Solid-Support Based Total Synthesis and Stereochemical Correction of Brunsvicamide A
摘要:
A total synthesis of the cyanobacterial metabolite brunsvicamide A and the correction of its originally assigned stereochemistry are reported. Key elements were the construction of a urea building block, peptide elongation on solid phase, and on-resin cyclization of the peptide chain, with good overall yield. Detailed structural investigations uncovered that brunsvicamide A features a previously undetected D-lysine residue in its backbone, setting the foundation for all further investigations in this compound class.
Solid phase synthesis of Fmoc N-methyl amino acids: Application of the Fukuyama amine synthesis
摘要:
N-Methyl amino acids and their Fmoc derivatives are synthesized in high yield and purity on solid support using the Fukuyama amine synthesis protocol. (C) 1997 Elsevier Science Ltd.
Comparison of backbone modification in protein β-sheets by α→γ residue replacement and α-residue methylation
作者:George A. Lengyel、Zachary E. Reinert、Brian D. Griffith、W. Seth Horne
DOI:10.1039/c4ob00886c
日期:——
The mimicry of protein tertiary structure by oligomers with unnatural backbones is a significant contemporary research challenge. Among common elements of secondary structure found in natural proteins, sheets have proven the most difficult to address. Here, we report the systematic comparison of different strategies for peptide backbone modification in β-sheets with the goal of identifying the best method for replacing a multi-stranded sheet in a protein tertiary fold. The most effective sheet modifications examined led to native-like tertiary folding behavior with a thermodynamic folded stability comparable to the prototype protein on which the modified backbones are based.
[EN] FLUORESCENTLY LABELED MOLECULES CONTAINING MODIFIED TRYPTOPHAN<br/>[FR] MOLÉCULES MARQUÉES PAR FLUORESCENCE CONTENANT DU TRYPTOPHANE MODIFIÉ
申请人:SEED RES AND DEV LLC
公开号:WO2016133913A1
公开(公告)日:2016-08-25
The present disclosure relates to new fluorescent molecules that contain N-alkylated or N-acylated tryptophan and do not substantially quench fluorescent labels attached to the molecules, and the use of such molecules in preparing and studying various compounds, such as substrates and inhibitors for assays of enzymes (e.g., caspases, such as caspase-1 which is an important enzyme in inflammation). An enzyme substrate or enzyme inhibitor that contains a modified tryptophan and fluorescent label as disclosed herein can be studied without loss of signal by Förster quenching. By reducing or eliminating this quenching, more useful labeled molecules with improved properties for assay development can be prepared.
NEUROPEPTIDE ANALOGS, COMPOSITIONS, AND METHODS FOR TREATING PAIN
申请人:NeuroAdjuvants, Inc.
公开号:US20170020951A1
公开(公告)日:2017-01-26
Neuropeptide analogs and compositions including neuropeptide analogs are described herein. Also provided are methods of producing and using the neuropeptide analogs and compositions including one or more neuropeptide analogs.
MACROCYCLIC COMPOUNDS FOR INHIBITION OF TUMOR NECROSIS FACTOR ALPHA
申请人:Lee Jinbo
公开号:US20100152099A1
公开(公告)日:2010-06-17
The invention provides macrocyclic compounds and methods for their synthesis and use. In particular, the invention provides macrocyclic compounds that modulate the activity of tumor necrosis factor alpha and/or are useful in the treatment of medical conditions, such as, rheumatoid arthritis, psoriasis, and asthma.
Neuropeptide analogs, compositions, and methods for treating pain
申请人:NeuroAdjuvants, Inc.
公开号:US10172909B2
公开(公告)日:2019-01-08
Neuropeptide analogs and compositions including neuropeptide analogs are described herein. Also provided are methods of producing and using the neuropeptide analogs and compositions including one or more neuropeptide analogs.