几种源自昆虫病原真菌的天然产物已显示在大鼠嗜铬细胞瘤 PC12 细胞系中启动神经元分化。在成功完成全合成程序后,目标是在保持生物活性的同时降低结构复杂性。在这项研究中,法里松酮 C 作为先导结构并启发了复杂性降低的小分子的制备,其中一些能够诱导神经突生长。这允许详细说明结构-活性关系。利用计算相似性集成方法对作用模式的研究表明,内源性大麻素系统作为我们类似物的潜在靶标的参与,还导致发现了四种有效的新内源性大麻素转运抑制剂。
Novel Lipids and Compositions for Intracellular Delivery of Biologically Active Compounds
申请人:Constien Rainer
公开号:US20120295832A1
公开(公告)日:2012-11-22
The present invention provides novel amino-lipids, compositions comprising such amino-lipids and methods of producing them. In addition, lipid nanoparticles comprising the novel amino-lipids and a biologically active compound are provided, as well as methods of production and their use for intracellular drug delivery.
Modular and Fast Synthesis of Versatile Secondary α,α‐Dialkyl Boronates via Deoxygenative Alkylboration of Aldehydes
作者:Wenhao Xu、Purui Zheng、Jun Zhou、Zihao Hu、Tao XU
DOI:10.1002/anie.202214213
日期:2022.12.5
Secondaryα,α-dialkyl boronates are widely used derivatives due to their great versatility. Herein, we report an unprecedented method to access those products directly from the deoxygenativealkylboration of aldehydes. A sequence of difunctionalization can be achieved smoothly from the readily available aldehydes instead of commonly used alkenes in only two steps.
halogen-atom transfer mechanism, which provides innovative and efficient access to various gem-difluorohomoallylic alcohols under mild conditions with broad substrate scope. Preliminary mechanistic experimental and computational studies demonstrate that this radical-to-polar crossover transformation could be achieved by sequentially orchestrated Lewis acid activation, halogen-atom transfer, radical addition
Enantioselective C(sp<sup>3</sup>)–C(sp<sup>3</sup>) Reductive Cross-Electrophile Coupling of Unactivated Alkyl Halides with α-Chloroboronates via Dual Nickel/Photoredox Catalysis
作者:Jun Zhou、Dong Wang、Wenhao Xu、Zihao Hu、Tao XU
DOI:10.1021/jacs.2c13220
日期:2023.2.1
enantioconvergent C(sp3)–C(sp3) bondformations have been made with nickel-catalyzed cross-coupling of racemic alkyl electrophiles with organometallic reagents or nickel-hydride-catalyzed hydrocarbonation of alkenes. Herein, we report an unprecedented enantioselective C(sp3)–C(sp3) reductive cross-coupling by the direct utilization of two different alkyl halides with dual nickel/photoredoxcatalysis system.
Amide-Directed, Rhodium-Catalyzed Regio- and Enantioselective Hydroacylation of Internal Alkenes with Unfunctionalized Aldehydes
作者:Xin Sun、Peng-Chao Gao、Yu-Wen Sun、Bi-Jie Li
DOI:10.1021/jacs.3c10609
日期:2024.1.10
hydroacylations, highly enantioselective catalytic addition of unfunctionalized aldehydes to internal alkenes remains an unsolved challenge. Here, using a coordination-assisted strategy, we developed a rhodium-catalyzed regio- and enantioselectiveaddition of unfunctionalized aldehydes to internal alkenes such as enamides and β,γ-unsaturated amides. Valuable α-amino ketones and 1,4-dicarbonyl compounds were