Reaction #318990

ord-5e3483212c98434d915c768268ed6fd5

Reaction equation

O=C([O-])[O-].[Na+].[Na+]
Na2CO3
CCCCCCCCCCCCCCC/C=C/[C@H](O)[C@@H](CO[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@H](CO)[C@H](O[C@@H]3O[C@H](CO)[C@H](O)[C@H](O[C@@H]4O[C@H](CO)[C@H](O)[C@H](O)[C@H]4O)[C@H]3NC(C)=O)[C@H](O[C@]3(C(=O)O)C[C@H](O)[C@@H](NC(C)=O)[C@H]([C@H](O)[C@H](O)CO)O3)[C@H]2O)[C@H](O)[C@H]1O)NC(=O)CCCCCCCCCCCCCCCCCCC
GM1 ganglioside
→
CCCCCCCCCCCCC/C=C/[C@@H](O)[C@H](CO[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@H](CO)[C@H](O[C@@H]3O[C@H](CO)[C@H](O)[C@H](O[C@@H]4O[C@H](CO)[C@H](O)[C@H](O)[C@H]4O)[C@H]3NC(C)=O)[C@H](O[C@]3(C(=O)O)C[C@H](O)[C@@H](NC(C)=O)[C@H]([C@H](O)[C@H](O)CO)O3)[C@H]2O)[C@H](O)[C@H]1O)NC(=O)CCCCCCCCCCCCCCCCC
ganglioside GM1

Reactants

O=C([O-])[O-].[Na+].[Na+]
Na2CO3
—
ester
CCCCCCCCCCCCCCC/C=C/[C@H](O)[C@@H](CO[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@H](CO)[C@H](O[C@@H]3O[C@H](CO)[C@H](O)[C@H](O[C@@H]4O[C@H](CO)[C@H](O)[C@H](O)[C@H]4O)[C@H]3NC(C)=O)[C@H](O[C@]3(C(=O)O)C[C@H](O)[C@@H](NC(C)=O)[C@H]([C@H](O)[C@H](O)CO)O3)[C@H]2O)[C@H](O)[C@H]1O)NC(=O)CCCCCCCCCCCCCCCCCCC
GM1 ganglioside
—
ester

Reagents

None

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Procedure

IR spectroscopic examination on KBr pellets shows the typical band of the ester at 1750 cm-1. Chromatographic analysis of the product carried out in the same way as in Example 1 shows the presence of a unitary compound with an Rf of 0.92 and the absence of GM1 ganglioside and its internal ester (Rf 0.65 and 0.75, respectively). Hydrolysis with Na2CO3 as described in Example 1 produces the ganglioside GM1.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US04849413uspto-grants-1989_07