Structural and Initial Biological Analysis of Synthetic Arylomycin A<sub>2</sub>
作者:Tucker C. Roberts、Peter A. Smith、Ryan T. Cirz、Floyd E. Romesberg
DOI:10.1021/ja073340u
日期:2007.12.1
inhibitors of the essential type Ibacterialsignalpeptidase (SPase) may be more specific and thus less toxic due to the enzyme's unique structure and catalytic mechanism. Recently, the arylomycins and related lipoglycopeptide natural products were isolated and shown to inhibit SPase. The core structure of the arylomycins and lipoglycopeptides consists of a biaryl-linked, N-methylated peptide macrocycle
Arylomycin analogs are provided, wherein the analogs can have broad spectrum bioactivity. Resistance to the antibiotic bioactivity of natural product arylomycin in a range of pathogenic bacterial species has been found to depend upon single amino acid mutations at defined positions of bacterial Signal Peptidases (SPases), wherein the presence of a proline residue confers arylomycin resistance. Arylomycin analogs are provided herein that can overcome that resistance and provide for a broader spectrum of antibiotic bioactivity than can natural product arylomycins such as arylomycin A2. Methods for determining if a bacterial strain is susceptible to narrow spectrum arylomycin antibiotics, or if a broad spectrum analog is required for treatment, is provided. Pharmaceutical compositions and methods of treatment of bacterial infections, and methods of synthesis of arylomycin analogs, are provided.
[EN] ALPHA HELIX MIMETICS AND METHODS RELATING THERETO<br/>[FR] MIMÉTIQUES D'HÉLICE ALPHA ET PROCÉDÉS S'Y RAPPORTANT
申请人:PRISM BIOLAB CORP
公开号:WO2012115286A1
公开(公告)日:2012-08-30
Alpha-helix mimetic structures and compounds represented by the formula (I) wherein the general formula and the definition of each symbol are as defined in the specification, a compound relating thereto, and methods relating thereto, are disclosed. Applications of these compounds in the treatment of medical conditions, e.g., cancer diseases, fibrotic diseases, and pharmaceutical compositions comprising the mimetics are further disclosed.
Intramolecular Suzuki-Miyaura Reaction for the Total Synthesis of Signal Peptidase Inhibitors, Arylomycins A2 and B2
作者:Jeremy Dufour、Luc Neuville、Jieping Zhu
DOI:10.1002/chem.201000924
日期:2010.9.10
Development of the total syntheses of arylomycins A1 and B2 is detailed. Key features of our approach include 1) formation of 14‐membered meta,meta‐cyclophane by an intramolecularSuzuki–Miyaurareaction; 2) incorporation of N‐Me‐4‐hydroxyphenylglycine into the cyclization precursor, which avoids the late‐stage low‐yielding N‐methylation step; 3) segment coupling of a fully elaborated peptide side
详细介绍了arylomycins A 1和B 2的总合成过程。我们方法的主要特征包括:1)通过分子内Suzuki-Miyaura反应形成14元间位,间环烷;2)将N -Me-4-羟基苯甘氨酸掺入环化前体中,避免了后期的低产N-甲基化步骤;3)将完整加工的肽侧链与大环段偶联,从而使合成高度收敛。总体而言,芳基霉素A 2以最长的线性序列从L- Tyr以13个步骤获得,总产率为13%。阿霉素B 2从L -3-硝基Tyr分十步合成,总收率为10%。
Structural and Functional Analysis of Bacterial Sulfonosphingolipids and Rosette‐Inducing Factor 2 (RIF‐2) by Mass Spectrometry‐Guided Isolation and Total Synthesis
作者:Daniel Leichnitz、Chia‐Chi Peng、Luka Raguž、Florentine U. N. Rutaganira、Theresa Jautzus、Lars Regestein、Nicole King、Christine Beemelmanns
DOI:10.1002/chem.202103883
日期:2022.2.7
Similarities across species: MS-guided isolation and the first totalsynthesis of bacterialsulfonosphingolipids allowed bioactivity studies on their rosette-inducing and inhibiting capabilities in Salpingoeca rosetta. The most abundant sulfonosphingolipids inhibited rosetteinducing factor-related activity in a concentration-dependent manner thus suggesting that sulfobacins are likely competing for