Exploring the interest of 1,2-Dithiolane ring system in peptide chemistry. Synthesis of a chemotactic tripeptide and x-ray crystal structure of a 4-amino-1,2-dithiolane-4-carboxylic acid derivative
摘要:
Due to their relevant biological functions and specific chemical reactivity 1,2-dithiolanes (five-membered cyclic disulfides) represent an emerging class of heterocyclic compounds. However, despite the extensive research centered on lipoic acid and its analogues, only very few data are at the present available on peptides containing this ring system. We report here synthesis, conformation and bioactivity of a fMLF-OMe analogue, namely For-Met-Adt-Phe-OMe (7), in which the residue of the 4-amino-1,2-dithiolane-4-carboxylic acid (Adt) (4) replaces the central L-leucine. The crystal conformation of the synthetic intermediate Boc-Adt-OMe (5) is also described and compared to that of lipoic acid (R-1,2-dithiolane-3-pentanoic acid) (3) and asparagusic acid (1,2-dithiolane-4-carboxylic acid) (2). (C) 2001 Elsevier Science Ltd. All rights reserved.
Exploring the interest of 1,2-Dithiolane ring system in peptide chemistry. Synthesis of a chemotactic tripeptide and x-ray crystal structure of a 4-amino-1,2-dithiolane-4-carboxylic acid derivative
摘要:
Due to their relevant biological functions and specific chemical reactivity 1,2-dithiolanes (five-membered cyclic disulfides) represent an emerging class of heterocyclic compounds. However, despite the extensive research centered on lipoic acid and its analogues, only very few data are at the present available on peptides containing this ring system. We report here synthesis, conformation and bioactivity of a fMLF-OMe analogue, namely For-Met-Adt-Phe-OMe (7), in which the residue of the 4-amino-1,2-dithiolane-4-carboxylic acid (Adt) (4) replaces the central L-leucine. The crystal conformation of the synthetic intermediate Boc-Adt-OMe (5) is also described and compared to that of lipoic acid (R-1,2-dithiolane-3-pentanoic acid) (3) and asparagusic acid (1,2-dithiolane-4-carboxylic acid) (2). (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthetic and Electrochemical Studies of [2Fe2S] Complexes Containing a 4‐Amino‐1,2‐dithiolane‐4‐carboxylic Acid Moiety
作者:Ulf‐Peter Apfel、Christian R. Kowol、Enrico Morera、Helmar Görls、Gino Lucente、Bernhard K. Keppler、Wolfgang Weigand
DOI:10.1002/ejic.201000619
日期:2010.11
In the search for novel [FeFe] hydrogenase model systems several di- and tripeptides containing an 4-amino-1,2-dithiolane-4-carboxylic acid (Adt) moiety or N-phenylsulfonyl-Adt-OMe were treated with Fe 3 (CO)1 2. The resulting [FeFe] complexes were characterized by 1 H and 13 C NMR spectroscopy, mass spectrometry and elemental analysis. All complexes were investigated by cyclic voltammetry, and their
在寻找新的 [FeFe] 氢化酶模型系统时,一些含有 4-氨基-1,2-二硫戊环-4-羧酸 (Adt) 部分或 N-苯磺酰基-Adt-OMe 的二肽和三肽用 Fe 3 ( CO)1 2. 所得的 [FeFe] 配合物通过 1 H 和 13 C NMR 光谱、质谱和元素分析进行表征。通过循环伏安法研究了所有配合物,并在不同溶剂中研究了它们催化质子还原为二氢的能力,作为酸浓度的函数。