sorting of GPI-anchored proteins is based on labeled partial structures of GPI′s which can be incorporated into the GPIanchor biosynthesis and cellular transport systems. To this end, from mannosyl donor 6 and the D-glucosaminyl-(16)-D-myo-inositol derivative 7 as acceptor, the pseudotrisaccharide 8 was prepared. Compound 8 was transformed into the GPI partial structures 5a,b which contain the pseudotrisaccharide
Synthesis of phosphatidylinositol mannosides (PIMs)
作者:Andreas Stadelmaier、Richard R Schmidt
DOI:10.1016/j.carres.2003.06.002
日期:2003.11
Two strategies towards the synthesis of phosphatidylinositolmannosides (PIMs) were elaborated which permit selective access to the O-1-, O-2-, and the O-6 position of the myo-inositol residue. Starting materials are 1,2:5,6- and 1,2:4,5-di-O-cyclohexylidene-DL-myo-inositol, respectively. In the latter case, the required assignment to the D- or L-series is based on the transformation of one enantiomer
作者:Shoukath M. Ali、Moghis U. Ahmad、Peter Koslosky、Krishnudu Kasireddy、U. Murali Krishna、Imran Ahmad
DOI:10.1016/j.tet.2006.04.071
日期:2006.7
A phosphoramidite approach using 2-cyanoethyl N,N-diisopropylchlorophosphoramidite was utilized for the first time to synthesize short chain cardiolipins. The approach was extended to synthesize long chain and their ether analogue. Optically active 1,2-di-O-acylsn-glycerol or 1,2-di-O-myristyl-sn-glycerol was coupled with phosphoramidite reagent and 2-benzyloxy-1,3-propanediol in presence of 1H-tetrazole, followed by in situ oxidation, to give the corresponding protected cardiolipin analogues. The above intermediates were converted into cardiolipin analogues in two steps by deprotection of cyanoethyl and benzyl groups. (c) 2006 Elsevier Ltd. All rights reserved.