Different synthetic approaches for the elaboration of poly and
diversely substituted isoindolinones tailed with constitutionally
diverse aminoalkylated chains have been developed. The key step
is based upon the preliminary assembly of the isoindolinone
template equipped with hydroxyalkyl appendages. Subsequent manipulation
of the terminal hydroxy functionality afforded the targeted compounds
and the synthetic utility of these approaches has been emphasized
by the synthesis of the bradycardic agent falipamil and 5-HT1A receptor
ligand analogues.
carbanions - metalation - lactams - ring
closure - ring opening