172
5.12.2
Glycosyl Compounds
5 Carbohydrates
a) (S)-2-Amino-2-carboxyethyll-selenoa-D-ribopyranoside
b) 3-( a-D-Ribopyranosylseleno)-D-alanine
c) Se-a-D-Ribopyranosyl-D-selenocysteine
Compounds in which the anomeric hydroxy group has been substituted by
halogen atoms, pseudohalogen or amino groups are named quasi radicofunctionally as glycosyl derivatives of the respective functional classes.
~:~
AcO
Br
H H
Tetra-O-acetyl-a-Dmannosyl bromide
H~CHO
H
HO
HO
N3
OH H
a-D-arabino-Hexos-2ulo-2,6-pyranosyl azide
or:
aldehydo-a- D-arabino-Hexos-2-ulopyranosyl azide
H~CH20H
H
HO
HO
NHPh
OH H
N-Phenyl-a-D-fructopyranosylamine
~:o~
MeO
S-C:::N
H
0
3,4,6-Tri -0-methyl-a-D-arabino-hexopyranosyl-2-ulose thiocyanate
~~'M~
AcO
N=C=O
H
OAc
Methyl-(2,3-4-tri -O-acetyl-a-D-glucopyranosyl)uronate isocyanate
systematically more logical would be:
Methyl- (2,3,4-tri -O-acetyl-l-isocyanatoI-deoxy-a-D-glucopyranuronate
o
c;:
Mes-~ 0
OH OH
1-( 5-S-Methyl-5-thio-f3- D-ribofuranosyl)
uracil