通式为C 6 H 5 C n H 2 n NH 3)2 M Cl 4的化合物,其中n= 1至10;M = Cd,Cu,Zn和Co; 制备并通过差示扫描量热法表征。用n制备的所有化合物观察到> 1经历了固-固相变,并且固-固相变的高熵表明在高温相中存在相当多的无序。热力学结果的相似性将化合物分为两组:Cd和Cu衍生物以及Co和Zn衍生物。每组内以及各组之间的趋势可归因于苯基基团堆积对热力学行为的影响。
Benzoxazolone Carboxamides as Potent Acid Ceramidase Inhibitors: Synthesis and Structure–Activity Relationship (SAR) Studies
摘要:
Ceramides are lipid-derived intracellular messengers involved in the control of senescence, inflammation, and apoptosis. The cysteine amidase, acid ceramidase (AC), hydrolyzes these substances into sphingosine and fatty acid and, by doing so, regulates their signaling activity. AC inhibitors may be useful in the treatment of pathological conditions, such as cancer, in which ceramide levels are abnormally reduced. Here, we present a systematic SAR investigation of the benzoxazolone carboxamides, a recently described class of AC inhibitors that display high potency and systemic activity in mice. We examined a diverse series of substitutions on both benzoxazolone ring and carboxamide side chain. Several modifications enhanced potency and stability, and one key compound with a balanced activity stability profile (14) was found to inhibit AC activity in mouse lungs and cerebral cortex after systemic administration. The results expand our arsenal of AC inhibitors, thereby facilitating the use of these compounds as pharmacological tools and their potential development as drug leads.
Borrowing hydrogen methodology for the conversion of alcohols into N-protected primary amines and in situ deprotection
作者:Gareth W. Lamb、Andrew J.A. Watson、Katherine E. Jolley、Aoife C. Maxwell、Jonathan M.J. Williams
DOI:10.1016/j.tetlet.2009.02.129
日期:2009.7
Alcohols have been converted into a range of protected amines including sulfonamides and N-alkylbenzylamine derivatives. Representative examples of deprotection to afford primary amines are also provided.
[EN] BENZOXAZOLONE DERIVATIVES AS ACID CERAMIDASE INHIBITORS, AND THEIR USE AS MEDICAMENTS<br/>[FR] DÉRIVÉS DE BENZOXAZOLONE EN TANT QU'INHIBITEURS DE LA CÉRAMIDASE ACIDE, ET LEUR UTILISATION COMME MÉDICAMENTS
申请人:FOND ISTITUTO ITALIANO DI TECNOLOGIA
公开号:WO2015173168A1
公开(公告)日:2015-11-19
The present invention relates to benzoxazolone derivatives as acid ceramidase inhibitors, pharmaceutical compositions containing these inhibitors and methods of inhibiting acid ceramidase for the treatment of disorders in which modulation of the levels of ceramide is clinically relevant. The invention also provides benzoxazolone derivatives for use as a medicament in the treatment of cancer, inflammation, pain, inflammatory pain or pulmonary diseases.
[EN] SUBSTITUTED BENZOXAZOLONE DERIVATIVES AS ACID CERAMIDASE INHIBITORS, AND THEIR USE AS MEDICAMENTS<br/>[FR] DÉRIVÉS DE BENZOXAZOLONE SUBSTITUÉS COMME INHIBITEURS DE LA CÉRAMIDASE ACIDE, ET LEUR UTILISATION COMME MÉDICAMENTS
申请人:FOND ISTITUTO ITALIANO DI TECNOLOGIA
公开号:WO2015173169A1
公开(公告)日:2015-11-19
The present invention relates to substituted benzoxazolone derivatives as acid ceramidase inhibitors, pharmaceutical compositions containing these inhibitors and methods of inhibiting acid ceramidase for the treatment of disorders in which modulation of the levels of ceramide is clinically relevant. The invention also provides substituted benzoxazolone derivatives for use in the treatment of cancer, inflammation, pain, inflammatory pain or pulmonary diseases.
Benzoxazolone derivatives as acid ceramidase inhibitors, and their use as medicaments
申请人:FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA
公开号:US10226452B2
公开(公告)日:2019-03-12
The present invention relates to benzoxazolone derivatives as acid ceramidase inhibitors, pharmaceutical compositions containing these inhibitors and methods of inhibiting acid ceramidase for the treatment of disorders in which modulation of the levels of ceramide is clinically relevant. The invention also provides benzoxazolone derivatives for use as a medicament in the treatment of cancer, inflammation, pain, inflammatory pain or pulmonary diseases.
We present the first example of Au-catalyzed reduction of nitriles into primary amines. In contrast to monohydrosilanes which are completely unreactive, diethylsilane (a dihydrosilane) is capable of reducing aryl or alkyl nitriles into primary amines under catalysis by Au nanoparticles supported on TiO2, via a smooth double hydrosilylation pathway. The produced labile N-disilylamines are readily deprotected
我们提出了金催化将腈还原成伯胺的第一个例子。与完全不反应的一氢硅烷相比,二乙基硅烷(一种二氢硅烷)能够在 TiO 2负载的 Au 纳米颗粒的催化下,通过平滑的双氢化硅烷化途径将芳基或烷基腈还原为伯胺。产生的不稳定的N-二甲硅烷基胺很容易被Et 2 O中的HCl脱保护,以非常好的至极好的产率形成相应胺的盐酸盐。该催化剂至少可在连续 5 次运行中回收和重复使用。