53066-02-7Relevant articles and documents
Pure phosphotriesters as versatile ligands in transition metal catalysis: efficient hydrosilylation of ketones and diethylzinc addition to aldehydes
Bouhachicha,Ngo Ndimba,Roisnel,Lalli,Argouarch
, p. 4767 - 4770 (2017/07/11)
This work aims to highlight the underrated role played by pure phosphotriester (or phosphate) ligands in catalysis, when compared to other phosphorus-containing donors such as phosphane oxides or phosphites. To probe this and to enlarge the very narrow catalytic scope of these Lewis bases, easily accessible mono- and bidentate phosphotriesters were tested as donors in two important transition metal-based catalytic transformations: the zinc-catalyzed hydrosilylation of ketones and the titanium-promoted diethylzinc addition to aldehydes. In both cases, the reactions were successful and the corresponding alcohols were obtained in high yields.
Synthesis, antifungal activity, and molecular modeling studies of new inverted oxime ethers of oxiconazole
Rossello, Armando,Bertini, Simone,Lapucci, Annalina,Macchia, Marco,Martinelli, Adriano,Rapposelli, Simona,Herreros, Esperanza,Macchia, Bruno
, p. 4903 - 4912 (2007/10/03)
Some new oxime ethers of types 7 and 8, in which the methyleneaminoxy group, C=N-O, of oxiconazole 6 is in an inverted atomic sequence, were synthesized and tested for their antifungal activities. Among them, the type 7 compounds, such as the N-ethoxy-morpholino-substituted derivatives 71-o (Table 1), showed good antifungal properties against the Candida strains tested, with minimum inhibitory concentration (MIC) values similar to those of the reference drug 6. A remarkable result was obtained with these types of azoles, which had shown a cidal character against Candida albicans, while the reference drug oxiconazole was only fungistatic in the same tests. This fact may be seen from a comparison of the MIC values with those of the minimum fungicidal concentration (MFC) values for most of the type 7 compounds assayed that have shown differences between the MIC and the MFC, which are lower than three double diluitions. A simple molecular modeling of the P450 14-α-sterol demethylase from C. albicans (Candida P450DM) was built in order to understand how the structural differences between type 7 compounds and oxiconazole 6 can induce different antifungal profiles. The results of this work seem to confirm that it is possible to reverse the atomic sequence of the methyleneaminoxy group, C=N-O, of 6, obtaining new imidazoles possessing good antifungal properties.
