15909-76-9Relevant articles and documents
Synthesis of Alkyl (+/-)-2,3-Di-O-acylglycerates and Attempts Directed to their Conversion into Alkyl (R)-2,3-Di-O-acylglycerates by Enzyme-catalyzed Enantioselective Deacylation Reactions
Schick, H.,Schroetter, E.,Szymanowski, M.,Knoll, A.
, p. 628 - 632 (1993)
By screening several lipases and proteases as catalysts for an enantioselective partial deacylation of methyl (+/-)-2,3-di-O-acylglycerates, it was found that methyl (R)-2,3-di-butanoylglycerate can be obtained with an enantiomeric excess of >96percent and a yield of 20percent related to the racemic starting material.This was prepared from methyl acrylate through dihydroxylation with potassium permanganate at -30 deg C and a subsequent bisacylation.
Characterization of QmnD3/QmnD4 for double bond formation in quartromicin biosynthesis
Wu, Long-Fei,He, Hai-Yan,Pan, Hai-Xue,Han, Li,Wang, Renxiao,Tang, Gong-Li
, p. 1578 - 1581 (2014)
In this work, two enzymes responsible for the biogenesis of possible [4 + 2] reaction precursors in the quartromicin biosynthetic pathway were characterized: acetylation of 1 to yield 2 was catalyzed by QmnD3, and subsequent acetic acid elimination of 2 to form double bond product 3 was catalyzed by QmnD4. Site-directed mutagenesis assay of QmnD3 and QmnD4 was investigated, and a general base-catalyzed mechanism for QmnD4 is proposed.
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Groocock,Ingold,Jackson
, p. 1047,1054 (1930)
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Aromatic Donor-Acceptor Interaction-Based Co(III)-salen Self-Assemblies and Their Applications in Asymmetric Ring Opening of Epoxides
Liang, Jian,Soucie, Luke N.,Blechschmidt, Daniel R.,Yoder, Aaron,Gustafson, Addie,Liu, Yu
supporting information, p. 513 - 518 (2019/01/14)
Aromatic donor-acceptor interaction as the driving force to assemble cooperative catalysts is described. Pyrene/naphthalenediimide functionalized Co(III)-salen complexes self-assembled into bimetallic catalysts through aromatic donor-acceptor interactions and showed high catalytic activity and selectivity in the asymmetric ring opening of various epoxides. Control experiments, nuclear magnetic resonance (NMR) spectroscopy titrations, mass spectrometry measurement, and X-ray crystal structure analysis confirmed that the catalysts assembled based on the aromatic donor-acceptor interaction, which can be a valuable noncovalent interaction in supramolecular catalyst development.
Concise Asymmetric Synthesis of Kweichowenol A
Konrad, David B.,Kicin, Bilal,Trauner, Dirk
supporting information, p. 383 - 386 (2019/02/26)
An asymmetric 11-step synthesis of the polyoxygenated cyclohexene natural product kweichowenol A from the traditional Chinese medicinal herb Uvaria kweichowesis is reported. The oxygenation pattern was installed on a linear precursor by exploiting the acyclic stereocontrol of the Kiyooka aldol reaction, as well as Cram chelate-controlled Grignard reactions. Ring-closing metathesis and a selective benzoylation then gave the natural product.