191613-05-5Relevant academic research and scientific papers
Synthesis of C3 heteroatom-substituted azetidinones that display potent cholesterol absorption inhibitory activity
McKittrick, Brian A.,Ma, Ke,Huie, Keith,Yumibe, Nathan,Davis Jr., Harry,Clader, John W.,Czarniecki, Michael,McPhail, Andrew T.
, p. 752 - 759 (1998)
The C3 phenylpropyl side chain N-phenylazetidinones related to SCH 56524 was modified by replacing the hydroxymethylene with various isoelectronic or isosteric groups. Modifications at the 3' position led to less-active compounds; however, modifications a
Stereoselective Visible-Light Catalyzed Cyclization of Bis(enones): A Viable Approach to the Synthesis of Enantiomerically Enriched Cyclopentane Rings
Medici, Fabrizio,Resta, Simonetta,Presenti, Piero,Caruso, Lucia,Puglisi, Alessandra,Raimondi, Laura,Rossi, Sergio,Benaglia, Maurizio
supporting information, p. 4521 - 4524 (2021/06/12)
Photoredox catalytic cyclization of aryl enones in the presence of visible light, promoted either by metals or organic dyes, represent a valuable strategy for the synthesis of cycloalkanes. The development of a stereoselective version of such transformation, in the presence of the metal-free catalyst Eosin Y was studied, with the aim to realize an efficient protocol for the in-flow synthesis of enantiomerically enriched functionalized cyclopentane rings, taking advantage of the flow reactors technology. The use of a chiral auxiliary on the bisenone to be cyclized offers a straightforward and convenient option to exert a stereocontrol on the light-driven cyclization. By exploiting Evans’ oxazolidinones, the stereoselective light-driven cyclization affords, after the removal of the chiral auxiliary, a functionalized 1,2-trans cyclopentane ring in up to 83/17 enantiomeric ratio. When the reaction was performed in continuo, in a homemade coil photoreactor, high yields were observed. The cyclization was also successfully realized in a 3D-printed mesoreactor, without any change in the diastereoseletctivity of the process.
Synthesis and characterization of novel chiral imidazolium and pyridinium ionic liquids derived from tartaric acid and 2-oxazolidinone
Nehate, Sagar P.,Godbole, Himanshu M.,Singh, Girij P.,Mathew, Jessy E.,Shenoy, Gautham G.
supporting information, p. 1173 - 1180 (2019/04/05)
Novel chiral imidazolium and pyridinium ionic liquids based on tartaric acid and 2-oxazolidinone were designed. Symmetrical dicationic ionic liquids based on tartaric acid have been synthesized and characterized. These chiral ionic liquids were designed b
METHOD FOR PRODUCING OPTICALLY ACTIVE CYCLIC AMINE DERIVATIVE OR SALT THEREOF
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Paragraph 0072, (2018/12/05)
PROBLEM TO BE SOLVED: To provide a novel method for producing an optically active imidazole derivative having strong analgesic action on neuropathic pain, fibromyalgia or the like. SOLUTION: The present invention provides a method for producing an optically active imidazole derivative or a salt thereof comprising the following three steps (where, A is dialkylamino or 4-alkylpiperazine-1-yl group-substituted piperidinyl or pyrrolidinyl group; R1 is phenyl group, benzyl group or isopropyl group; R2 is fluorine-substitutable methyl or ethyl group; R4 is C1-3 alkyl group or the like). SELECTED DRAWING: None COPYRIGHT: (C)2019,JPOandINPIT
1-BIARYLAZETIDINONE DERIVATIVES
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Page/Page column 28, (2009/12/27)
The object of the present invention is to provide a compound having an excellent cholesterol-lowering effect and to provide a drug for the treatment, prevention of onset, or prevention of progress of lipid metabolism disorder, hyperlipidemia, or atheroscl
