Reductive routes to rigid peptide building blocks: The dependence of a regioselective imide reduction on the nature of an α-alkoxy substituent
作者:Kevin D. Moeller、Cathleen E. Hanau
DOI:10.1016/s0040-4039(00)60001-1
日期:1992.10
The reduction of several N-acylpyrrolidinones has been studied. The regioselectivity of the reductions was found to depend on the nature of the N-acyl group. In one example, the use of a sterically bulky triisopropylsiloxy substituent alpha to the N-acyl carbonyl led to exclusive reduction of the pyrrolidinone carbonyl and the formation of a product that could be used in the synthesis of the 1-azabicyclo[5.3.0]decane ring skeleton found in a key bicyclic Pro-Phe building block.
Identification of Small‐Molecule Modulators of Diguanylate Cyclase by FRET‐Based High‐Throughput Screening
作者:Matthias Christen、Cassandra Kamischke、Hemantha D. Kulasekara、Kathleen C. Olivas、Bridget R. Kulasekara、Beat Christen、Toni Kline、Samuel I. Miller
DOI:10.1002/cbic.201800593
日期:2019.2
formation that is part of chronic infections. We present a FRET-based biochemical high-throughput screening approach coupled with detailed structure-activity studies to identify synthetic small-molecule modulators of the diguanylate cyclase DgcA from Caulobacter crescentus. We identified a set of seven smallmolecules that regulate DgcA enzymatic activity in the low-micromolar range. Subsequent structure-activity
Iterative Assembly of Macrocyclic Lactones using Successive Ring Expansion Reactions
作者:Thomas C. Stephens、Aggie Lawer、Thomas French、William P. Unsworth
DOI:10.1002/chem.201803064
日期:2018.9.18
Macrocyclic lactones can be prepared from lactams and hydroxyacid derivatives via an efficient 3‐ or 4‐atom iterative ringexpansion protocol. The products can also be expanded using amino acid‐based linear fragments, meaning that macrocycles with precise sequences of hydroxy‐ and amino acids can be assembled in high yields by “growing” them from smaller rings, using a simple procedure in which high