Base-assisted elimination-reduction of alpha -amidoalkyl sulfones with sodium borohydride proceeds in tetrahydrofuran at room temperature leading to the corresponding BOC-amines in good yields. (C) 2001 Elsevier Science Ltd. All rights reserved.
An expeditious one-pot synthesis of diethyl N-Boc-1-aminoalkylphosphonates
作者:Anna Klepacz、Andrzej Zwierzak
DOI:10.1016/s0040-4039(01)02289-4
日期:2002.2
A general one-pot, purification-free synthesis of diethyl N-Boc-1-aminoalkylphosphonates has been developed. The procedure involves base-catalyzed Michael-type addition of sodium diethyl phosphite to N-Boc imines generated in situ by the action of sodium hydride on α-amidoalkyl-p-tolyl sulfones in tetrahydrofuran.
Phase Transfer Catalyzed Enantioselective Strecker Reactions of α-Amido Sulfones with Cyanohydrins
作者:Raquel P. Herrera、Valentina Sgarzani、Luca Bernardi、Francesco Fini、Daniel Pettersen、Alfredo Ricci
DOI:10.1021/jo061566u
日期:2006.12.1
A study into the use of a chiral phase-transfer catalyst in conjunction with acetone cyanohydrin to effect the enantioselective formation of α-amino nitriles from α-amido sulfones is described. This novel catalytic asymmetric Streckerreaction is analyzed with regard to the possible mechanistic basis.
Arginase Inhibitors and Their Therapeutic Applications
申请人:OncoArendi Therapeutics S.A.
公开号:US20170319536A1
公开(公告)日:2017-11-09
Disclosed are small molecule therapeutic compounds that are potent inhibitors of arginase 1 and arginase 2 activity. Also disclosed are pharmaceutical compositions comprising the compounds, and methods for using the compounds for treating or preventing a disease or condition associated with arginase activity.
The unprecedented use of phase-transfer catalysis (PTC) in an asymmetric hydrophosphonylation reaction allows the obtainment of a range of optically active α-amino phosphonic acid derivatives directly from α-amido sulfones.
Catalytic asymmetric Mannich reaction of glycine Schiff bases with α-amido sulfones as precursors of aliphatic imines
作者:Elier Hernando、Ramón Gómez Arrayás、Juan C. Carretero
DOI:10.1039/c2cc35160a
日期:——
A general and practical Cu(I)-Fesulphos-catalyzed Mannich reaction of glycinate Schiff bases with aliphatic imines generated in situ from alpha-amido sulfones is described. Imines with linear and branched alkyl chains, including substrates bearing functional groups, can be efficiently applied. The resulting syn-configured orthogonally protected beta-alkyl-alpha,beta-diamino acid derivatives are produced