A series of fluorescent dolichyl phosphates containing the (1-naphthyl)amino group in the omega-fragment of the chain and possessing a definite distance between fluorophoric and phosphate groups were synthesized for studying the interactions of dolichyl phosphates with enzymes and biological membranes. The corresponding terminal 2,3-dihydrohexadeca-, 2,3-dihydroundeca-, and 2,3-dihydrooctaprenol epoxides were obtained from racemic dolichols (prepared from natural polyprenol mixtures) by van Tamelen epoxidation of their omega-isoprene unit and separated by preparative HPLC. These epoxides were converted to aldehydes, which were subjected to reductive amination with 1-aminonaphthalene and NaBH4 with subsequent phosphorylation of the resulting amino alcohols.
A series of fluorescent dolichyl phosphates containing the (1-naphthyl)amino group in the omega-fragment of the chain and possessing a definite distance between fluorophoric and phosphate groups were synthesized for studying the interactions of dolichyl phosphates with enzymes and biological membranes. The corresponding terminal 2,3-dihydrohexadeca-, 2,3-dihydroundeca-, and 2,3-dihydrooctaprenol epoxides were obtained from racemic dolichols (prepared from natural polyprenol mixtures) by van Tamelen epoxidation of their omega-isoprene unit and separated by preparative HPLC. These epoxides were converted to aldehydes, which were subjected to reductive amination with 1-aminonaphthalene and NaBH4 with subsequent phosphorylation of the resulting amino alcohols.
Synthesis of dolichyl phosphate derivatives with fluorescent label at the ω-end of the chain, new tools to study protein glycosylation
作者:Vladimir N Shibaev、Vladimir V Veselovsky、Antonina V Lozanova、Sergei D Maltsev、Leonid L Danilov、W.Thomas Forsee、Jun Xing、Herbert C Cheung、Mark J Jedrzejas
DOI:10.1016/s0960-894x(99)00662-9
日期:2000.1
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.