Continuous Flow Process For the Synthesis of Phenylhydrazine Salts and Substituted Phenylhydrazine Salts
申请人:SHANGHAI HYBRID-CHEM TECHNOLOGIES
公开号:US20190152896A1
公开(公告)日:2019-05-23
The present invention provided a continuous flow process for the synthesis of phenylhydrazine salts and substituted phenylhydrazine salts. Diazotization, reduction, acidic hydrolysis and salifying with acids are innovatively integrated together. Using acidic liquids of aniline or substituted aniline, diazotization reagents, reductants and acids as raw materials, phenylhydrazine derivative salts is obtained through the synthesis process, which is a three-step continuous tandem reaction including diazotization, reduction, acidic hydrolysis and salifying. The described synthesis process is a kind of integrated solutions, which is carried out in an integrated reactor. The feed inlets of the integrated reactor are continuously filled with raw materials. In the integrated reactor, diazotization, reduction, acidic hydrolysis and salifying are carried out continuously and orderly, and phenylhydrazine salts or substituted phenylhydrazine salts is obtained in the outlet of the integrated reactor without interruption. The total reaction time is no more than 20 min.
A novel and practical palladium-catalyzed aerobic oxyarylthiolation of alkynone O-methyloximes for the assembly of 4-sulfenylisoxazole derivatives using S8 and arylhydrazines as the S-aryl sources is accomplished. In the presence of 0.1 mol% of IPr–Pd–allyl–Cl as the catalyst and O2 (1 atm) as the sole oxidant, both alkynone O-methyloximes and arylhydrazines are suitable substrates, delivering diverse
完成了使用 S 8和芳基肼作为S-芳基源组装 4-亚磺基异恶唑衍生物的新型实用钯催化的炔酮O-甲基肟的需氧氧芳基硫醇化反应。在 0.1 mol% IPr-Pd-allyl-Cl 作为催化剂和 O 2 (1 atm) 作为唯一氧化剂的情况下,炔酮O-甲基肟和芳基肼都是合适的底物,可在中等至良好的产量和良好的官能团耐受性。值得注意的是,苯基重氮盐和苯基亚磺酸钠也是合适的芳基化试剂,为获得结构多样的 4-亚磺基异恶唑提供了一种替代合成策略。
[EN] FUSED DIHYDROINDAZOLE DERIVATIVES HAVING MULTIMODAL ACTIVITY AGAINST PAIN<br/>[FR] DÉRIVÉS DE DIHYDROINDAZOLE FUSIONNÉS AYANT UNE ACTIVITÉ MULTIMODALE CONTRE LA DOULEUR
申请人:ESTEVE PHARMACEUTICALS SA
公开号:WO2020016315A1
公开(公告)日:2020-01-23
The present invention relates to fused dihydroindazole derivatives having pharmacological activity towards the α2δ subunit, in particular the α2δ subunit, of the voltage-gated calcium channel. It also relates to compounds having dual pharmacological activity towards both the α2δ subunit, in particular the α2δ subunit, of the voltage-gated calcium channel and the δ1 receptor. The present invention also relates to processes of preparation of such compounds, to pharmaceutical compositions comprising them, and to their use in therapy, in particular for the treatment of pain.
Synthesis and biological evaluation of novel <i>N</i>-(piperazin-1-yl)alkyl-1<i>H</i>-dibenzo[<i>a</i>,<i>c</i>]carbazole derivatives of dehydroabietic acid as potential MEK inhibitors
In this paper, a series of novel 1H-dibenzo[a,c]carbazole derivatives of dehydroabietic acid bearing different N-(piperazin-1-yl)alkyl side chains were designed, synthesised and evaluated for their in vitro anticancer activities against three human hepatocarcinoma cell lines (SMMC-7721, HepG2 and Hep3B). Among them, compound 10g exhibited the most potent activity against three cancer cell lines with