Regioselective alkylation of substituted quinones by trialkylboranes
作者:Lothar W. Bieber、Pedro J. Rolim Neto、Regina M. Generino
DOI:10.1016/s0040-4039(99)00804-7
日期:1999.6
2-Methoxy-1,4-benzoquinone can be alkylated selectively with trialkylboranes in position 5, givinghigh yields of 5-alkyl-2-methoxy-1,4-benzoquinones after oxidative work up. In the case of 2-hydroxy-1,4-naphthoquinone, the same procedure leads to 3-alkylated products. A radical chain mechanism is proposed to explain the observed selectivity.
Synthesis and highly potent hypolipidemic activity of alpha-asarone- and fibrate-based 2-acyl and 2-alkyl phenols as HMG-CoA reductase inhibitors
作者:Aarón Mendieta、Fabiola Jiménez、Leticia Garduño-Siciliano、Angélica Mojica-Villegas、Blanca Rosales-Acosta、Lourdes Villa-Tanaca、Germán Chamorro-Cevallos、José L. Medina-Franco、Nathalie Meurice、Rsuini U. Gutiérrez、Luisa E. Montiel、María del Carmen Cruz、Joaquín Tamariz
DOI:10.1016/j.bmc.2014.09.022
日期:2014.11
In the search for new potential hypolipidemic agents, the present study focused on the synthesis of 2-acyl phenols (6a–c and 7a–c) and their saturated side-chain alkyl phenols (4a–c and 5a–c), and on the evaluation of their hypolipidemic activity using a murine Tyloxapol-induced hyperlipidemic protocol. The whole series of compounds 4–7 greatly and significantly reduced elevated serum levels of total