Total synthesis of chlorinated phenylpyrrole antibiotics, (+)- and (−)-neopyrrolomycins
作者:Kuniaki Tatsuta、Manabu Itoh
DOI:10.1016/s0040-4039(00)61354-0
日期:1993.1
(+)- and (−)-Neopyrrolomycins have been synthesized from 3,5-dichlorophenol through regioselective halogenations and optical resolution.
(+)-和(-)-新吡咯啉素已通过区域选择性卤化和光学拆分从3,5-二氯苯酚合成。
Synthesis and biological evaluation of neopyrrolomycin analogs.
作者:KUNIAKI TATSUTA、MANABU ITOH
DOI:10.7164/antibiotics.47.262
日期:——
Synthesis of oxygenated derivatives of 2,3,7,8-tetrachlorodibenzo-p-dioxin
作者:Sudhir K. Singh、Subodh. Kumar
DOI:10.1021/jf00033a030
日期:1993.9.1
Four monomethoxy, five dimethoxy and four dihydroxy derivatives of polychlorodibenzo-p-dioxin been synthesized, and their physical and spectral properties (NMR and MS) have been reported. The general method for the synthesis of specific mono- and dimethoxy derivatives in reasonable yields has been found to be the condensation of 4,5-dichlorocatechol with appropriately substituted o-chloro-nitrobenzenes. The monomethoxy derivatives thus prepared were demethylated by boron tribromide-dimethyl sulfide. Several mono- and dihydroxypolychlorodibenzo-p-dioxins have been identified as metabolites of the highly toxic environmental contaminant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). However, most of these metabolites have not been fully characterized due to the lack of appropriate standards. The availability of these synthetic oxygenated derivatives of TCDD can be used to establish the structure and the potential toxicity associated with these metabolites.
Procédé de préparation d'anilines métachlorées
申请人:RHONE-POULENC AGROCHIMIE
公开号:EP0015220B1
公开(公告)日:1982-05-12
Procédé de préparation sélective d'anilines métachlorées