Total synthesis of (±)-fumimycin and analogues for biological evaluation as peptide deformylase inhibitors
作者:Mehdi Zaghouani、Lena A.K. Bögeholz、Evan Mercier、Wolfgang Wintermeyer、Stéphane P. Roche
DOI:10.1016/j.tet.2019.03.037
日期:2019.6
A concise 7-step total synthesis of (±)-fumimycin in 11.6% overall yield is reported. An acid-catalyzed intramolecular aza-Friedel–Crafts cyclization was developed to construct the benzofuranone skeleton of the natural product bearing an α,α-disubstituted amino acid moiety in a single step. Regioselective chlorination followed by a Suzuki–Miyaura cross-coupling rapidly enabled the preparation of a
Synthesis of fluorinated amphoteric organoborons <i>via</i> iodofluorination of alkynyl and alkenyl MIDA boronates
作者:Wen-Xin Fan、Ji-Lin Li、Wen-Xin Lv、Ling Yang、Qingjiang Li、Honggen Wang
DOI:10.1039/c9cc08386c
日期:——
The iodofluorination of alkynyl and alkenyl MIDA (N-methyliminodiacetyl) boronates led to the synthesis of two types of fluorinated organoborons bearing a valuable C–I bond. The B(MIDA) moiety confers exclusive regioselectivity to the reaction, and the products were formed in generally good yields. Preliminary utility of the products was demonstrated.
Site-Differentiated Polyboron Arenes Prepared by Direct CH Borylation and Their Highly Selective Suzuki-Miyaura Cross-Coupling Reactions
作者:Liang Xu、Siyi Ding、Pengfei Li
DOI:10.1002/anie.201309546
日期:2014.2.10
boronyl (Bpin), were prepared by an iridium‐catalyzed direct CHborylation of readily available (hetero)aryl MIDA boronates. The excellent synthetic uses of these multisite nucleophiles were demonstrated by the high‐yield production of a variety of multifunctionalized poly(hetero)arenes with the highly chemoselective Suzuki–Miyauracoupling (SMC) of the Bpin moiety being an essential step.
Synthesis of α-Borylated Ketones by Regioselective Wacker Oxidation of Alkenylboronates
作者:Victoria B. Corless、Aleksandra Holownia、Hayden Foy、Rodrigo Mendoza-Sanchez、Shinya Adachi、Travis Dudding、Andrei K. Yudin
DOI:10.1021/acs.orglett.8b02234
日期:2018.9.7
As part of a program aimed at metal-catalyzed oxidative transformations of molecules with carbon–metalloid bonds, the synthesis of α-borylated ketones is reported via regioselective TBHP-mediated Wacker-type oxidation of N-methyliminodiacetic acid (MIDA)-protected alkenylboronates. The observed regioselectivity correlates with the hemilabile nature of the B–N dative bond in the MIDA boronate functional
Modular Access to Triarylethylene Units from Arylvinyl MIDA Boronates Using a Regioselective Heck Coupling
作者:R. N. Khanizeman、E. Barde、R. W. Bates、A. Guérinot、J. Cossy
DOI:10.1021/acs.orglett.7b02218
日期:2017.10.6
A palladium-catalyzed, silver-mediated Heck coupling between arylvinyl MIDA boronate esters and aryliodides is disclosed. The reaction provides an efficient and modular access to a range of 1,1-diaryl alkenyl MIDA boronates that can be easily transformed into triarylethylene compounds through a Suzukicoupling.