羟基酪醇是一种天然存在的具有抗氧化性能的邻酚类化合物,它是通过三步高产率程序从天然和低成本的化合物(例如酪醇或高香草醇)合成的。首先,通过使用碳酸二甲酯(DMC)作为试剂/溶剂,对这些化合物的醇基进行有效的化学选择性保护。其次,用2-碘氧基苯甲酸(IBX)或Dess-Martin高碘烷试剂(DMP)氧化并用连二亚硫酸钠(Na 2 S 2 O 4)原位还原,可以制备羧甲基化羟基酪醇。最终,通过温和的水解步骤,以高收率和高纯度获得了羟基酪醇,这已通过NMR光谱和HPLC谱图得到了证实。通过类似的方法,亲脂性羟基酪醇衍生物被用作药物,食品,和化妆品制剂,都准备好了。实际上,首先,通过使用酰氯在没有任何催化剂的情况下对酪醇和高香草醇的醇基团进行化学选择性保护,以获得相应的亲脂性衍生物,然后将这些化合物以高收率和高纯度转化为羟基酪醇衍生物。 IBX或DMP和Na2S2O4的氧化/还原途径。
N-ACYL ANTHRANILIC ACID DERIVATIVE OR SALT THEREOF
申请人:Yokotani Junichi
公开号:US20110275797A1
公开(公告)日:2011-11-10
An N-acyl anthranilic acid derivative represented by general formula (1) or a salt thereof is useful for prevention or treatment of diseases associated with excessive production of collagen. (In the formula, R
1
represents a carboxyl group or the like; R
2
represents a hydrogen atom or the like; R
3
represents an optionally substituted aryl group or the like; X
1
represents a carbonyl group; X
2
represents a bonding hand; X
3
represents a bonding hand; X
4
represents a bonding hand or the like; and A represents an optionally substituted phenyl group or the like.)
NOVEL 3-PHENYL ACRYLIC ACID COMPOUND ACTIVATORS OF TYPE PPAR RECEPTORS AND PHARMACEUTICAL/COSMETIC COMPOSITIONS COMPRISED THEREOF
申请人:BOITEAU Jean-Guy
公开号:US20100144884A1
公开(公告)日:2010-06-10
Novel 3-phenyl acrylic acid compounds have the following general formula (I):
and are formulated into pharmaceutical compositions for administration in human or veterinary medicine (in dermatology, as well as in the field of cardiovascular diseases, immune diseases and/or diseases associated with lipid metabolism), or into cosmetic compositions.
3-phenyl acrylic acid compound activators of type PPAR receptors and pharmaceutical/cosmetic compositions comprised thereof
申请人:Boiteau Jean-Guy
公开号:US08404836B2
公开(公告)日:2013-03-26
Novel 3-phenyl acrylic acid compounds have the following general formula (I):
and are formulated into pharmaceutical compositions for administration in human or veterinary medicine (in dermatology, as well as in the field of cardiovascular diseases, immune diseases and/or diseases associated with lipid metabolism), or into cosmetic compositions.
Magnolol derivatives as specific and noncytotoxic inhibitors of breast cancer resistance protein (BCRP/ABCG2)
作者:Isadora da Silva Zanzarini、Diogo Henrique Kita、Gustavo Scheiffer、Kelly Karoline dos Santos、Julia de Paula Dutra、Matteo Augusto Pastore、Fabiane Gomes de Moraes Rego、Geraldo Picheth、Suresh V. Ambudkar、Luana Pulvirenti、Nunzio Cardullo、Vivian Rotuno Moure、Vera Muccilli、Corrado Tringali、Glaucio Valdameri
DOI:10.1016/j.bioorg.2024.107283
日期:2024.5
The breastcancerresistanceprotein (BCRP/ABCG2) transporter mediates the efflux of numerous antineoplastic drugs, playing a central role in multidrug resistance related to cancer. The absence of successful clinical trials using specific ABCG2 inhibitors reveals the urge to identify new compounds to attend this critical demand. In this work, a series of 13 magnololderivatives was tested as ABCG2
The olive oil phenol hydroxytyrosol (3), as well its metabolite homovanillic alcohol (4), were subjected to chemoselective lipase-catalysed acylations, affording with good yield 10 derivatives (5-14) bearing C-2, C-3, C-4, C-10 and C-18 acyl chains at C-1. Hydroxytyrosol (3) and its lipophilic derivatives showed very good DPPH radical scavenging activity. Compounds 3, 4 and their lipophilic analogues 5-14 were subjected to the atypical Comet test on whole blood cells: 3 and its analogues 5 and 6, with little hydrophobic character (logP <= 1.20), showed a good protective effect against H2O2 induced oxidative DNA damage. The homovanillic alcohol 4 and its analogues 10-14 resulted scarcely effective both as radical scavengers and antioxidant agents. (c) 2006 Elsevier Inc. All rights reserved.