The present invention relates to oxazolidinone derivatives of formula (I) wherein Y, R
3
and R
4
are as described in the description, to their preparation, to pharmaceutically acceptable salts thereof, and to their use as pharmaceuticals, to pharmaceutical compositions containing one or more compounds of formula (I), and especially to their use as orexin receptor antagonists.
The present invention relates to oxazolidinone derivatives of formula (I) wherein Y, R3 and R4 are as described in the description, to their preparation, to pharmaceutically acceptable salts thereof, and to their use as pharmaceuticals, to pharmaceutical compositions containing one or more compounds of formula (I), and especially to their use as orexin receptor antagonists.
Preparation of<i>ortho</i>-aryl-benzaldehyde derivatives<i>via</i>free-radical<i>ipso</i>-substitution of an amidomethyl group
作者:Luc Giraud、Emmanuel Lacǒte、Philippe Renaud
DOI:10.1002/hlca.19970800714
日期:1997.11.3
Preparation of 2-biarylcarbaldehydes using an intramolecular free-radical ispo-substitution is described. The two aryl moieties to be coupled are pre-associated using a glycolamide derivative. An unusual amidomethyl leaving group was successfully employed in this process.