With the aim to develop inhibitors of the plasmepsinI and IIasparticproteases of the malariaparasite Plasmodium falciparum, we have synthesized sets of libraries from novel reversed-statine isosteres, using a combination of solution phase and solid phase chemistry. The synthetic strategy furnishes the library compounds in good to high overall yields and with excellent stereochemical control throughout
1,4-Dioxane-2,5-dione-type monomers derived from l-ascorbic and d-isoascorbic acids. Synthesis and polymerisation
作者:Manuel Bueno、Inmaculada Molina、Juan A. Galbis
DOI:10.1016/j.carres.2009.06.032
日期:2009.10
monomers. Ring-opening homopolymerisation and copolymerisation of the IPTA monomer, derived from l-ascorbic acid, with d,l-lactide have been performed. The polymers were characterised by elemental microanalysis, as well as IR and (1)H and (13)C NMR spectroscopies. GPC was used to estimate product molecular weights, and thermal studies (DSC and TGA) revealed that all the polymers were amorphous, being
A new convenient method for the synthesis of chiral C3-synthons
作者:Carry H.H. Emons、Ben F.M. Koster、Jozef A.J.M. Vekemans、Roger A. Sheldon
DOI:10.1016/s0957-4166(00)82119-9
日期:1991.1
Routes are described for the facile preparation of protected optically pure D- and L-glyceric acid (1a,b; 2a,b) starting from D-mannitol, D-isoascorbic acid and L-ascorbic acid. The key step is a ruthenium catalyzed oxidative cleavage of the vicinal diols 4a,b or the alpha-hydroxy acids 7a,b; 10a,b.