Mode of Action of 4-Hydroxyphenylpyruvate Dioxygenase Inhibition by Triketone-type Inhibitors
作者:Chung-Shieh Wu、Jian-Lin Huang、Yang-Sheng Sun、Ding-Yah Yang
DOI:10.1021/jm010568y
日期:2002.5.1
A series of 2-(2-nitrobenzoyl)cyclohexane-1,3-dione analogues (1-9) were designed, synthesized, and evaluated for inhibition of 4-hydroxyphenylpyruvate dioxygenase (4-HPPD), a key enzyme involved in the catabolism of tyrosine which catalyzes the conversion of 4-hydroxyphenylpyruvate to homogentisate. The correlations between the results of enzyme inhibition, ferric chloride tests, and the conformational analysis suggested that the tight binding between triketone-type inhibitors and 4-HPPD is likely due to chelation of the enzyme-bound ferric iron with the enol tautomer of 1,3-diketone moiety of the triketones. The presence of a 2-carbonyl group in the triketone is an essential structural feature for potent 4-HPPD inhibition. Modification of the 3-carbonyl group of triketone moiety to other functionality will reduce the overall planarity and thus prevent keto-enol tautomerization, resulting in a decrease or lack. of inhibition activity.
PHOTOLABILE BETA-DICARBONYL COMPOUNDS
申请人:3M INNOVATIVE PROPERTIES COMPANY
公开号:US20200354484A1
公开(公告)日:2020-11-12
The present disclosure provides a redox initiator system for initiating polymerization comprising an oxidizing agent, a photolabile reducing agent, and a transition metal complex that participates in a redox cycle. On exposure to actinic radiation, such as UV, the photolabile compound photolyzes, releasing the reducing agent and initiating the redox-initiated polymerization
[EN] PHOTOLABILE BETA-DICARBONYL COMPOUNDS<br/>[FR] COMPOSÉS DE BÊTA-DICARBONYLE PHOTOLABILES
申请人:3M INNOVATIVE PROPERTIES CO
公开号:WO2019152267A1
公开(公告)日:2019-08-08
The present disclosure provides a redox initiator system for initiating polymerization comprising an oxidizing agent, a photolabile reducing agent, and a transition metal complex that participates in a redox cycle. On exposure to actinic radiation, such as UV, the photolabile compound photolyzes, releasing the reducing agent and initiating the redox-initiated polymerization
[EN] METHOD OF DISPOSING AN ADHESIVE ONTO A SUBSTRATE AND ARTICLE<br/>[FR] PROCÉDÉ DE DISPOSITION D'UN ADHÉSIF SUR UN SUBSTRAT ET ARTICLE
申请人:3M INNOVATIVE PROPERTIES CO
公开号:WO2021019353A1
公开(公告)日:2021-02-04
A method of disposing an adhesive composition onto a first surface of a first substrate comprises: a) disposing a photoactivatable adhesive precursor composition onto at least a portion of the first surface of the first substrate according to a predetermined pattern, and b) exposing the photoactivatable adhesive precursor composition to actinic electromagnetic radiation, thereby providing an adhesive precursor composition that spontaneously cures to provide the adhesive composition. The photoactivatable adhesive precursor composition comprises: at least one free-radically polymerizable compound and a photoactivatable redox initiation system comprising: (i) at least one photoactivatable reducing agent precursor; (ii) at least one transition metal compound comprising at least one metal selected from groups 5 to 11 in the Periodic Table of the Elements; (iii) optional organic peroxide; and (iv) optional quaternary ammonium halide. An article preparable according to the method is also disclosed.
Photochemistry of 2-Nitrobenzyl Enol Ethers: Oxidative CC Bond Scission
作者:Promise K. Yong、Anamitro Banerjee
DOI:10.1021/ol0508072
日期:2005.6.1
[reaction: see text] 2-Nitrobenzyl enolethers, when photolyzed in the presence of air, result in an oxidative C=C bond scission, forming a ketone as the major product (>60% yield). Enol release leads to the aldehyde as the minor product.