potential of oxygenated glycines for transformation to other amino acid derivatives is explored.
2-Oxoamide inhibitors of phospholipase A2 activity and cellular arachidonate release based on dipeptides and pseudodipeptides
Barbayianni, Efrosini,Stephens, Daren,Grkovich, Andrej,Magrioti, Victoria,Hsu, Yuan-Hao,Dolatzas, Panagiotis,Kalogiannidis, Dimitrios,Dennis, Edward A.,Kokotos, George
experimental part, p. 4833 - 4843 (2009/12/04)
A series of 2-oxoamides based on dipeptides and pseudodipeptides were synthesized and their activities towards two human intracellular phospholipases A2 (GIVA cPLA2 and GVIA iPLA2) and one human secretory phospholipase As
4-Methoxy-2,3,6-trimethylbenzenesulfonyl (Mtr): a New Amino and Imidazole Protecting Group in Peptide Synthesis
Wakimasu, Mitsuhiro,Kitada, Chieko,Fujino, Masahiko
, p. 2766 - 2779 (2007/10/02)
The 4-methoxy-2,3,6-trimethylbenzenesulfonyl (Mtr) group was introduced as a protecting group for the amino function, especially the ε-amino function of lysine, and the imidazole ring of histidine.The Nε-Mtr group was removable by dilute methanesulfonic acid-containing trifluoroacetic acid-thioanisole, but was stable to trifluoroacetic acid or catalytic hydrogenation.The Nim-Mtr group was removable by trifluoroacetic acid-dimethylsulfide or 1-hydroxybenzotriazole, but was more stable than the Nim-Tos or the Nim-Mbs group with triethylamine.To examine the usefulness of the Mtr group as a protecting group for use in peptide synthesis, mastoparan X and chicken gastrin releasing peptide (c-GRP) were synthesized, and this group was found to be very convenient for general solution synthesis.In particular, the introduction of Lys(Mtr) made possible a new strategy in peptide synthesis.Keywords-4-methoxy-2,3,6-trimethylbenzenesulfonyl (Mtr); Nε-4-methoxy-2,3,6-trimethylbenzenesulfonyllysine; Nim-4-methoxy-2,3,6-trimethylbenzenesulfonylhistidine; methanesulfonic acid-trifluoroacetic acid-thioanisole deprotection; trifluoroacetic acid-dimethylsulfide deprotection; mastoparan X; chicken gastrin releasing peptide