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.
COMPOSITION FOR DESTRUCTION OF MICROALGAE OR SPHAEROCARPUS
申请人:CUREARTH, INC.
公开号:US20180271091A1
公开(公告)日:2018-09-27
The present disclosure relates to a composition for the destruction of microalgae or mosses. The composition for the destruction of microalgae or mosses may suppress the growth and proliferation of microalgae when treated in moss cultivation facilities, marine microalgae cultivation facilities, areas in which green or red tide is occurring, or areas in which green or red tide is expected to occur, thereby preventing damage caused by the green or red tide.
An efficient synthesis of pyrido[2,3-<i>d</i>]pyrimidine derivatives in ionic liquid
作者:Da-Qing Shi、Yao Zhou、Hai Liu
DOI:10.1002/jhet.281
日期:——
A series of 5,7-diarylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-diones was synthesized via the reaction of 6-aminopyrimidine-2,4-dione and α,β-unsaturated ketones in ionicliquid without using any catalyst. This protocol has the advantages of easier work-up, milder reaction conditions, high yields, and environmentally benign procedure over traditional methods. J. Heterocyclic Chem., 2010.
通过6-氨基嘧啶-2,4-二酮与α,β-不饱和基的反应合成了一系列的5,7-二芳基吡啶并[2,3- d ]嘧啶-2,4(1 H,3 H)-二酮。无需使用任何催化剂的离子液体中的酮。与传统方法相比,该方案具有易于处理,反应条件温和,收率高和对环境有益的优点。J.杂环化学.2010。
Chalcones as promising pesticidal agents against diamondback moth (Plutella xylostella): microwave-assisted synthesis and structure–activity relationship
A series of chalcones (A-CH=CH-CO-B) were synthesized under microwave irradiation, and for the first time their pesticidal activity against diamondback moth (Plutella xylostella) was evaluated to identify the promising lead structures. The structure-activity relationship (SAR) analysis revealed that electron-withdrawing substituents on ring A of chalcone provided good pesticidal agents, whereas, ring B can bear either electron-withdrawing or electron-releasing substituents. Moreover, compound 22 having para-Cl substitution on ring A as well on ring B showed maximum activity with LC50 value of 170.24 mu g mL(-1).