Highly regioselective synthesis of 1,7-diprotected 1,4,7,10-tetraazacyclododecane derivatives
作者:Pier Lucio Anelli、Marcella Murru、Fulvio Uggeri、Mario Virtuani
DOI:10.1039/c39910001317
日期:——
Reaction of dimethylformamicle diethyl acetal with monoalkylated 1,4,7,10-tetraazacyclododecane derivatives 3, followed by hydrolysis of the tricyclic intermediates 4, selectively affords 1,7-disubstituted tetraazamacrocycles 5.
INTERMEDIATES FOR CHELATING AGENTS WITH PREFIXED SYMMETRY AND PROCESS FOR THEIR PREPARATION
申请人:BRACCO S.p.A.
公开号:EP0545983B1
公开(公告)日:1994-10-26
US5424423A
申请人:——
公开号:US5424423A
公开(公告)日:1995-06-13
US5539105A
申请人:——
公开号:US5539105A
公开(公告)日:1996-07-23
[EN] INTERMEDIATES FOR CHELATING AGENTS WITH PREFIXED SYMMETRY AND PROCESS FOR THEIR PREPARATION
申请人:BRACCO INDUSTRIA CHIMICA S.P.A.
公开号:WO1992004336A1
公开(公告)日:1992-03-19
(EN) The preparation of compounds of formula (I), wherein R and R1 have the meanings specified in claim 1, is disclosed; compounds (I) are useful intermediates for the preparation of chelating agents.(FR) L'invention décrit la préparation de composés de formule (I) dans laquelle R et R1 ont les significations spécifiées dans la revendication (1); ces composés sont des intermédiaires efficaces pour la préparation d'agents chélatants.