Total Synthesis of the Fumiquinazoline Alkaloids: Solution-Phase Studies<sup>1</sup>
作者:Haishan Wang、A. Ganesan
DOI:10.1021/jo9914364
日期:2000.2.1
Biomimetic total syntheses of glyantrypine, fumiquinazoline F, fumiquinazoline G, and fiscalin B were achieved in four steps from tryptophan methyl ester. In the key step, the anthranilamide residue in a linear tripeptide is dehydrated to a benzoxazine by reaction with triphenylphosphine, iodine, and a tertiary amine. The benzoxazines subsequently undergo rearrangement to the natural products via an amidine