Absolute configuration of gomadalactones A, B and C, the components of the contact sex pheromone of Anoplophora malasiaca
作者:Kenji Mori
DOI:10.1016/j.tetlet.2007.06.054
日期:2007.8
Absolute configuration of gomadalactones A (1), B (2) and C (3), the pheromone components of the white-spotted longicorn beetle (Anoplophora malasiaca) was assigned as (1S,4R,5S)-1, (1R,4R,5R)-2 and (1S,4R,5S,8S)-3 by comparing their published CD spectra with those of (1R,5R)-(+)-4,4,8-trimethyl-3-oxabicyclo[3.3.0]oct-7-ene-2,6-dione (4) and (I S,5R,8S)-(+)-4,4,8-trimethyl3-oxabicyclo[3.3.0]octane-2,6-dione (5) prepared from (R)-(-)-carvone (6). (c) 2007 Elsevier Ltd. All rights reserved.
Synthetic Route Development for the Laboratory Preparation of Eupalinilide E
作者:Trevor C. Johnson、Matthew R. Chin、Dionicio Siegel
DOI:10.1021/acs.joc.7b00266
日期:2017.5.5
permitted a scalable synthesis of the natural product. Two routes that failed to access eupalinilide E were triaged either as a result of providing an incorrect diastereomer or due to lack of synthetic efficiency. The successful strategy relied on late-stage allylicoxidations at two separate positions of the molecule, which significantly increased the breadth of reactions that could be used to this point