58556-55-1Relevant articles and documents
Chemoenzymatic synthesis and radical scavenging of sulfated hydroxytyrosol, tyrosol, and acetylated derivatives
Begines, Paloma,Biedermann, David,Valentova, Katerina,Petraskova, Lucie,Pelantova, Helena,Maya, Ines,Fernandez-Bola?os, Jose G.,Krěn, Vladimír
, p. 7281 - 7288 (2019)
Potential metabolites of bioactive compounds are important for their biological activities and as authentic standards for metabolic studies. The phenolic compounds contained in olive oil are an important part of the human diet, and therefore their potenti
Optimization of lipase-catalyzed synthesis of acetylated tyrosol by response surface methodology
Aissa, Imen,Bouaziz, Mohamed,Ghamgui, Hanen,Kamoun, Amel,Miled, Nabil,Sayadi, Sami,Gargouri, Youssef
, p. 10298 - 10305 (2007)
The ability of a noncommercial immobilized lipase from Staphylococcus xylosus (SXLi) to catalyze the transesterification of tyrosol and ethyl acetate was investigated. Response surface methodology was used to evaluate the effects of the tempera
Chemoenzymatic synthesis of hydroxytyrosol monoesters and their suppression effect on nitric oxide production stimulated by lipopolysaccharides
Sakakura, Ayaka,Pauze, Martin,Namiki, Atsuhiro,Funakoshi-Tago, Megumi,Tamura, Hiroomi,Hanaya, Kengo,Higashibayashi, Shuhei,Sugai, Takeshi
, p. 185 - 191 (2019/02/05)
Fatty acid monoesters of hydroxytyrosol [2-(3,4-dihydroxyphenyl)ethanol] were synthesized in two steps from tyrosol (4-hydroxyphenylethanol) by successive Candida antarctica lipase B-catalyzed chemoselective acylation on the primary aliphatic hydroxy group over phenolic hydroxy group in tyrosol, and 2-iodoxybenzoic acid (IBX)-mediated hydroxylation adjacent to the remaining free phenolic hydroxy group. Examination of their suppression effects on nitric oxide production stimulated by lipopolysaccharides in RAW264.7 cells showed that hydroxytyrosol butyrate exhibited the highest inhibition (IC50 7.0 μM) among the tested compounds.
Lipase-mediated selective acetylation of primary alcohols in ethyl acetate
de Souza, Ernane C.,Romero-Ortega, Moises,Olivo, Horacio F.
supporting information, p. 287 - 290 (2017/12/29)
An environmental friendly process to selectively acetylate primary alcohols was demonstrated. The esterification process consists of treatment of a primary alcohol in the presence of immobilized C. antarctica lipase (Novozyme-435) in ethyl acetate at room temperature. Primary alcohols were acetylated in the presence of secondary alcohols and phenols.