A general route for the stereoselective synthesis of (E)-(1-propenyl)phenyl esters by catalytic CC bond isomerization
A general and efficient procedure for the stereoselective synthesis of (E)-(1-propenyl)phenyl esters from readily accessible allylphenols has been developed. The process involves a two-step sequence consisting of the initial acylation of the allylphenols with an acid chloride, followed by catalytic CC bond isomerization in the resulting allylphenyl esters. The latter step was performed in methanol at 80 °C using catalytic amounts (0.5 mol %) of the commercially available bis(allyl)-ruthenium(IV) dimer [{RuCl(μ-Cl) (η3:η3-C10H16)} 2] (C10H16=2,7-dimethylocta-2,6-diene-1,8-diyl) . Reactions proceeded in high yields (68-93%) and short times (4-9 h) with complete E-selectivity.
Díaz-álvarez, Alba E.,Crochet, Pascale,Cadierno, Victorio
experimental part
p. 2611 - 2620
(2012/05/20)
Design, synthesis and SAR studies of 4-allyoxyaniline amides as potent 15-lipoxygensae inhibitors
A group of 4-allyloxyaniline amides 5a-o were designed, synthesized and evaluated as potential inhibitors of soybean 15-lipoxygenase (SLO) on the basis of eugenol and esteragol structures. Compound 5e showed the best IC50 in SLO inhibition (IC50 = 0.67 ± 0.06 μM). All compounds were docked in SLO active site retrieved from RCSB Protein Data Bank (PDB entry: 1IK3) and showed that allyloxy group of compounds is oriented towards the Fe3+-OH moiety in the active site of enzyme and fixed by hydrogen bonding with two conserved His513 and Gln716. It is resulted that molecular volume of the amide moiety would be a major factor in inhibitory potency variation of the synthetic amides, where the hydrogen bonding of the amide group could also involve in the activity of the inhibitors.
Seyedi, Seyed Mohammad,Jafari, Zeinab,Attaran, Neda,Sadeghian, Hamid,Saberi, Mohammad Reza,Riazi, Mohammad Mahdi
experimental part
p. 1614 - 1622
(2009/08/15)
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