Revised Structure of the Fungal Germination Self-Inhibitor Gloeosporone
作者:Walter L. Meyer、W. Bernd Schweizer、Albert K. Beck、Werner Scheifele、Dieter Seebach、Stuart L. Schreiber、Sarah E. Kelly
DOI:10.1002/hlca.19870700203
日期:1987.3.18
Gloeosporone, the germinationself-inhibitor from the fungus Colletotrichum gloeosporioides f.sp. jussiaea, is shown by spectroscopic data and X-ray analysis to have the constitution and relative configuration as shown in Formula2 (either (1S,6R,12R)-1-hydroxy-6-pentyl-5,15-dioxabicyclo[10.2.1]pentadecan-4,13-dione or its enantiomer), rather than the previously assigned constitution 1.
[EN] COMPOSITIONS AND METHODS FOR THE TREATMENT OF UREA CYCLE DISORDERS AND HEPATIC DISEASES<br/>[FR] COMPOSITIONS ET MÉTHODES POUR LE TRAITEMENT D'ANOMALIES DU CYCLE DE L'URÉE ET DE MALADIES HÉPATIQUES
申请人:RAO M SURYA
公开号:WO2017090007A1
公开(公告)日:2017-06-01
The compositions and compounds of formula I, formula II, formula III which includes a molecular conjugate with ornithine or its polymorphs, enantiomers, stereoisomers, solvates, and hydrates thereof. These salts may be formulated as pharmaceutical compositions. The pharmaceutical compositions may be formulated for oral, buccal, rectal, topical, transdermal, transmucosal, intravenous, parenteral administration, syrup, or injection administration. Such compositions may be used to the treatment of urea cycle disorders and hepatic diseases or its associated complications.
Oxidative cleavage of 2-substituted cycloalkane-1,3-diones and of cyclic β-ketoesters by copper perchlorate / oxygen
作者:J. Cossy、D. Belotti、V. Bellosta、D. Brocca
DOI:10.1016/0040-4039(94)88083-2
日期:1994.8
A preparative method for the synthesis of (ω-1), ω-dioxocarboxylic acids and (ω-1)-oxoalkanedioic acids monoesters by respective oxidativecleavage of 2-substitutedcycloalkane-1,3-diones and cyclicβ-ketoesters, by copperperchlorate in acetonitrile in an oxygen atmosphere, is reported.
Process for preparation of alpha-ketoglutaric acid
申请人:Zhang Guoji
公开号:US20120095261A1
公开(公告)日:2012-04-19
A process for preparation of α-ketoglutaric acid, which is adapted for preparing L-arginine α-ketoglutarate 1:1 and 2:1, comprising the steps of: (a) reacting methyl dichloroacetate and acrylic acid methyl ester with sodium methoxide to obtain dimethyl 2,2-dichloroglutarate; (b) reacting the dimethyl 2,2-dichloroglutarate from step (a) with hydroxide solution to obtain crude α-ketoglutaratic acid aqueous solution; (c) purifying the crude α-ketoglutaratic acid aqueous solution to obtain purified α-ketoglutaratic acid aqueous solution; and (d) adjusting a concentration of the purified α-ketoglutaratic acid aqueous solution by adding water, thereby a yield of the purified α-ketoglutaratic acid aqueous solution is approximately 75%. While avoiding the use of massive organic solvents, the process of the present invention has a remarkable high yield to realize mass production with low manufacturing cost and shortened production time.