New spirolactams having a benzodienone moiety and a azetidinone moiety which are highly stable due to pi interactions. They are useful as UV absorbers and as synthetic intermediates.
New spirolactams of formula (I) having a cycloexadienone moiety which are highly stable due to pi interactions between the W group and the dienone moiety. They are useful as UV absorbers and as intermediates for the synthesis of active biomolecules.
US7291728B2
申请人:——
公开号:US7291728B2
公开(公告)日:2007-11-06
New spirolactams and their synthesis
申请人:LABORATORIOS DEL DR. ESTEVE, S.A.
公开号:EP1595865A1
公开(公告)日:2005-11-16
New spirolactams of formula (I) having a benzodienone moiety and a azetidinone moiety which are highly stable due to pi interactions. They are useful as UV absorbers and as synthetic intermediates.