作者:Vemula Praveen Kumar、Vaddela Sudheer Babu、Kenzo Yahata、Yoshito Kishi
DOI:10.1021/acs.orglett.7b01128
日期:2017.5.19
Fe/Cu-mediated one-pot ketonesynthesis was reported. Unlike Ni- and Pd-mediated one-pot ketone syntheses, the reported Fe/Cu-mediated method allowed selective activation and coupling of alkyl iodides over vinyl iodides. The newly developed one-pot ketonesynthesis was applied to a synthesis of vinyl iodide/ketone 13, the left half of halichondrin B, as well as vinyl iodide/ketone 8a, the C20–C26 building
[EN] FE/CU-MEDIATED KETONE SYNTHESIS<br/>[FR] SYNTHÈSE DE CÉTONE MÉDIÉE PAR FE/CU
申请人:HARVARD COLLEGE
公开号:WO2019009956A1
公开(公告)日:2019-01-10
Provided herein are methods for preparing ketone-containing organic molecules. The methods are based on novel iron/copper-mediated ("Fe/Cu-mediated") coupling reactions. The Fe/Cu-mediated coupling reaction can be used in the preparation of complex molecules, such as halichondrins and analogs thereof. In particular, the Fe/Cu-mediated ketolization reactions described herein are useful in the preparation of intermediates en route to halichondrins.
Inhibitors of hepatitis C virus RNA-dependent RNA polymerase, and compositions and treatments using the same
申请人:Borchardt Allen
公开号:US20050176701A1
公开(公告)日:2005-08-11
The invention relates to compounds of the formula 1
and to pharmaceutically acceptable salts, solvates, prodrugs and metabolites thereof, wherein W, Z, R
1
and R
2
, are as defined herein. The invention also relates to methods of treating Hepatitis C virus in mammals by administering the compounds of formula 1, and to pharmaceutical compositions for treating such disorders, which contain the compounds of formula 1. The invention also relates to methods of preparing the compounds of formula 1.
[EN] KETONE SYNTHESIS AND APPLICATIONS<br/>[FR] SYNTHÈSE ET UTILISATIONS DE CÉTONE
申请人:HARVARD COLLEGE
公开号:WO2022019921A1
公开(公告)日:2022-01-27
Provided are new nickel./zirconium-mediated coupling reactions useful in the synthesis of ketone-containing compounds, e.g., halichondrin natural products and related molecules. A feature of the present disclosure is the use of a nickel(I) catalyst in tandem with a nickel (II) catalyst in the Ni/Zr-mediated coupling reactions. Without wishing to be bound by any particular theory, the nickel (I) catalyst selectively activates the electrophilic coupling partner (i.e., the compound of Formula (A)), and the nickel(ll) catalyst selectively activates the nucleophilic coupling partner (i.e., a thioester of Formula (B)). This dual catalyst system leads to improved coupling efficiency and eliminates the need for a large excess of one of the coupling partners (i.e., a compound of Formula (A) or (B)).
INHIBITORS OF HEPATITIS C VIRUS RNA-DEPENDENT RNA POLYMERASE, AND COMPOSITIONS AND TREATMENTS USING THE SAME
申请人:Borchardt Allen
公开号:US20060189681A1
公开(公告)日:2006-08-24
The invention relates to compounds of the formula 1
and to pharmaceutically acceptable salts, solvates, prodrugs and metabolites thereof, wherein W, Z, R
1
and R
2
, are as defined herein. The invention also relates to methods of treating Hepatitis C virus in mammals by administering the compounds of formula 1, and to pharmaceutical compositions for treating such disorders, which contain the compounds of formula 1. The invention also relates to methods of preparing the compounds of formula 1.