Mizoroki–Heck Reaction of Unstrained Aryl Ketones via Ligand-Promoted C–C Bond Olefination
作者:Mei-Ling Wang、Hui Xu、Han-Yuan Li、Biao Ma、Zhen-Yu Wang、Xing Wang、Hui-Xiong Dai
DOI:10.1021/acs.orglett.1c00296
日期:2021.3.19
Mizoroki–Heck reaction of unstrained arylketone with acrylate/styrene is accomplished via palladium-catalyzed ligand-promoted C–C bond cleavage. Various (hetero)arylketones are compatible in the reaction, affording the alkene product in good to excellent yields. Further applications in the late-stage olefination of some drugs, natural products, and fragrance-derived arylketones demonstrate the synthetic utility
Arylketones as Aryl Donors in Palladium-Catalyzed Suzuki–Miyaura Couplings
作者:Zhen-Yu Wang、Biao Ma、Hui Xu、Xing Wang、Xu Zhang、Hui-Xiong Dai
DOI:10.1021/acs.orglett.1c03048
日期:2021.11.5
Herein, we report the arylation, alkylation, and alkenylation of aryl ketones via a palladium-catalyzed Suzuki–Miyaura cross-coupling reaction. The use of the pyridine-oxazoline ligand is the key to the cleavage of the unstrained C–C bond. The late-stage arylation of aryl ketones derived from drugs and natural products demonstrated the synthetic utility of this protocol.
Aza-retinoids as novel retinoid X receptor-specific agonists
作者:Luc J. Farmer、Kristen S. Marron、Stacie S. Canan Koch、C.K. Hwang、E Adam Kallel、Lin Zhi、Alex M. Nadzan、Dave W. Robertson、Youssef L. Bennani
DOI:10.1016/j.bmcl.2005.12.003
日期:2006.5
A new structurally simple series of potent lipophilic aza-retinoids RXR agonists has been developed. SAR studies for the N-alkyl-azadienoic acids described here demonstrate that the RXR activity profile is sensitive to the N-alkyl chain length. Further, we have expanded the work to include azadienoic acids, which exhibited many accessible conformations leading to a better understanding of the SAR around