Synthesis and Fungicidal Evaluation of Novel Chalcone-Based Strobilurin Analogues
作者:Pei-Liang Zhao、Chang-Ling Liu、Wei Huang、Ya-Zhou Wang、Guang-Fu Yang
DOI:10.1021/jf071064x
日期:2007.7.1
good in vivo fungicidal activities against Pseudoperoniospora cubensis and Sphaerotheca fuliginea at the dosage of 200 microg mL(-1). Two compounds, (E)-methyl 2-[2-(3-[(E)-3-(2-chlorophenyl)acryloyl]phenoxy}methyl)phenyl]-3-methoxyacrylate (1e) and (E)-methyl 2-[2-(3-[(E)-3-(3-bromophenyl)acryloyl]phenoxy}methyl)phenyl]-3-methoxyacrylate (1l), were found to display higher fungicidal activities against
Aldehydes undergo smooth conjugateaddition to α,β-unsaturatedketones in the presence of 5-(2-hydroxyethyl)-1,3-thiazolium halides and DBU adsorbed onto the surface of basic alumina under microwave irradiation and solvent-free conditions to afford 1,4-diketones in enhanced yields and reduced reaction times compared to conventional methods.
Disclosed are compounds which have been identified as inhibitors of phosphate transport. Many of the compounds are represented by Structural Formula (I):
Ar
1
—W—X—Y—Ar
2
;
or a pharmaceutically acceptable salt thereof. Ar
1
and Ar
2
are independently a substituted or unsubstituted aryl group or an optionally substituted five membered or six membered non-aromatic heterocylic group fused to an optionally substituted monocylic aryl group. W and Y are independently a covalent bond or a C1-C3 substituted or unsubstituted alkylene group. X is a heteroatom-containing functional group, an aromatic heterocyclic group, substituted aromatic heterocyclic group, non-aromatic heterocyclic group, substituted non-aromatic heterocyclic group, an olefin group or a substituted olefin group. Also disclosed are methods of treating a subject with a disease associated with hyperphosphatemia, as well as a disease mediated by phosphate-transport function. The methods comprise the step of administering an effective amount of the one of the compounds described above.
Biological and structure-activity evaluation of chalcone derivatives against bacteria and fungi
作者:Wender A. Silva、Carlos Kleber Z. Andrade、Hamilton B. Napolitano、Ivo Vencato、Carlito Lariucci、Miriam. R. C. de Castro、Ademir J. Camargo
DOI:10.1590/s0103-50532013000100018
日期:——
The present work describes the antibacterial and antifungal activities of several chalcones obtained by a straight Claisen-Schmidt aldol condensation determined by the minimal inhibitory concentration against different microorganisms (Gram-positive and Gram-negative bacteria and fungi). Solid state crystal structures of seven chalcones were determined by X-ray diffraction (XRD) analysis. Chemometric studies were carried out in order to identify a potential structure-activity relationship.
Solid-phase synthesis of 1,4-diketones by thiazolium salt promoted addition of aldehydes to chalcones
作者:Sadagopan Raghavan、Kancharla Anuradha
DOI:10.1016/s0040-4039(02)00972-3
日期:2002.7
The first report of thiazolium salt promoted Michael addition of aldehydes to chalcones (Stetter reaction) on solid-phase is reported. Reaction conditions have also been devised for cleaving the product 1,4-diketone from the solid-support in good yield and high purity. (C) 2002 Elsevier Science Ltd. All rights reserved.