Agelas属的海绵产生的化合物可调节电压门控钠离子通道的活性,并为开发具有对抗大量生物靶标活性的化合物的新型支架做出贡献。特别是,据报道,clathrodin和dibromosceptrin可以降低离体鸡胚交感神经节细胞内钠电流的平均最大振幅。我们设想将这些化合物作为设计新型Na v通道调节剂的起点。这项努力是我们长期目标的一部分,该长期目标是设计一个全面的Agelas生物碱类似物文库,该文库将覆盖更广阔的化学空间,并使我们能够检查此类化合物对Na v的活性渠道。我们设计这一系列化合物的方法是,在保持clathrodin的末端结构特征的同时,使分子的中心部分变硬,并用4-亚甲基哌嗪部分取代3-氨基丙烯接头。使用自动膜片钳电生理技术筛选合成的化合物对人电压门控钠通道亚型Na v 1.3,Na v 1.4,心脏Na v 1.5和Na v 1.7的抑制作用。结果表明,我们获得了一系列对Na v
Efficient Cs2CO3-promoted solution and solid phase synthesis of carbonates and carbamates in the presence of TBAI
作者:Ralph N Salvatore、Feixia Chu、Advait S Nagle、Elona A Kapxhiu、Richard M Cross、Kyung Woon Jung
DOI:10.1016/s0040-4020(02)00286-7
日期:2002.4
Novel solution and solid-phase methods for the synthesis of carbonates and carbamates were developed using cesium bases and TBAI via a three-component coupling. Cesium carbonate not only promoted successful carbonylations of alcohols and carbamations of amines, but also suppressed common side reactions traditionally seen using existing protocols. Various alcohols and amines were examined, using a wide
Iridium and B(C6F5)3 co-catalyzed chemoselective deoxygenative reduction of tertiary amides: application to the efficient synthesis and late-stage modification of pharmaceuticals
The Vaska’s complex—tris(pentafluorophenyl)borane combination was found to be a highly efficient cooperative catalysis system for the hydrosilylative reduction of tertiary amides to yield amines under mild conditions. The reaction shows high chemoselectivity, tolerating halide, phenolyl, alkenyl, nitro, nitrile, ester, azido, ketone, and enone functional groups. For unsubstituted cyclohexanone carboxamide
A catalyst-free N-benzyloxycarbonylation of amines in aqueous micellar media at room temperature
作者:Janhavi J. Shrikhande、Manoj B. Gawande、Radha V. Jayaram
DOI:10.1016/j.tetlet.2008.05.010
日期:2008.8
N-Benzyloxycarbonylation of amines was carried out in aqueous micellar media. Aliphatic (open and cyclic), aromatic and heteroaromatic amines react with Cbz-Cl to give excellent yields of products. The reactions were carried out in water and at room temperature. (C) 2008 Elsevier Ltd. All rights reserved.
Efficient Carbamate Synthesis via a Three-Component Coupling of an Amine, CO<sub>2</sub>, and Alkyl Halides in the Presence of Cs<sub>2</sub>CO<sub>3</sub> and Tetrabutylammonium Iodide
作者:Ralph N. Salvatore、Seung Il Shin、Advait S. Nagle、Kyung Woon Jung
DOI:10.1021/jo001140u
日期:2001.2.1
1-carbobenzoxypiperazines and process of preparing same