Et3B- and Et2Zn-Mediated Radical Additions to Glyoxylate Imines, Compared Stereoinductions
摘要:
1,3-Stereoinduction in the addition of alkyl radicals to glyoxylic imines derived from various chiral amines has been investigated. New synthetic methodologies involving Et3B and Et2Zn as mediators have been compared. Dihydro-1,4-oxazin-2-one (2b) gave the highest d.e. but no chemoselectivity. Open chain analogues derived from beta-alkoxyamines led to good stereoinduction when the reaction was performed with Et2Zn which is a bidentate complexing reagent. (C) 2000 Elsevier Science Ltd. All rights reserved.
Direct Catalytic Synthesis of Unprotected 2-Amino-1-Phenylethanols from Alkenes by Using Iron(II) Phthalocyanine
作者:Luca Legnani、Bill Morandi
DOI:10.1002/anie.201507630
日期:2016.2.5
medicinal chemistry and natural products. Herein, we report that an exceptionally simple and inexpensive FeII complex efficiently catalyzes the direct transformation of simple alkenes into unprotected amino alcohols in good yield and perfect regioselectivity. This new catalytic method was applied in the expedientsynthesis of bioactive molecules and could be extended to aminoetherification.
作者:Teodozyj Kolasa、Sushil K. Sharma、Marvin J. Miller
DOI:10.1016/s0040-4020(01)86049-x
日期:——
prevent competitive reactions. The procedure allowed for direct formation of the α-chiral center of the newly formed α-N-hydroxyamino acid derivative. Introduction of potential chiral auxiliaries on the oxime oxygen resulted in modest diastereoselection. In most instances, use of chiral glyoxylamides also gave low diastereoselectivity.
3,4-Di-substituted cyclobutene-1,2-diones as CXC-chemokine receptor ligands
申请人:Taveras G. Arthur
公开号:US20070021494A1
公开(公告)日:2007-01-25
There are disclosed compounds of the formula
or a pharmaceutically acceptable salt or solvate thereof which are useful for the treatment of chemokine-mediated diseases such as acute and chronic inflammatory disorders and cancer.
3,4-DI-SUBSTITUTED CYCLOBUTENE-1,2-DIONES AS CXC-CHEMOKINE RECEPTOR LIGANDS
申请人:Taveras Arthur G.
公开号:US20090306079A1
公开(公告)日:2009-12-10
There are disclosed compounds of the formula
or a pharmaceutically acceptable salt or solvate thereof which are useful for the treatment of chemokine-mediated diseases such as acute and chronic inflammatory disorders and cancer.
3,4-Di-Substituted Cyclobutene-1,2-Diones as CXC-Chemokine Receptor Ligands
申请人:Taveras Arthur G.
公开号:US20110213029A1
公开(公告)日:2011-09-01
There are disclosed compounds of the formula
or a pharmaceutically acceptable salt or solvate thereof which are useful for the treatment of chemokine-mediated diseases such as acute and chronic inflammatory disorders and cancer.