Total synthesis and anti-leishmanial activity of R-(−)-argentilactone
摘要:
Starting from the commercially available D-glucal (2), the naturally Occurring alpha,beta -unsaturated delta -lactone argentilactone (1a) has been synthesized. The important step is the configuration inversion at C-6 by the Mitsunobu reaction following the sugar-non-sugar-sugar strategy. The synthetic argentilactone has been tested against Leishmania mexicana for bioactivity. (C) 2001 Elsevier Science Ltd. All rights reserved.
Total syntheses of (R)-argentilactone and (R)-goniothalamin via catalytic enantioselective allylation of aldehydes
作者:Ângelo de Fátima、Ronaldo Aloise Pilli
DOI:10.1016/j.tetlet.2003.09.122
日期:2003.11
The totalsyntheses of (R)-argentilactone (five steps, 25% overall yield) and (R)-goniothalamin (three steps, 61% overall yield) have been described through the enantioselectivecatalytic allylation of aldehydes (including a propargylic aldehyde) which provided a rapid access to these natural products that display very interesting biological activities.
Total Synthesis of (R)-Argentilactone and (R)-Goniothalamin Using a Free-Radical Photoredox Approach to α,β-Unsaturated δ-Lactones
作者:Alejandro Cordero-Vargas、Francisco J. Fuentes-Pantoja
DOI:10.1055/a-1550-7659
日期:2021.12
α,β-Unsaturatedδ-lactones are structural motifs found in diverse pharmacologically active natural products. In fact, the unsaturated lactone is often responsible for the biological activity. Herein, we report a new approach for the syntheses of (R)-argentilactone and (R)-goniothalamin based on a photoredox intermolecular iodolactonization mediated by a photoredox process. This new approach, already
The simple and efficient asymmetric syntheses of (R)-(-)-argentilactone and (S)-5-hexadecanolide were achieved from the same starting material by a similar strategy. The key intermediates for both molecules were chiral 5-hydroxyalk-2-en-6-ynoates.
Enantioselective syntheses of (R)- and (S)-argentilactone and their cytotoxic activities against cancer cell lines
作者:Ângelo de Fatima、Luciana Konecny Kohn、Márcia Aparecida Antônio、João Ernesto de Carvalho、Ronaldo Aloise Pilli
DOI:10.1016/j.bmc.2004.07.044
日期:2004.10
Concise total syntheses of (R)- and (S)-argentilactone have been developed via enantioselective catalytic allylation (ECA) and ring-closing metathesis pathways (four steps, 39% overall yield and 82-84% ee) from 2-octynal and their in vitro activity against cancer cells is described.
A synthesis of (R)-(-)-argentilactone is reported starting from the (S)-enantiomer of glycidol. The synthesis is based on ring closing metathesis of the acrylic ester of (R)-1-O-(tert-butyldiphenylsilyl)-4-penten-1,2-diol 4. (C) 2002 Elsevier Science Ltd. All rights reserved.