Evaluation of alternative approaches for the synthesis of macrocyclic bisindolylmaleimides
作者:Stephen Bartlett、Adam Nelson
DOI:10.1039/b405010j
日期:——
for a wide range of attempted macrocyclisation reactions (palladium-catalysed pi-allyl substitution, ring-closing metathesis, McMurry reaction, iodocyclisation, formation of a silylene derivative, substitution of an alpha,omega-disubstituted electrophile). The failure of all of these reactions was ascribed to the strained nature of the target ringsystem. However, with longer tethers (six to ten atoms)