[EN] SUBSTITUTED PHENYLTETRAZOLE, ITS USE AND PHARMACEUTICAL PREPARATION CONTAINING IT<br/>[FR] PHÉNYLTÉTRAZOLE SUBSTITUÉ, SON UTILISATION ET PRÉPARATION PHARMACEUTIQUE LE CONTENANT
申请人:UNIV KARLOVA
公开号:WO2016091228A1
公开(公告)日:2016-06-16
A nitro group-substituted phenyltetrazole of general formula (I) wherein R is selected from the group consisting of: H, C1-C11 alkyl, phenyl- or phenyl- substituted in positions 2, 3, 4 or 5 by one or more electron-acceptor groups and/or by one or more electron-donor groups. These compounds can be prepared by easy synthesis and have significant activity against mycobacteria including their multidrug resistant strains. The invention provides also a pharmaceutical preparation having nitro group-substituted phenyltetrazole of formula (I) as the active ingredient, as well as the use of this nitro group-substituted phenyltetrazole as antituberculosis drug.
tetrazole (1,5-Tz) in several cases. The regioselectivities (1,5-Tz:2,5-Tz) are highly variable and cannot be exclusively attributed to the steric hindrance of the electrophile. A new rationale to explain the observed regioselectivity, based on the difference in mechanism between first- and second-order nucleophilic substitutions, is thus proposed. In addition, in some cases the intramolecular stabilization
二取代四唑的合成描述了从 1 H -5-单取代四唑通过脂族胺重氮化反应,形成瞬时烷基重氮中间体,充当烷基化剂。尽管 2,5-二取代四唑 (2,5-Tz) 以中等至极好的收率优先形成,但在几种情况下也可以分离出少量的 1,5-二取代四唑 (1,5-Tz)。区域选择性(1,5-Tz:2,5-Tz)是高度可变的,不能完全归因于亲电试剂的空间位阻。因此,基于一级和二级亲核取代之间的机制差异,提出了解释观察到的区域选择性的新原理。此外,在某些情况下,所得重氮的分子内稳定性会影响区域选择性。