AsymmetricSimmons-Smithreactions of α,β-unsaturated acetals derived from chiral dialkyl tartrate or (2R,4R)-2,4-pentanediol are described. Treatment of the acetal with diethylzinc and methylene iodide gives a cyclopropane with high diastereoselectivity. The acetal group is readily transformed to the aldehyde or the ester group. In addition, the method is successfully applied to the enantioselective
Soybean Lipoxygenase and Horseradish Peroxidase Catalysed Asymmetric Oxidation-Reduction Sequence for the Synthesis of Chiral (Z,E) Diene-Diols
作者:Jhillu S. Yadav、S. Nanda、A. Bhaskar Rao
DOI:10.1055/s-2001-14907
日期:——
Unnatural synthetic substrates with a properly spaced prosthetic modifier having non-ionic hydroxy terminus undergoes soybeanlipoxygenase catalysed asymmetric peroxidation followed by horseradish peroxidase induced reduction affords (Z, E)-diene-diol in high enantiomeric excess.
Enzymatic asymmetric hydroxylation of unnatural substrates with soybean lipoxygenase
作者:J.S. Yadav、S. Nanda、A.Bhaskar Rao
DOI:10.1016/s0957-4166(01)00381-0
日期:2001.8
terminus undergo asymmetrichydroxylation with soybeanlipoxygenase. The prosthetic modifier supplies the missing structural features needed for enzymatic recognition and controls the regiochemical outcome of the reaction by its high hydrophobic content. The effect of pH on the regiochemistry clearly shows that all the substrates can arrange themselves at the active site of soybeanlipoxygenase in only one
[EN] COMPOUNDS AND COMPOSITIONS FOR INTRACELLULAR DELIVERY OF AGENTS<br/>[FR] COMPOSÉS ET COMPOSITIONS POUR L'ADMINISTRATION INTRACELLULAIRE D'AGENTS THÉRAPEUTIQUES ET/OU PROPHYLACTIQUES
申请人:MODERNATX INC
公开号:WO2017112865A1
公开(公告)日:2017-06-29
The disclosure features amino lipids and compositions involving the same. Nanoparticle compositions include an amino lipid as well as additional lipids such as phospholipids, structural lipids, PEG lipids, or a combination thereof. Nanoparticle compositions further including therapeutic and/or prophylactic agents such as RNA are useful in the delivery of therapeutic and/or prophylactic agents to mammalian cells or organs to, for example, regulate polypeptide, protein, or gene expression.