Highly Efficient Preparation of Selectively Isotope Cluster-Labeled Long Chain Fatty Acids via Two Consecutive C<sub>sp<sup>3</sup></sub>–C<sub>sp<sup>3</sup></sub> Cross-Coupling Reactions
作者:Sébastien Lethu、Shigeru Matsuoka、Michio Murata
DOI:10.1021/ol4036159
日期:2014.2.7
An efficient synthesis involving two copper-catalyzed alkyl–alkyl coupling reactions has been designed to easily access doubly isotope-labeled fatty acids. Such NMR- and IR-active compounds were obtained in excellent overall yields and will be further used for determining the conformation of an alkyl chain of lipidic biomolecules upon interaction with proteins.
A Facile Synthesis and Enzymatic Resolution of Naturally Occurring Remotely Functionalized Alkylmethylmaleic Anhydrides from<i>Aspergillus wentii</i>: Aspergillus Acids A-D
作者:Narshinha P. Argade、Srinivasan Easwar
DOI:10.1055/s-2006-926326
日期:——
The first synthesis of four new naturallyoccurring remotely functionalized secondary mould metabolite anhydrides lad is described starting from N-p-tolyl citraconimide (5) in three to six steps and 20-65% overall yields. The condensation of triphenylphosphine-maleimide adduct 6 with aldehyde 4 furnished the exoimide 7, which after isomerization, hydrolysis, and acylation gave aspergillus acid A (la)
描述了四种新的天然存在的远程功能化次级霉菌代谢物酸酐 lad 的首次合成,从 Np-甲苯基柠康酰亚胺 (5) 开始,分三到六步,总产率为 20-65%。三苯基膦-马来酰亚胺加合物 6 与醛 4 的缩合提供了外酰亚胺 7,其在异构化、水解和酰化后在四个步骤中以 54% 的总产率得到曲霉酸 A (Ia)。加合物6与醛15的缩合类似地在两个步骤中提供了所需的酰亚胺17。酰亚胺 17 的酸催化水解直接提供曲霉酸 B (1b),暴露出作为末端乙炔存在的潜在甲基酮。硼氢化钠诱导曲霉酸 B (1b) 的化学选择性还原产生曲霉酸 C (1c),在乙酸酐诱导的酰化作用下,提供曲霉酸 D (1d)。曲霉酸 C (1c) 的简便 Amano PS 催化酰化以良好的收率得到所需的 (+)-曲霉酸 C (1e) 在 70% ee 中和 (-)-曲霉酸 D (If) 在 72% ee . 在目前的酶促反应中,酸酐部分
Cyclohexenonic Long-Chain Fatty Alcohols as Neuronal Growth Stimulators
作者:Bang Luu、José-Luis De Aguilar、Céline Girlanda-Junges
DOI:10.3390/51201439
日期:——
Neurotrophic factors play an important role in the development and maintenance of neurons, thus providing a suitable therapeutic approach for the treatment of neurodegenerative diseases. However, their clinical use has revealed problematic because of a number of technical and biological disadvantages. Among the different strategies proposed to overcome such difficulties, the search for non-peptide substances with neurotrophic potential is giving promising results. Here we will expose major findings in this field, drawing special attention to cyclohexenonic long-chain fatty alcohols, a novel family of compounds that promote neuronal survival and neurite outgrowth.
[EN] PYRROLE DERIVATIVES AS ACC INHIBITORS<br/>[FR] DÉRIVÉS DE PYRROLE UTILISÉS EN TANT QU'INHIBITEURS D'ACC
申请人:ALMIRALL SA
公开号:WO2019115405A1
公开(公告)日:2019-06-20
Novel pyrrole derivatives of Formula (I) are disclosed; as well as process for their preparation, pharmaceutical compositions comprising them and their use in therapy as inhibitors of Acetyl- CoA carboxylase (ACC).
Design, synthesis and biological evaluation of novel pyrazolone derivatives as selective butyrylcholinesterase inhibitors with antioxidant activity against Alzheimer's disease
作者:Zhipeng Zhang、Maojun Cheng、Jie Guo、Yang Wan、Rikang Wang、Yuanying Fang、Yi Jin、Sai-Sai Xie、Jing Liu
DOI:10.1016/j.molstruc.2021.132319
日期:2022.4
activities, antioxidant activities and blood-brainbarrier (BBB) permeabilities. Besides, the compounds 5g, 5h, 5i and 5o with submicromolar IC50 values as well as good BuChE selectivity were chosen to assess their cytotoxicity in PC12 cells. Among them, compound 5i was the most selective BuChE inhibitor (SI: >200) and showed the good abilities to penetrate BBB, scavenge free radicals (1.04 trolox equivalent)