Rh(II)‐Catalyzed Denitrogenative Reaction of 1,2,3‐Triazolyl Esters with Indoles or Arenes: Efficient Synthesis of Homotryptamines or Allylamines
作者:Kuntal Pal、Geetanjali S. Sontakke、Chandra M. R. Volla
DOI:10.1002/adsc.202000632
日期:2020.9.8
efficient strategy for the synthesis of structurally diverse homotryptamines and allyl amines via a Rh(II)‐catalyzed tandem reaction of 1,2,3‐triazolyl esters with either indoles or 1,3,5‐trimethoxybenzene has been developed. The reaction proceeds via Rh(II)‐catalyzed intramolecular rearrangement of triazoles into 1‐azadienes followed by regioselective nucleophilic addition. The efficiency of the current
Synthesis of Cyclopenta[
<i>b</i>
]indoles via a Formal [3+2] Cyclization of
<i>N</i>
‐Sulfonyl‐1,2,3‐triazoles and Indoles
作者:Shengguo Duan、Wan Zhang、Yuntong Hu、Ze‐Feng Xu、Chuan‐Ying Li
DOI:10.1002/adsc.202000624
日期:2020.9.8
Annulation of benzoxy‐tethered N‐sulfonyl‐1,2,3‐triazoles and indoles has been developed in this paper, providing an efficient and convenient access to valuable cyclopenta[b]indoles in moderate to good yields. α,β‐Unsaturated imine, which generated in situ from denitrogenation and 1,2‐OBz migration of triazole, provided three carbons for the formal [3+2] cyclization reaction for the first time.
本文开发了苯氧基束缚的N-磺酰基-1,2,3-三唑和吲哚的环化反应,可有效,方便地获得中度到良好收率的有价值的环戊[ b ]吲哚。由三唑的脱氮和1,2-OBz迁移原位产生的α,β-不饱和亚胺,首次为正式的[3 + 2]环化反应提供了三个碳。
7-Chloroquinolinotriazoles: Synthesis by the azide–alkyne cycloaddition click chemistry, antimalarial activity, cytotoxicity and SAR studies
作者:Guilherme R. Pereira、Geraldo Célio Brandão、Lucas M. Arantes、Háliton A. de Oliveira、Renata Cristina de Paula、Maria Fernanda A. do Nascimento、Fábio M. dos Santos、Ramon K. da Rocha、Júlio César D. Lopes、Alaíde Braga de Oliveira
DOI:10.1016/j.ejmech.2013.11.022
日期:2014.2
triazole moiety were synthesized via copper-catalyzed cycloaddition (CuAAC) click chemistry between 4-azido-7-chloroquinoline and several alkynes. All the synthetic compounds were evaluated for their in vitro activity against Plasmodium falciparum (W2) and cytotoxicity to Hep G2A16 cells. All the products disclosed low cytotoxicity (CC50 > 100 μM) and five of them have shown moderate antimalarial activity