Stereoselective synthesis of verruculogen TR-2 featuring the mild formation of a dihydro-.beta.-carboline as an intermediate
作者:Pedro H. H. Hermkens、Ralf Plate、Chris G. Kruse、Hans W. Scheeren、Harry C. J. Ottenheijm
DOI:10.1021/jo00040a030
日期:1992.7
Reaction of indolyldiketopiperazine 5 with 2,3,4,5,6,6-hexachlorocyclohexadien-1-one (25) in dichloromethane/methanol provided the methoxyindolenine 29, which in the presence of TFA rearranged to the dehydrodiketopiperazine 6. This compound was elaborated to verruculogen TR-2 (2) employing osmium tetroxide oxidation.