133704-82-2Relevant academic research and scientific papers
Synthesis and antimicrobial activities of halogenated bis(hydroxyphenyl)methanes
Oh, Ki-Bong,Lee, Ji Hye,Lee, Jong Wook,Yoon, Kyung-Mi,Chung, Soon-Chun,Jeon, Heung Bae,Shin, Jongheon,Lee, Hyi-Seung
scheme or table, p. 945 - 948 (2009/09/06)
A series of halophenols was prepared by the reaction of bis(hydroxyphenyl)methanes with effective halogenating agents such as bromine and sulfuryl chloride. One of these compounds, a biologically active halophenol-2,2′,3,3′-tetrabromo-4,4′,5,5′-tetrahydroxydiphenylmethane (1)-frequently isolated from red algae, was synthesized for the first time. Other halophenols included several novel compounds, together with known derivatives that were synthesized from the phenolic intermediates, bis(3,4-dihydroxyphenyl)methane (5) and bis(2-hydroxyphenyl)methane (14). All of the synthesized compounds were tested for antimicrobial activity against Gram-positive, Gram-negative bacteria and fungi. The preliminary structure-activity relationship was investigated in order to determine the essential structural requirements for their antimicrobial activity. Of all these halophenols, 2,2′,3,3′,6-pentabromo-4,4′,5,5′-tetrahydroxydiphenylmethane (8) was found to be the most active against Candida albicans, Aspergillus fumigatus, Trichophyton rubrum, and Trichophyton mentagrophytes while 3,3′,5,5′-tetrachloro-2,2′-dihydroxydiphenylmethane (18) exerted a powerful antibacterial effect against Staphylococcus aureus, Bacillus subtilis, Micrococcus luteus, Proteus vulgaris, and Salmonella typhimurium.
Herbicidal 12H-dibenzo[d,g][1,3]dioxocin-6-carboxylic acids
-
, (2008/06/13)
12H-Dibenzo[d,g][1,3]dioxocin-6-carboxylic acids having at least one selected substituent in the 1-, 3-, 4-, 8-, 9-, or 11-position, such as 4-chloro-12H-dibenzo[d,g][1,3]dioxocin-6-carboxylic acid, and their agriculturally acceptable salts, esters, and a
