Development of a Multi Kilogram-Scale, Tandem Cyclopropanation Ring-Expansion Reaction en Route to Hedgehog Antagonist IPI-926
作者:Brian C. Austad、Andrew B. Hague、Priscilla White、Stéphane Peluso、Somarajan J. Nair、Kristopher M. Depew、Michael J. Grogan、André B. Charette、Lin-Chen Yu、Caroline D. Lory、Louis Grenier、André Lescarbeau、Benjamin S. Lane、Richard Lombardy、Mark L. Behnke、Nii Koney、James R. Porter、Matthew J. Campbell、Jeanne Shaffer、Jimin Xiong、Joseph C. Helble、Michael A. Foley、Julian Adams、Alfredo C. Castro、Martin R. Tremblay
DOI:10.1021/acs.oprd.6b00048
日期:2016.4.15
cyclopropanation reactions, we developed new iodomethylzinc bis(aryl)phosphate reagents that were found to be both effective and safe. These soluble reagents can be prepared under mild conditions and are stable during the course of the reaction. Importantly, they have favorable energetics relative to other cyclopropanatingagents such as EtZnCH2I. Herein, we describe the process optimization studies that led