Enantioselectiveepoxidation of unfunctionalizedolefins with combined use of molecular oxygen, an oxidant, and pivalaldehyde, a reductant, was demonstrated in the presence of a catalytic amount of...
结合使用分子氧、氧化剂和新戊醛(一种还原剂)对未官能化烯烃的对映选择性环氧化反应在催化量的...
Sustainable Flow Oppenauer Oxidation of Secondary Benzylic Alcohols with a Heterogeneous Zirconia Catalyst
作者:Rajeev Chorghade、Claudio Battilocchio、Joel M. Hawkins、Steven V. Ley
DOI:10.1021/ol4027107
日期:2013.11.15
A flow chemistry process for the Oppenauer oxidation of benzylic secondary alcohols using partially hydrated zirconium oxide and a simple carbonyl containing oxidant such as acetone, cyclohexanone, and neopentanal is reported. The heterogeneous oxidative system could be applied to a wide range of functionalized alcohol substrates, allowing clean and fast delivery of ketone products within a few minutes between 40 and 100 degrees C.
US6750243B1
申请人:——
公开号:US6750243B1
公开(公告)日:2004-06-15
Enzymatic resolution of α-tetralols by CALB-catalyzed acetylation
作者:Helena M.C. Ferraz、Graziela G. Bianco、Carla C. Teixeira、Leandro H. Andrade、André L.M. Porto
DOI:10.1016/j.tetasy.2007.05.007
日期:2007.5
A series of homochiral alpha-tetralols, as well as their respective acetates, has been obtained by esterification of racemic tetralols, using Candida antarctica lipase (CALB-Novozym(R) 435) as the biocatalyst. This enzyme is shown to be highly efficient for the kinetic resolution of the substrates studied, affording the (+)-tetralols and the (+)-acetates in excellent enantiomeric excess (up to >99%) and very good yields (>40%). (C) 2007 Elsevier Ltd. All rights reserved.
Benzoquinazoline inhibitors of thymidylate synthase: enzyme inhibitory activity and cytotoxicity of some 3-amino- and 3-methylbenzo[f]quinazolin-1(2H)-ones
作者:William Pendergast、Jay V. Johnson、Scott H. Dickerson、Inderjit K. Dev、David S. Duch、Robert Ferone、William R. Hall、Joan Humphreys、Joseph M. Kelly、David C. Wilson
DOI:10.1021/jm00068a004
日期:1993.8
The synthesis and thymidylate synthase (TS) inhibitory activity of a series of simple benzo-[f]-quinazolin-1(2H)-ones are described. Fully aromatic 3-amino compounds with compact lipophilic substituents in the 9-position were found to have I50 values as low as 20 nM on the isolated enzyme, and represent the first examples of potent, folate-based TS inhibitors that completely lack any structural feature corresponding to the (p-aminobenzoyl)glutamate moiety of the cofactor. A number of the compounds also showed moderate growth inhibitory activity against a human colon adenocarcinoma cell line (SW480), with IC50 values as low as 2 muM.