Formal Synthesis of Belactosin A and Hormaomycin via a Diastereoselective Intramolecular Cyclopropanation of an α-Nitro Diazoester
作者:Sébastien F. Vanier、Guillaume Larouche、Ryan P. Wurz、André B. Charette
DOI:10.1021/ol9026528
日期:2010.2.19
An efficient and convenient methodology for the synthesis of the 3-(trans-2-aminocyclopropyl) alanine and 3-(trans-2-nitrocyclopropyl) alanine moieties found in the core of belactosin A and hormaomycin, respectively, is reported. By using an enantioenriched substituted α-nitro diazoester in a diastereoselective intramolecular cyclopropanation reaction, the trans-nitrocyclopropyl alanine moiety can
[EN] COMPOUNDS THAT INHIBIT MCL-1 PROTEIN<br/>[FR] COMPOSÉS INHIBANT LA PROTÉINE MCL-1
申请人:AMGEN INC
公开号:WO2017147410A1
公开(公告)日:2017-08-31
Provided herein are myeloid cell leukemia 1 protein (Mcl-1) inhibitors, methods of their preparation, related pharmaceutical compositions, and methods of using the same. For example, provided herein are compounds of Formula I, and pharmaceutically acceptable salts thereof and pharmaceutical compositions containing the compounds. The compounds and compositions provided herein may be used, for example, in the treatment of diseases or conditions, such as cancer.
Catalytic Hydroxycyclopropanol Ring-Opening Carbonylative Lactonization to Fused Bicyclic Lactones
作者:Xinpei Cai、Weida Liang、Mingxin Liu、Xiating Li、Mingji Dai
DOI:10.1021/jacs.0c06179
日期:2020.8.12
A novel palladium-catalyzed ring opening carbonylative lactonization of readily available hydroxycyclopropanols was developed to efficiently synthesize tetrahydrofuran (THF) or tetrahydropyran (THP)-fused bicyclic γ-lactones, two privileged scaffolds often found in natural products. The reaction features mild reaction conditions, good functional group tolerability, and scalability. Its application
Scandium-Catalyzed Allylboration of Aldehydes as a Practical Method for Highly Diastereo- and Enantioselective Construction of Homoallylic Alcohols
作者:Hugo Lachance、Xiaosong Lu、Michel Gravel、Dennis G. Hall
DOI:10.1021/ja036807j
日期:2003.8.1
A general approach for the allylation of aldehydes using stable, air-tolerant camphor-based chiralallylboronates under Sc(OTf)3 catalysis is described. This practical methodology provides both syn and anti propionate units and other homoallylic alcohols with very high levels of diastereo- and enantioselectivity for several substrates, including functionalized aliphatic aldehydes useful toward the