Palladium-catalyzed N1-selective allylation of indoles with allylic alcohols promoted by titanium tetraisopropoxide
作者:Chieh-Yu Chang、Yu-Huan Lin、Yen-Ku Wu
DOI:10.1039/c8cc09817d
日期:——
This chemistry provides a facile route to a variety of allylated indoles in synthetically useful yields. The utility of this simple allylation reaction was demonstrated with the first total synthesis of (+)-N-(4′-hydroxyprenyl)-cyclo(alanyltryptophyl), which was completed in five steps, starting from L-tryptophan methylester hydrochloride.
Indolediketopiperazine Alkaloids from Eurotium cristatum EN-220, an Endophytic Fungus Isolated from the Marine Alga Sargassum thunbergii
作者:Feng-Yu Du、Xin Li、Xiao-Ming Li、Li-Wei Zhu、Bin-Gui Wang
DOI:10.3390/md15020024
日期:——
new indolediketopiperazine derivatives (1-4), along with nine known congeners (5-13), were isolated and identified from the culture extract of Eurotium cristatum EN-220, an endophytic fungus obtained from the marinealga Sargassum thunbergii. The structures of thesecompounds were elucidated on the basis of extensive spectroscopic analysis and the absoluteconfigurations of compounds 1-4 were established