Synthesis of dolichyl phosphate derivatives with fluorescent label at the ω-end of the chain, new tools to study protein glycosylation
摘要:
Derivatives of dolichyl phosphate (Dol-P) with 2-aminopyridine or 1-aminonaphtalene fluorophore groups at the omega-end of the chain were synthesized. These products serve as substrates for recombinant yeast Dol-P-mannose synthase. Fluorescence resonance energy transfer between a Trp residue of the enzyme and the 1-aminonaphtalene group of the Dol-P analogue was demonstrated. (C) 2000 Elsevier Science Ltd. All rights reserved.
A simple approach to the synthesis of dolichyl phosphate derivatives with a fluorescent label, 2-aminopyridine residue, at the omega -end of the chain was developed. The method includes selective van Tamelen epoxidation of the omega -isoprene unit in dolichyl acetates, transformation of the epoxides to omega -terminal aldehydes, their reductive amination, and phosphorylation of the resulting amino alcohols.