[EN] PROCESS FOR SYNTHESISING C-GLYCOSIDES<br/>[FR] PROCEDE DE SYNTHESE DE GLYCOSIDES C
申请人:UNIV AUSTRALIAN
公开号:WO2003102007A1
公开(公告)日:2003-12-11
The invention provides a process for the synthesis of C-glycosides. In the process, an O-glycosyl trichloroimidate is reacted with a pyrrole in the presence of a Lewis acid and the C-glycoside isolated from the foregoing reaction mixture. The invention also relates to the products of the process.
Total Synthesis of Laulimalide: Synthesis of the Northern and Southern Fragments
作者:Barry M. Trost、W. Michael Seganish、Cheol K. Chung、Dominique Amans
DOI:10.1002/chem.201102898
日期:2012.3.5
migration led to the development of an alternative route based on an asymmetric dinuclear Zn‐catalyzed aldol reaction of a hydroxyl acylpyrrole. This key reaction led to the desired diol adduct 66 with excellent syn/anti selectivity (10:1), and allowed for the successful completion of the northern fragment 7. The key step for the synthesis of the southern fragment was a chemoselective Rh‐catalyzed cycloisomerization
Dinuclear Zinc–ProPhenol-Catalyzed Enantioselective α-Hydroxyacetate Aldol Reaction with Activated Ester Equivalents
作者:Barry M. Trost、David J. Michaelis、Mihai I. Truica
DOI:10.1021/ol402081p
日期:2013.9.6
An enantioselective alpha-hydroxyacetate aldol reaction that employs N-acetyl pyrroles as activated ester equivalents and generates syn 1,2-diols in good yield and diastereoselectivity is reported. This dinuclear zinc-ProPhenol-catalyzed transformation proceeds with high enantioselectivity with a wide variety of substrates including aryl, alyl, and alkenyl aldehydes. The resulting alpha,beta-dihydroxy activated esters are versatile intermediates for the synthesis of a variety of carboxylic acid derivatives including amides, esters, and unsymmetrical ketones.
AMINO-SUBSTITUTED PYRIMIDINES, DERIVATIVES AND METHODS OF USE THEREFOR