In the chemistry of polyfunctionalized organic compounds, protecting groups that can undergo mild and selective cleavage while still being stable during the entire synthetic sequence are often required. In this work, we present a straightforward conversion of the robust p-chlorobenzyl ether into the more labile and well-described p-methoxybenzyl ether using palladium catalysis. This reaction wa...

Preliminary phytochemical screening of petroleum ether and alcohol extract of Symplocos Racemosa Roxb was carried out which indicates that alcoholic extract contain carbohydrate, glycoside, saponin and terpenoid & alkaloid and ether extract indicated presence of glycoside, phytosterol and steroid. An antibacterial evaluation of the petroleum ether and ethanolic extract was carried out and it is...

BACKGROUND Ether phospholipids are abundant membrane constituents present in electrically active tissues (e.g., heart and the brain) that play important roles in cellular function. Alterations of ether phospholipid molecular species contents are associated with a number of genetic disorders and human diseases. METHODOLOGY/PRINCIPAL FINDINGS Herein, the power of shotgun lipidomics, in combinat...

PUBLICATIONS on the history of anesthesia may have an image of a photograph, engraving, or painting of early ether anesthesia in Boston, Massachusetts. Closer inspection of the photographs in various publications reveals that there are five known photographs that were taken in the original amphitheater (now called the Ether Dome) at Massachusetts General Hospital (MGH). Four photographs (figs. ...

Rapid induction of ether anesthesia is desirable for the reason that the prolongation of the subanesthetic stages is detrimental to the subject. In order to induce rapid anesthesia it is the practice to administer a concentration of ether vapor much higher than that necessary to maintain fully developed anesthesia. This procedure requires skill upon the part of the anesthesist; it also results ...

The acid-catalyzed hydrolysis of the alpha,-unsaturated ether group of two plasmalogens, lysophosphatidal choline and lysophosphatidal ethanolamine, and several model compounds (isobutyl vinyl ether, 1-butenyl ethyl ether, and dihydropyran) was studied by determining the true second-order rate constants. The results indicate that the chemical reactivity of the substituted vinyl ether group in p...