Synthesis of methylated resveratrol and analogues by Heck reactions in organic and aqueous solvents
作者:Luis Botella、Carmen Nájera
DOI:10.1016/j.tet.2004.04.076
日期:2004.6
methodology for the synthesis of methoxylated (E)-stilbene derivatives. Couplings can be performed either with (dicyclohexyl)methylamine as base and TBAB in aqueous DMA or in neatwater and with Et3N as base in DMA in air and under thermal and microwave conditions. The arylation of different styrenes are performed with 3,5-dimethoxyiodobenzene to afford a series of important biologically active (E)-stilbene
An efficient palladium-catalyzed Negishi cross-coupling reaction with arylvinyl iodides: facile regioselective synthesis of E-stilbenes and their analogues
作者:M. Shahjahan Kabir、Aaron Monte、James M. Cook
DOI:10.1016/j.tetlet.2007.08.047
日期:2007.10
A general synthetic route for the Pd-catalyzed cross-coupling of an arylzinc reagent with arylvinyl iodides (Negishicross-coupling) has been developed. The system permits efficient and selective preparation of E-stilbenes and their analogues. It also functions effectively at low levels of catalyst loading without the need for an additional ligand and tolerates a wide range of functional groups including
3,5-Bis(trifluoromethyl)phenyl sulfones in the modified Julia olefination: application to the synthesis of resveratrol
作者:Diego A. Alonso、Carmen Nájera、Montserrat Varea
DOI:10.1016/j.tetlet.2003.10.196
日期:2004.1
and stereoselectivities the corresponding 1,2-disubstituted alkenes through the Julia–Kocienski olefination reaction. This one-pot protocol can be performed using KOH at room temperature or the phosphazene base P4-t-Bu at −78 °C, and has been successfully used in a high yielding and stereoselective synthesis of various stilbenes such as resveratrol.
The present invention provides compounds and methods of using of the compounds as anti-infective agents. In a preferred embodiment, the present invention provides wherein R
1
is not H when R
2
is H and R
2
is not H when R
1
is H, further wherein R
1
is CH
(2n+1)
O, wherein n is 1-10; wherein R
2
is OH or CH
(2n+1)
O, wherein n is 1-10; and wherein A, B and R
1
, R
2
, R
5
, R
6
, and R
7
are independently selected from a group consisting of H, alkyl and aryl groups and R
11
is an alkyl or an aryl group