中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1,2:3,4-二-O-异亚丙基-α-D-半乳糖-己二醛-1,5-吡喃糖 | (3aR,5S,5aR,8aS,8bR)-2,2,7,7-Tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran-5-carbaldehyde | 4933-77-1 | C12H18O6 | 258.271 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | ethyl (methyl 1,2:3,4-di-O-isopropylidene-6-amino-6,7-dideoxy-L-glycero-α-D-galacto-octopyranoside)uronate | 696627-33-5 | C16H27NO7 | 345.393 |
A novel approach for the synthesis of naphthoquinone/naphthoquinol–carbohydrate hybrids using the Hauser annulation as the key synthetic step has been described.
Carbohydrate recognition is essential in cellular interactions and biological processes. It is characterized by structural diversity, multivalency and cooperative effects. To evaluate carbohydrate interaction and recognition, the structurally defined attachment of sugar units to a rigid template is highly desired. β-Peptide helices offer conformationally stable templates for the linear presentation of sugar units in defined distances. The synthesis and β-peptide incorporation of sugar-β-amino acids are described providing the saccharide units as amino acid side chain. The respective sugar-β-amino acids are accessible by Michael addition of ammonia to sugar units derivatized as α,β-unsaturated esters. Three sugar units were incorporated in β-peptide oligomers varying the sugar (glucose, galactose, xylose) and sugar protecting groups. The influence of sugar units and the configuration of sugar-β-amino acids on β-peptide secondary structure were investigated by CD spectroscopy.