381226-39-7Relevant articles and documents
Design, synthesis and evaluation of cinnamic acid ester derivatives as mushroom tyrosinase inhibitors
Sheng, Zhaojun,Ge, Siyuan,Xu, Ximing,Zhang, Yan,Wu, Panpan,Zhang, Kun,Xu, Xuetao,Li, Chen,Zhao, Denggao,Tang, Xiaowen
, p. 853 - 861 (2018)
Tyrosinase is a key enzyme in melanin biosynthesis, and is also involved in the enzymatic browning of plant-derived foods. Tyrosinase inhibitors are very important in medicine, cosmetics and agriculture. In order to develop more active and safer tyrosinase inhibitors, an efficient approach is to modify natural product scaffolds. In this work, two series of novel tyrosinase inhibitors were designed and synthesized by the esterification of cinnamic acid derivatives with paeonol or thymol. Their inhibitory effects on mushroom tyrosinase were evaluated. Most of these compounds (IC50: 2.0 to 163.8 μM) are found to be better inhibitors than their parent compounds (IC50: 121.4 to 5925.0 μM). Among them, (E)-2-acetyl-5-methoxyphenyl-3-(4-hydroxyphenyl)acrylate (5a), (E)-2-acetyl-5-methoxyphenyl-3-(4-methoxyphenyl)acrylate (5g) and (E)-2-isopropyl-5-methylphenyl-3-(4-hydroxyphenyl)acrylate (6a) showed strong inhibitory activities; the IC50 values were 2.0 μM, 8.3 μM and 10.6 μM, respectively, compared to the positive control, kojic acid (IC50: 32.2 μM). Analysis of the inhibition mechanism of 5a, 5g and 6a demonstrated that their inhibitory effects on tyrosinase are reversible. The inhibition kinetics, analyzed by Lineweaver-Burk plots, revealed that 5a acts as a non-competitive inhibitor while 5g and 6a are mixed-type inhibitors. Furthermore, docking experiments were carried out to study the interactions between 6a and mushroom tyrosinase.
Highly enantioselective synthesis of angelmarin
Jiang, Hang,Hamada, Yasumasa
supporting information; experimental part, p. 4173 - 4176 (2009/12/06)
Angelmarin (1), a novel anti-cancer agent, was efficiently synthesized through a highly enantioselective epoxidation and a copper cyanide-mediated esterification of the hindered alcohol as the key steps in 53% overall yield.
Total synthesis of cimiracemate B and analogs
Fache, Fabienne,Suzan, Nicolas,Piva, Olivier
, p. 5261 - 5266 (2007/10/03)
The synthesis of the biologically active cimiracemate B and some analogs is described. The key step of the synthesis is a coupling between a bromoketone and a cinnamic acid derivative.
Cycloalkyl alkanoic acids as integrin receptor antagonists derivatives
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Page 26, (2010/02/07)
The present invention relates to a class of compounds represented by the Formula I or a pharmaceutically acceptable salt thereof, pharmaceutical compositions comprising compounds of the Formula I, and methods of selectively inhibiting or antagonizing the αvβ3 and/or αvβ5 integrin.
Oxygenated analogues of 1-[2-(diphenylmethoxy)ethyl]- and 1- [2- [bis (4-fluorophenyl)methoxy]ethyl]-4-(3-phenylpropyl)piperazines (GBR 12935 and GBR 12909) as potential extended-action cocaine-abuse therapeutic agents
Lewis, David B.,Matecka, Dorota,Zhang, Ying,Hsin, Ling-Wei,Dersch, Christina M.,Stafford, David,Glowa, John R.,Rothman, Richard B.,Rice, Kenner C.
, p. 5029 - 5042 (2007/10/03)
An investigation into the preparation of potential extended-release cocaine-abuse therapeutic agents afforded a series of compounds related to 1- [2-(diphenylmethoxy)ethyl]-4-(3-phenylpropyl)piperazine (1a) and 1-[2-[bis(4- fluorophenyl)methoxy]ethyl]-4-(
HIV-1 protease inhibitors based on hydroxyethylene dipeptide isosteres: An investigation into the role of the P1' side chain on structure-activity
Young,Payne,Thompson,Gaffin,Lyle,Britcher,Graham,Schultz,Deana,Darke,Zugay,Schleif,Quintero,Emini,Anderson,Huff
, p. 1702 - 1709 (2007/10/02)
A systematic investigation was undertaken to determine the role of the P1' sidechain in a series of hydroxyethylene isostere based inhibitors of HIV-1 protease. Substitution and homologation of the benzyl P1' side chain of the Phe-Phe isostere based pseudo peptides 1 (L-682,679) and 2 (L-685,434) with various heteroalkyl groups leads to a series of extremely potent inhibitors of the enzyme. Several examples of the most potent inhibitors were very effective in an ex vivo cell based viral spread assay using human H9 T- lymphocytes and the IIIb isolate of HIV-1. Compound 19 is 120 times more potent than 1 and 16 times more potent than 2 in inhibiting the spread of infection in this assay.
