Synthesis and algicidal activity of new dichlorobenzylamine derivatives against harmful red tides
作者:Dubok Choi、Sunjong Yu、Seung Ho Baek、Yoon-Ho Kang、Young-Cheol Chang、Hoon Cho
DOI:10.1007/s12257-016-0175-8
日期:2016.6
In the present study, we synthesized 65 dichlorobenzylamine derivatives and investigated their algicidal activity against harmful red tides. The 3,4-dichlorobenzylamine derivatives showed relatively high activity against Cochlodinium polykrikoides, Heterosigma akashiwo, Chattonella marina, and Heterocapsa circularisquama, and the synthesized compounds 27, 28, 33, 34, 35, and 36 showed the highest algicidal activity after 24 h at 0.1 ~ 1.0 μM LC50 against the four harmful algae species. To verify the safety of the compounds, acute ecotoxicology tests using the water flea (Daphnia magna) and zebrafish (Danio rerio) were conducted, and the tests confirmed that compounds 33 and 34 were not harmful because the target organisms showed high survival rates at 15 μM. The results indicate that compounds 33 and 34 are suitable substances for use in controlling harmful algae species.
Synthesis of Trisubstituted Ureas by a Multistep Sequence Utilizing Recyclable Magnetic Reagents and Scavengers
作者:Quirin M. Kainz、Martin Zeltner、Michael Rossier、Wendelin J. Stark、Oliver Reiser
DOI:10.1002/chem.201300358
日期:2013.7.22
secondary amines were converted to trisubstituted (thio)ureas in excellent yields and purities by stirring with an excess of iso(thio)cyanate, which was scavenged by addition of the magnetic amine resin after completion of the reaction. The whole reaction sequence is carried out without any purification apart from magnetic decantation; moreover, conventional magnetic stirring can be used as opposed to
前所未有的磁性硼氢化物交换(mBER),磁性王醛(mWang)和磁性胺树脂是由高磁性聚合物涂层的钴或铁纳米粒子制成的。微波辐射用于获得优异的官能度(> 95%)和负载量(高达3.0 mmol g -1)在15分钟或更短的时间内完成反应。通过专门应用这些磁性树脂合成了一个小的脲和硫脲库。第一步,用mBER进行芳族和脂族醛的还原胺化反应。随后通过mWang选择性清除完成反应所需的过量伯胺。从树脂进行简单的磁性倾析可以得到仲胺,其收率和纯度都非常好。所用的磁性树脂被有效地再生,并再次用于下一次运行。在第二步骤中,通过与过量的异(硫)氰酸酯搅拌,以优异的收率和纯度将仲胺转化为三取代的(硫代)脲,该异氰酸酯在反应完成后通过添加磁性胺树脂来清除。整个反应过程除磁倾析外无需任何纯化即可进行。此外,与聚苯乙烯树脂所需的涡旋相反,可以使用常规的磁力搅拌。
[EN] PROCESS FOR THE PREPARATION OF ENANTIOMERICALLY ENRICHED PROTON PUMP INHIBITORS<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION D'INHIBITEURS DE LA POMPE À PROTONS ENRICHIS DU POINT DE VUE DES ÉNANTIOMÈRES
申请人:LEK PHARMACEUTICALS
公开号:WO2010043601A1
公开(公告)日:2010-04-22
The invention discloses a process for the preparation of compounds having structures typical for proton pump inhibitors in enantiomerically enriched form by using particular metal catalysts in an enantioselective oxidation step. Also disclosed are useful further processes and pure intermediate and subsequently final products.
Aminoalkylphenols, methods of using and making the same
申请人:Dorn P. Conrad
公开号:US20050234265A1
公开(公告)日:2005-10-20
The present invention relates to Mannich base antimalarial aminoalkylphenol compounds and their use against protozoa of the genus
Plasmodium
, particularly emerging strains of drug-resistant Plasmodia. This invention further relates to compositions containing such compounds and a process for making the compounds. This and other aspects of the invention are realized upon review of the entire specification.
Process for the preparation of enantiomerically enriched proton pump inhibitors
申请人:LEK Pharmaceuticals d.d.
公开号:EP2264024A1
公开(公告)日:2010-12-22
The invention discloses a process for the preparation of compounds having structures typical for proton pump inhibitors in enantiomerically enriched form by using particular metal catalysts in an enantioselective oxidation step. Also disclosed are useful further processes and pure intermediate and subsequently final products.