Synthesis and evaluation of a series of homologues of lobelane at the vesicular monoamine transporter-2
摘要:
A series of lobelane homologues has been synthesized and evaluated for their [(3)H]DTBZ binding affinity at the vesicular monoamine transporter-2 (VMAT2). The structure-activity relationships (SAR) indicate that for retention of binding affinity at VMAT2, the lengths of the methylene linkers should be no shorter than one methylene unit at C-6 of the piperidine ring, and no shorter than two methylene units at C-2 of the piperidine ring. These results indicate that the intramolecular distances between the piperidine ring and two phenyl rings in lobelane analogues are an important criterion for retention of high affinity at VMAT2. (C) 2008 Elsevier Ltd. All rights reserved.
Borane-Catalyzed Reduction of Pyridines via a Hydroboration/Hydrogenation Cascade
作者:Zhao-Ying Yang、Heng Luo、Ming Zhang、Xiao-Chen Wang
DOI:10.1021/acscatal.1c02876
日期:2021.9.3
of pyridines. The method was particularly effective for 2,3-disubstitutedpyridines, which generated piperidines in high yields with high cis selectivity. Mechanistic studies indicated that the pyridine substrates and the piperidine products sequentially acted as bases in cooperation with B(C6F5)3 to split H2. The broad functional group tolerance of the method allowed its use for the synthesis of some
我们已经开发了一种用于 B(C 6 F 5 ) 3催化的吡啶的硼氢化/氢化级联还原的方法。该方法对 2,3-二取代吡啶特别有效,它以高产率和高顺式选择性生成哌啶。机理研究表明,吡啶底物和哌啶产物依次作为碱基与B(C 6 F 5 ) 3合作分裂H 2。该方法的广泛官能团耐受性使其可用于合成一些生物活性分子。