Synthesis and biological evaluation of novel cYY analogues targeting Mycobacterium tuberculosis CYP121A1
摘要:
The rise in multidrug resistant (MDR) cases of tuberculosis (TB) has led to the need for the development of TB drugs with different mechanisms of action. The genome sequence of Mycobacterium tuberculosis (Mtb) revealed twenty different genes coding for cytochrome P450s. CYP121A1 catalyzes a C-C crosslinking reaction of di-cyclotyrosine (cYY) producing mycocyclosin and current research suggests that either mycocyclosin is essential or the overproduction of cYY is toxic to Mtb. A series of 1,4-dibenzyl-2-imidazol-1-yl-methylpiperazine derivatives were designed and synthesised as cYY mimics. The derivatives substituted in the 4-position of the phenyl rings with halides or alkyl group showed promising antimycobacterial activity (MIC 6.25 mu g/mL), with the more lipophilic branched alkyl derivatives displaying optimal binding affinity with CYP121A1 (Pr-i K-D = 1.6 mu M; Bu-t K-D = 1.2 mu M). Computational studies revealed two possible binding modes within the CYP121A1 active site both of which would effectively block cYY from binding.
Reversible Aminal Formation: Controlling the Evaporation of Bioactive Volatiles by Dynamic Combinatorial/Covalent Chemistry
作者:Barbara Buchs née Levrand、Guillaume Godin、Alain Trachsel、Jean-Yves de Saint Laumer、Jean-Marie Lehn、Andreas Herrmann
DOI:10.1002/ejoc.201001433
日期:2011.2
aqueous solutions. Kinetic rate constants and equilibrium constants for the formation and hydrolysis of aminals were determined. The performance of dynamic mixtures as delivery systems for perfumery ingredients was tested after deposition onto cotton, and the long-lastingness of fragrance evaporation was investigated by dynamic headspace analysis against a reference sample. The simplicity of the concept
Preparation of a series of Ru(<scp>ii</scp>) complexes with N-heterocyclic carbeneligands for the catalytic transfer hydrogenation of aromatic ketones
作者:Nevin Gürbüz、Emine Özge Özcan、İsmail Özdemir、Bekir Çetinkaya、Onur Şahin、Orhan Büyükgüngör
DOI:10.1039/c1dt11203a
日期:——
[RuCl2(p-cymene]2 with Ag–N-heterocyclic carbene (NHC) complexes yields a series of [(p-cymene)Ru(NHC)] complexes (2a–f). All synthesised compounds were characterized by elemental analysis, NMR spectroscopy and the molecular structure of 2a was determined by X-ray crystallography. All complexes have been tested as catalysts for the transferhydrogenation of aromatic ketones, showing excellent activity in this reaction
CONTROLLED RELEASE OF ACTIVE ALDEHYDES AND KETONES FROM EQUILIBRATED DYNAMIC MIXTURES
申请人:Herrmann Andreas
公开号:US20100098650A1
公开(公告)日:2010-04-22
The present invention concerns a dynamic mixture obtained by combining, in the presence of water, at least one diamine derivative that includes at least one benzylamine moiety, with at least one active aldehyde or ketone. The inventive mixture is capable of releasing in a controlled and prolonged manner the active compound, in particular those that are perfuming ingredients, into the surrounding environment.
[EN] CONTROLLED RELEASE OF ACTIVE ALDEHYDES AND KETONES FROM EQUILIBRATED DYNAMIC MIXTURES<br/>[FR] LIBÉRATION CONTRÔLÉE D'ALDÉHYDES ET DE CÉTONES ACTIFS DE MÉLANGES DYNAMIQUES ÉQUILIBRÉS
申请人:FIRMENICH & CIE
公开号:WO2008093272A2
公开(公告)日:2008-08-07
[EN] The present invention concerns a dynamic mixture obtained by combining, in the presence of water, at least one diamine derivative, comprising at least one benzylamine moiety, with at least one active aldehyde or ketone. The invention's mixture is capable of releasing in a controlled and prolonged manner said active compound, in particular perfuming ingredients, in the surrounding environment. [FR] La présente invention concerne un mélange dynamique obtenu par combinaison, en présence d'eau, d'au moins un dérivé diamine, comprenant au moins une fraction benzylamine, avec au moins un aldéhyde ou une cétone actifs. Le mélange de l'invention est capable de libérer de manière contrôlée et prolongée ledit composé actif, en particulier des ingrédients parfumants, dans l'environnement.
Synthesis and biological evaluation of novel cYY analogues targeting Mycobacterium tuberculosis CYP121A1
作者:Safaa M. Kishk、Kirsty J. McLean、Sakshi Sood、Mohamed A. Helal、Mohamed S. Gomaa、Ismail Salama、Samia M. Mostafa、Luiz Pedro S. de Carvalho、Andrew W. Munro、Claire Simons
DOI:10.1016/j.bmc.2019.02.051
日期:2019.4
The rise in multidrug resistant (MDR) cases of tuberculosis (TB) has led to the need for the development of TB drugs with different mechanisms of action. The genome sequence of Mycobacterium tuberculosis (Mtb) revealed twenty different genes coding for cytochrome P450s. CYP121A1 catalyzes a C-C crosslinking reaction of di-cyclotyrosine (cYY) producing mycocyclosin and current research suggests that either mycocyclosin is essential or the overproduction of cYY is toxic to Mtb. A series of 1,4-dibenzyl-2-imidazol-1-yl-methylpiperazine derivatives were designed and synthesised as cYY mimics. The derivatives substituted in the 4-position of the phenyl rings with halides or alkyl group showed promising antimycobacterial activity (MIC 6.25 mu g/mL), with the more lipophilic branched alkyl derivatives displaying optimal binding affinity with CYP121A1 (Pr-i K-D = 1.6 mu M; Bu-t K-D = 1.2 mu M). Computational studies revealed two possible binding modes within the CYP121A1 active site both of which would effectively block cYY from binding.