Here, we report the synthesis of all major 2-alkyl-4(1H)-quinolone N-oxide classes of Pseudomonas and Burkholderia, quantification of their native production levels and their antibiotic activities against competing Staphylococcus aureus.
Novel Endoperoxide Antimalarials: Synthesis, Heme Binding, and Antimalarial Activity
作者:Dennis K. Taylor、Thomas D. Avery、Ben W. Greatrex、Edward R. T. Tiekink、Ian G. Macreadie、Peter I. Macreadie、Adam D. Humphries、Martha Kalkanidis、Emma N. Fox、Nectarios Klonis、Leann Tilley
DOI:10.1021/jm0305319
日期:2004.3.1
We report the synthesis of a series of novel epoxy endoperoxide compounds that can be prepared in high yields in one to three steps from simple starting materials. Some of these compounds inhibit the growth of Plasmodium falciparum in vitro. Structure-activity studies indicate that an endoperoxide ring bisubstituted with saturated cyclic moieties is the pharmacophore. To study the molecular basis of
A new type of water insoluble surfactant: molecular aggregation of long chain phosphonium salts (Ph<sub>3</sub>P<sup>+</sup>–CH<sub>2</sub>CH<sub>2</sub>R,I<sup>–</sup>; R = alkyl or fluoroalkyl) in formamide
作者:B. Escoula、N. Hajjaji、I. Rico、A. Lattes
DOI:10.1039/c39840001233
日期:——
The molecular aggregations of various water insoluble substituted phosphonium salts (Ph3P+–CH2CH2R,I–; R = C4H9, C6H13, C8H17, C4F9, C6F13, OR C8F17) are compared and the results show that the salts have surfactant properties.
各种水不溶性的取代鏻盐的分子聚集(PH 3 P + -CH 2 CH 2 R,I - ; R = C 4 H ^ 9,C 6 H ^ 13,C 8 H ^ 17,C 4 ˚F 9,C 6 ˚F比较13,或OR C 8 F 17),结果表明该盐具有表面活性剂性质。
Disclosed is a hydrocarboxylation process for the production of carboxylic acid from olefins wherein an olefin, water, a Group VIII metal hydrocarboxylation catalyst, an onium salt compound are combined in a reaction zone and contacted with carbon monoxide under hydrocarboxylation conditions of pressure and temperature The process does not require or utilize the addition of a hydrogen halide or an alkyl halide exogenous or extraneous to the hydrocarboxylation process.