Daniellic acid

The structure of 7-hydroxyhedychenone (5), extracted from Hedychium spicatum, was derived by spectroscopic methods. The butenolide corresponding to daniellic acid has been obtained from Pamburus missionis (Rutaceae). Potamogetonin (6) is a new furanoid diterpenoid which has been obtained from Potamogeton ferrugineus... 

In continuing their previous work Bougault and Daniel observed that thiosemicarbazones of a-keto acids (51) also undergo a cyclization resulting in 3-thioxo-5-oxo-2,3,4,5-tetrahydro-l,2,4-triazines (52). In contrast with the cyclization of semicarbazones this cyclization... 

The first known pseudo-hexose, pseudo-a-DL-toZopyranose (34) was prepared by reduction of the keto-acid monoacetate (30) 26, 27). This intermediate, which had been used by Daniels, Doshi, and Smissman (9, JO) for a synthesis of shikimic acid, is prepared from the Diels-Alder adduct (31) of 2-acetoxyfuran and maleic anhydride, by a remarkable series of transformations. 

Epoxidation of olefins with meta-chloroperbenzoic acid, (MCPBA) remains to this day among the most widely used methods for research-scale applications [16], Discovered by Nikolai Prilezahev in 1909 [17], it became popular only decades later, mostly through the works of Daniel Swern in the 1940s [18]. Despite its simplicity, and not unlike most epoxidation methods in use today, it suffers from undesired epoxide opening caused by the slight acidity of the reaction milieu. Although acid-catalyzed side reactions can sometimes be minimized by use of buffered systems... 

No 2 Nitroline 30, Cellulosa 10, K nitrate 20, K chlorate 20, sawdust 10 and peaflour 10%. Cellulosa is prepd by nitrating 3p of peaflour with a mixed acid contg nitric (5p) and sulfuric (lOp) acids. These expls were sometimes called American Vigorines Ref Daniel (1902), 72-3 785... 

Nordenfelt and Meurling Powder. A propint, patented in Engl in 1884, prepd as follows Cotton or other cellulosic material, was transformed into a material resembling hydrocellulose thru treatment with hydrochloric acid. It was then dried, pulverized, and mixed with S disd in carbon disulfide. After evapn of the CS2, the material was treated with a coned soln of K nitrate, granulated and dried Ref Daniel (1902), 583... 

Oxalate Blasting Powders. Mining safety expls invented in Eng) by Greaves and Hann in 1897— 98 and manufd by the Oxalate Blasting Powder Co at Gatebeck (Westmoreland), which later became the Nitrates Explosives Co, Ltd. These expls were a modification of BlkPdr in which sulfur was partially or entirely replaced by one or more of the following oxalic acid, oxalates of Aram, K or Na (simple or double), borax, boric acid, etc, each of which could contain w of hydration. The purpose of these substitutions was to obtain expls with a cool flame, so that they could be safely used in gaseous mines Refs 1) Daniel (1902), 592-3 2) Cond-... 

Pel Her Resine Explosible. A Fr expl invented in 1886, with a brownish color, resembling a resin in appearance. It was prepd by the nitration of sugar with mixed nitric-sulfuric acids Ref Daniel (1902), 603... 

A percarbonate possesses, according to Daniel (Ref 1), some expl properties because it can be detonated if a sufficiently powerful detonator is used. According to Mellor (Ref 2, p 86), a violent reaction took place when a soln of 0.5g of solid phosphoric acid, some ether, and a few drops of w were added to 2g of K percarbonate. It was used by Turpin in Fr in expl mixts, ie, Pyrodialytes (qv) (Ref 1)... 

Pyroxalam. The name given by Uchatius in the 1830 s to a white powder obtained by nitrating starch with a mixt of nitric and sulfuric acids, and which contained about 11.1% N. It was Nitrostarch (see in this Vol) with the formula C2 4H320l2(0N02)8, and closely resembled a product previously prepd (1832) by Braconnot by treating starch with neat coned nitric acid Ref Daniel (1902), 459, under Nitramidon... 

Daniel FB, DeAngelo AB, Stober JA, et al. 1992. Hepatocarcinogenicity of chloral hydrate, 2-chloroacetaldehyde, and dichloroacetic acid in the male B6C3F, mouse. Fundam Appl Toxicol 19 159-... 

He A, T Li, L Daniels, I Fotheringham, JPN Rosazza (2004) Nocardia sp. carboxylic acid reductase cloning, expression, and characterization of a new aldehyde oxidoreductase family. Appl Environ Microbiol 70 1874-1881. 

Gintautas PA, SR Daniel, DL Macalady (1992) Phenoxyalkanoic acid herbicides in municipal landfill leachates. Environ Sci Technol 26 517-521. 

Daniels M, Hauswirth W (1971) Fluorescence of the purine and pyrimidine bases of the nucleic acids in neutral aqueous solution at 300 K. Science 171 675... 

H Daniel, B Neugebauer, A Kratz, G Rehner. Localization of acid microclimate along intestinal villi of rat jejunum. Am J Physiol 248 G293-G298, 1985. 

Econamine A process for removing acid gases from natural gas by selective absorption in diglycolamine (also called [2-(2-aminoethoxy) ethanol], and DGA). Developed by the Fluor Corporation, the El Paso Natural Gas Company, and the Jefferson Chemical Company and widely used. Later versions, developed by Fluor Daniel International, include the Fluor Daniel Econamine and the Econamine FG processes. More than 30 units were operating in 1996. See also Aromex. 

Bernatowicz MS, Daniels SB, Koster H (1989) A comparison of acid-labile linkage agents for the synthesis of peptide C-terminal amides. Tetrahedron Lett 30 4645-4648... 

Nitrogen (N, [He]2s22/ 3), symbol and name after the Greek words vi/rpov stvo— par (nitre forming) because it is a constituent of nitric acid and nitrates. Discovered (1772) by Daniel Rutherford. 

F. Doring, J. Walter, J. Will, M. Focking, M. Boll, S. Amasheh, W. Clauss, and H. Daniel. Delta-aminolevulinic acid transport by intestinal and renal peptide transporters and its physiological and clinical implications../ Clin Invest 101 2761— 2767 (1998). 

Venkitasubramanian, P., Daniels, L. and Rosazza, J.P.N., Biocatalytic reduction of carboxylic acids mechanism and application. In Biocatalysis in the Pharmaceutical and Biotechnology Industries, Patel, R. (ed). CRC Press LLC Boca Raton, FL, 2006, pp. 425-440. 

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