85686-13-1Relevant academic research and scientific papers
Identification of the Ferric-Acinetobactin Outer Membrane Receptor in Aeromonas salmonicida subsp. salmonicida and Structure-Activity Relationships of Synthetic Acinetobactin Analogues
Balado, Miguel,Segade, Yuri,Rey, Diego,Osorio, Carlos R.,Rodríguez, Jaime,Lemos, Manuel L.,Jiménez, Carlos
, p. 479 - 493 (2017)
Aeromonas salmonicida subsp. salmonicida, the causative agent of furunculosis in several fish species, produces acinetobactin and amonabactin as siderophores. In a previous study, we chemically characterized these siderophores and proposed a biosynthetic
The Structure and Synthesis of the Novel Orchid Pigments Dengibsin and Dengibsinin
Sargent, Melvyn V.
, p. 2553 - 2564 (2007/10/02)
The structures of the orchid pigments dengibsin and dengibsinin have been revised to 2,5-dihydroxy-4-methoxy-9H-fluoren-9-one (4) and 3,5-dihydroxy-2,4-dimethoxy-9H-fluoren-9-one (5).The synthesis of these compounds is described.It has been found that 2'-methoxybiphenyl-2-carboxylic acids, on treatment with trifluoroacetic anhydride or oxalyl chloride, undergo cyclization giving 6H-dibenzopyran-6-ones.
STERIC EFFECTS IN THE METALLATION OF ALKOXY- AND DIALKOXY-BENZENES
Bernard, Angela Maria,Piras, Pier Paolo,Plumitallo, Antonio,Melis, Stefana,Sotgiu, Francesca
, p. 443 - 446 (2007/10/02)
With the aim of examining the role of steric factors in determining the position of metallation, the reaction of n-butyllithium with a series of 1,2-dialkoxy-, 1,2-alkylthio-, 1,4-dialkoxy-, and 2-t-butyl-1-alkoxy-benzenes has been studied in the presence and in the absence of N,N,N',N'-tetramethylethylenediamine (TMEDA).Steric factors are particularly relevant in the case of 2-t-butyl-alkoxybenzenes where the yields of metallation dramatically decrease passing from the methoxy to the isopropoxy derivative, while with the t-butoxy derivative only cleavage of the ether bond occurs.
