128237-30-9Relevant academic research and scientific papers
Method for preparing of chiral intermediate and method for the preparing of HMG-CoA reductase inhibitor using chiral intermadiate
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Paragraph 0177-0178, (2017/03/08)
Chiral compounds and manufacturing method of the present invention refers to using the same manufacturing method relates to number of HMG-COa reduction inhibitors, more specifically an HMG-COa-reduction inhibitors number jaws statin compound in number of chiral intermediates that can be used a reaction steps, mild, and endangering a simple method and in high yield and purity can be under trillion number, purity statin compound is mirror number under trillion number on a commercial scale in can manufacturing method and [...] compounds using the same number of HMG-COa reduction inhibitors relates to manufacturing method. (by machine translation)
Ruthenium-catalyzed asymmetric hydrogenation of 3-oxoglutaric acid derivatives: A study of unconventional solvent and substituent effects
Li, Wanfang,Tao, Xiaoming,Ma, Xin,Fan, Weizheng,Li, Xiaoming,Zhao, Mengmeng,Xie, Xiaomin,Zhang, Zhaoguo
, p. 16531 - 16539 (2013/02/22)
A series of 3-oxoglutaric acid derivatives have been hydrogenated in different solvents in the presence of [RuCl(benzene)(S)-SunPhos]Cl (SunPhos=(2,2,2′,2′-tetramethyl-[4,4′-bibenzo[d][1,3]dioxole] -5,5′-diyl)bis(diphenylphosphine)). Unlike simple β-keto acid derivatives, these advanced analogues can be readily hydrogenated in uncommon solvents such as THF, CH2Cl2, acetone, and dioxane with high enantioselectivities. Two possible catalytic cycles have been proposed to explain the different reactivities of these 1,3,5-tricarbonyl substrates in the tested solvents. The C-2 and C-4 substituents had notable but irregular influence on the reactivity and enantioselectivity of the reactions. More pronounced solvent effects were observed: the ee values increased from around 20 % in EtOH or THF to 90 % in acetone. Inversion of the product configuration was observed when the solvent was changed from EtOH to THF or acetone, and a mixed solvent system can lead to better enantioselectivity than a single solvent. Pronounced solvent effects: 3-Oxoglutaric acid derivatives have been hydrogenated in various solvents with high enantioselectivities (see scheme). Inversions of the product configuration were observed when the solvent was changed. Mixed solvent systems can give better enantioselectivities than a single solvent.
A Practical Synthesis of (R) and (S) 3-Hydroxyglutaric Acid Monoesters by Enzymatic Hydrolysis with a Bacterial Esterase
Monteiro, Julieta,Braun, Jacques,Goffic, Francois Le
, p. 315 - 319 (2007/10/02)
The hemihydrolysis of diethyl-3-hydroxyglutarate with an industrial enzyme, "Esterase 30 000", in a biphasic system allows an efficient enantioselective synthesis of (R) and (S) 3-hydroxyglutaric acid ethyl and t-butyl monoesters in large scale and with excellent yield.
