抑制儿茶酚O-甲基转移酶(COMT)代表了一种可行的策略,可调节儿茶酚胺神经递质或其前体的分解代谢,并且在帕金森氏病的治疗中引起了极大的兴趣。本文中,我们报道了由硝基取代的配体1(K i = 28 nM,表1)衍生的新一代有效的COMT双底物抑制剂的开发,尽管邻苯二酚上没有NO 2取代基,该抑制剂仍具有很高的生物活性。部分。它们的合成利用会聚方法的优势,其中制备了一系列功能化的邻苯二酚中间体(方案2–7))并偶联至常见的腺苷衍生的烯丙基胺结构单元(方案8)。通过体外酶促测定和动力学研究确定的新合成抑制剂的生物活性清楚地表明,双底物抑制剂的高抑制能力与邻苯二酚OH基团的p K a不相关。发现通过联芳基型连接与邻苯二酚连接的芳族残基最大程度地受益于与该酶的其他有利疏水相互作用,因此是1中NO 2基团的优选替代物。竞争性动力学抑制机制(图2)相对于所述辅因子结合位点被证实在所有情况下,支撑用于抑制剂双底物抑制模式2
New COMT inhibitors for the treatment of depression and impaired cognition
申请人:Diederich Francois
公开号:US20050137162A1
公开(公告)日:2005-06-23
The present invention relates to compounds of formula I
wherein R
1
is as defined in the specification
and to esters thereof which are hydrolyzable under physiological conditions and to the pharmaceutically acceptable salts thereof. The compounds of the invention are inhibitors of COMT and, thus, are useful for the treatment of diseases for which COMT inhibition is beneficial. The invention further relates to the treatment, control, or prevention of diseases such as depression, schizophrenia, Parkinson's disease, and to improve cognition.
Dearomatization of Electron‐Deficient Phenols to
<i>ortho</i>
‐Quinones: Bidentate Nitrogen‐Ligated Iodine(V) Reagents
作者:Xiao Xiao、Nathaniel S. Greenwood、Sarah E. Wengryniuk
DOI:10.1002/anie.201909868
日期:2019.11.4
ortho‐quinones by direct oxidation of phenols. The reaction is enabled by a novel bidentate nitrogen‐ligated iodine(V) reagent, a previously unexplored class of compounds which we have termed Bi(N)‐HVIs. The reaction is extremely general and proceeds with excellent regioselectivity for the ortho over para isomer. Functionalization of the ortho‐quinone products was examined, resulting in a facile one‐pot synthesis
尽管其用途广泛,邻醌的合成仍然是一个重大挑战,特别是获得缺电子衍生物仍然是一个未解决的问题。这里报道了第一个通过酚类直接氧化合成缺电子邻醌的通用方法。该反应是通过一种新型双齿氮连接碘 (V) 试剂实现的,这是一类以前未开发的化合物,我们将其称为 Bi( N )-HVI。该反应非常普遍,并且对于邻位异构体和对位异构体具有优异的区域选择性。对邻醌产物的官能化进行了检查,从而实现了儿茶酚的简单一锅合成,以及多种杂原子亲核试剂的掺入。该方法代表了 Bi( N )-HVI的首次合成应用,并展示了它们作为进一步开发高反应性、高度可调的 I(V) 试剂的平台的潜力。
Metabolism of Nitrodiphenyl Ether Herbicides by Dioxin-Degrading Bacterium <i>Sphingomonas wittichii</i> RW1
作者:Young Soo Keum、Young Ju Lee、Jeong-Han Kim
DOI:10.1021/jf801362k
日期:2008.10.8
Nitrodiphenyl etherherbicides, including chlomethoxyfen, nitrofen, and oxyfluorfen are potent herbicides. Some metabolites and parent compounds are considered as possible mutagens and endocrine disruptors. Both properties pose serious hygienic and environmental risks. Sphingomonas wittichii RW1 is a well-known degrader of polychlorinated dibenzo- p-dioxins, dibenzofurans, and diphenylethers. However,
Derivatives of 4-(trifluoromethyl)-phenol and 4-(trifluoromethylphenyl)-2-(tetrahydropyranyl) ether and method for producing the same
申请人:——
公开号:US20040092754A1
公开(公告)日:2004-05-13
The invention relates to a method for producing 2- and 2,5-substituted derivatives of 4-(trifluoromethyl)-phenol and 4-(2-trifluoromethyl)-phenyl)-2-tetrahydropyranyl) ether and to novel derivatives. Said method is characterised in that a compound of formula (2) 4-(trifluoromethylphenyl)-2-(tetrahydropyranyl) ether is reacted with an electrophile E-X or a combination of electrophiles E-X and E-Y in the presence of a base, X and Y having the meanings given in the description.
COMT inhibitors for the treatment of depression and impaired cognition
申请人:Hoffmann-La Roche Inc.
公开号:US07319101B2
公开(公告)日:2008-01-15
The present invention relates to compounds of formula I
wherein R1 is as defined in the specification
and to esters thereof which are hydrolyzable under physiological conditions and to the pharmaceutically acceptable salts thereof. The compounds of the invention are inhibitors of COMT and, thus, are useful for the treatment of diseases for which COMT inhibition is beneficial. The invention further relates to the treatment, control, or prevention of diseases such as depression, schizophrenia, Parkinson's disease, and to improve cognition.