Improved Protein Kinase C Affinity through Final Step Diversification of a Simplified Salicylate-Derived Bryostatin Analog Scaffold
摘要:
Bryostatin 1 an clinical trials or preclinical development for cancer, Alzheimer disease, and a first of-its-kind strategy for HIV/AIDS eradication, is neither readily available nor optimally suited for clinical use. In preceding work, we disclosed a new class of simplified bryostatin analogs designed for ease of access and tunable activity. Here we describe a final step diversification strategy that provides in only 25 synthetic steps, simplified and tunable analogs with bryostatin like PKC modulatory activities.
Pd(II)-catalyzed bromo- and chlorodecarboxylation of electron-rich arenecarboxylic acids
摘要:
A bromo- and chlorodecarboxylation of various aromatic carboxylic acids catalyzed by Pd(II) has been developed in this work. A series of electron-rich arenecarboxylic acids gave the corresponding decarboxylative monohalogenation products under the typical reaction conditions. (C) 2013 Elsevier Ltd. All rights reserved.
Enantioselective Synthesis of Atropisomeric Biaryls using Biaryl 2,5‐Diphenylphospholanes as Ligands for Palladium‐Catalysed Suzuki‐Miyaura Reactions
作者:Liam Byrne、Christian Sköld、Per‐Ola Norrby、Rachel H. Munday、Andrew R. Turner、Peter D. Smith
DOI:10.1002/adsc.202001211
日期:2021.1.5
describe the development of biaryl2,5‐diphenylphospholanes as a new class of C2‐symmetric, monodentate ligands for asymmetric Suzuki‐Miyaura (ASM) reactions. Screening of a series of exemplary phospholanes led to the identification of two ligands that were used to prepare a range of atropisomericbiaryl and heterobiaryl products with good to excellent levels of enantioselectivity (up to 97:3 e.r.) under