An isomer of N-acetylneuraminic acid (Neu5Ac) with the acetamido group at C-4 (iso-Neu4Ac) has been synthesized through stereoselective 1,4-conjugate addition of trimethylsilyl azide to a 2-thiazolyl α,β-enone bearing a protected D-mannose moiety at C-β. The same approach employing benzylamine as aminating reagent was less viable. In both routes the thiazole ring serves as a precursor to the formyl group which is oxidized to carboxylic acid in the final step of the synthesis. © 1994.
Synthesis of a sialic acid analog with the acetamido group at C-4
DONDONI, Alessandro;MARRA, Alberto
1994
Abstract
An isomer of N-acetylneuraminic acid (Neu5Ac) with the acetamido group at C-4 (iso-Neu4Ac) has been synthesized through stereoselective 1,4-conjugate addition of trimethylsilyl azide to a 2-thiazolyl α,β-enone bearing a protected D-mannose moiety at C-β. The same approach employing benzylamine as aminating reagent was less viable. In both routes the thiazole ring serves as a precursor to the formyl group which is oxidized to carboxylic acid in the final step of the synthesis. © 1994.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
