Synthesis of the acidic pentasaccharide repeating unit of the cell wall O-antigen of Providencia alcalifaciens O45:H25 strain
作者:Abhijit Rana、Anup Kumar Misra
DOI:10.1016/j.tet.2023.133379
日期:2023.3
Synthesis of an acidic pentasaccharide repeatingunit corresponding to the cellwall O-antigen of the human pathogen, Providencia alcalifaciens O45:H25 strain has been achieved by multi-step stereoselective glycosylations. p-Methoxybenzyl (PMB) group was used as in situ removable protecting group, which was removed from the glycosylated products in the same pot after stereoselective glycosylations
Total synthesis of a unique tetrasaccharide present in the human clotting factor IX and mammalian Notch 1 receptor
作者:Chinmoy Mukherjee、Anup Kumar Misra
DOI:10.1016/j.tetasy.2009.02.003
日期:2009.3
The Synthesis Of a unique tetrasaccharide linked to the serine 61 of human clotting factor IX through an alpha-L-fucose residue has been achieved for the first time in excellent yield. All glycosylation and protecting group manipulation steps are high yielding and reproducible for a scale-Lip preparation. A sequential glycosylation strategy has been used to assemble suitably protected monosaccharide synthons for the preparation of the target tetrasaccharide. (c) 2009 Elsevier Ltd. All rights reserved.
Concise synthesis of two pentasaccharides corresponding to the α-chain oligosaccharides of Neisseria gonorrhoeae and Neisseria meningitidis
作者:Pintu Kumar Mandal、Anup Kumar Misra
DOI:10.1016/j.tet.2008.07.004
日期:2008.9
Two pentasaccharides containing a common tetrasaccharide (lacto-N-neotetraose) core, and D-galactosamine and N-acetyl neuraminic acid in the non-reducing ends, respectively, corresponding to the lipooligosaccharides of Neisseria gonorrhoeae and Neisseria meningitidis were synthesized in a very concise manner from a common trisaccharide derivative using minimum number of steps. Thioglycosides and glycosyl trichloroacetimidate have been used as glycosyl donors for glycosylations and yields were excellent in every step. (c) 2008 Elsevier Ltd. All rights reserved.