Total synthesis of 5,5′,6,6′-tetrahydroxy-3,3′-biindolyl, the proposed structure of a potent antioxidant found in beetroot (Beta vulgaris)
摘要:
5,5',6,6'-Tetrahydroxy-3,3'-biindolyl, the proposed structure of a phenolic antioxidant isolated from the red beetroot (Beta vulgaris), has been synthesised. The spectroscopic data of the synthetic material is not consistent with that reported for the natural product. (C) 2004 Published by Elsevier Ltd.
Total synthesis of 5,5′,6,6′-tetrahydroxy-3,3′-biindolyl, the proposed structure of a potent antioxidant found in beetroot (Beta vulgaris)
摘要:
5,5',6,6'-Tetrahydroxy-3,3'-biindolyl, the proposed structure of a phenolic antioxidant isolated from the red beetroot (Beta vulgaris), has been synthesised. The spectroscopic data of the synthetic material is not consistent with that reported for the natural product. (C) 2004 Published by Elsevier Ltd.
Significant Enhancement of the Stille Reaction with a New Combination of Reagents—Copper(I) Iodide with Cesium Fluoride
作者:Simon P. H. Mee、Victor Lee、Jack E. Baldwin
DOI:10.1002/chem.200401162
日期:2005.5.20
The combination of copper(I) iodide and cesiumfluoridesignificantlyenhances the Stillereaction. After extensive optimisation, a variety of electronically unfavourable and sterically hindered substrates were coupled in very high yields under mild conditions.
Efficient Synthesis of 5,6-Dihydroxyindole Dimers, Key Eumelanin Building Blocks, by a Unified <i>o</i>-Ethynylaniline-Based Strategy for the Construction of 2-Linked Biindolyl Scaffolds
A unified convenient strategy for the synthesis of 5,6-dihydroxyindole-derived 2,7′-, 2,2′-, and 2,3′-biindolyls is reported, which is based on proper manipulation of key o-ethynylaniline precursors. By the same methodology 5,6-diacetoxy-7-iodoindole can also be obtained in good yield.