ENANTIOSELECTIVE TRANSFER HYDROGENATION;
ORGANOCATALYTIC TRANSFER HYDROGENATION;
ALPHA-IMINO ESTERS;
ALDOL-REACTION;
ALPHA;
BETA-UNSATURATED ALDEHYDES;
MICHAEL ADDITION;
RECYCLABLE ORGANOCATALYST;
REDUCTIVE AMINATION;
ORGANIC-SYNTHESIS;
PHOSPHORIC-ACID;
D O I:
10.1016/j.tetasy.2009.02.036
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
A resin-supported N-terminal prolyl peptide having a beta-turn motif and a polyleucine tether has been developed for the organocatalytic asymmetric transfer hydrogenation under aqueous conditions. Polyleucine accelerated the reaction in a highly enantioselective manner by providing a hydrophobic microenvironment around the prolyl residue. The investigation of catalyst structures indicates that the L-form of polyleucine is essential for both reaction efficiency and enantioselectivity. (c) 2009 Elsevier Ltd. All rights reserved.
机构:
Scripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USA
Brogan, Andrew P.
Dickerson, Tobin J.
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机构:
Scripps Res Inst, Worm Inst Res & Med, Dept Chem, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USA
Dickerson, Tobin J.
Janda, Kim D.
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USA
机构:
Scripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USA
Brogan, Andrew P.
Dickerson, Tobin J.
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Worm Inst Res & Med, Dept Chem, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USA
Dickerson, Tobin J.
Janda, Kim D.
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USAScripps Res Inst, Skaggs Inst Chem Biol, Worm Inst Res & Med, Dept Chem & Immunol, La Jolla, CA 92037 USA