palladium-catalyzed construction of ketones via Suzuki-Miyaura reaction using acid fluorides is described. In contrast to typical acyl electrophiles such as acid chlorides, acid fluorides are uncommon acyl electrophiles to use in boron-based coupling probably due to a high level of stability toward nucleophiles. This first attempt to use acid fluorides as a coupling partner with boronic acid allowed highly
作者:Sundaramoorthi Rajeswari、Akinbo A. Adesomoju、Michael P. Cava
DOI:10.1002/jhet.5570260307
日期:1989.5
Preparation of two newanalogs 5 and 6 of the antitumor antibiotic CC-1065 1 are described. These compounds represent structural modifications of the active analogs 3 and 2 respectively, in which the dienone A-unit has been replaced by the tricyclic achiral gramine unit 4. Modest cytotoxicity was exhibited by compounds 5 and 6.