Biologically active l-O-alkyl-2-O-acetoyl-sn-glycero-3-phosphocholines are prepared in good yields from raffish (Hydrolagus colliei) liver oil, an inexpensive natural product, that contains over 70% neutral ether lipids.
On the synthesis of platelet-activating factor via acetylation of 1-alkyl-sn-glycero-3-phosphocholine. Formation of structural isomer of PAF in the presence of bases
โ Scribed by V.V Chupin; O.V Ostapenko; V.N Klykov; M.V Anikin; G.A Serebrennikova
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 537 KB
- Volume
- 81
- Category
- Article
- ISSN
- 0009-3084
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โฆ Synopsis
It has been shown that platelet-activating factor (PAF) specimens prepared via acetylation of 1-alkyl-sn-glycero-3-phosphocholine (lyso-PF) with acetic anhydride are heterogeneous. The contaminated compound was isolated and identified to be the structural isomer of PAF, 1-alkyl-3-acetyl-sn-glycero-2-phosphocholine (iso-PAF). It appeared, that iso-PAF is formed when performing the reaction in the presence of organic bases,but not under acid catalysis. The mechanism of iso-PAF formation is discussed.
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A specific acetylhydrolase that inactivates platelet activating factor (PAF; 1alkyl-2-acetyl-sn-glycero-3-phosphocholine), a potent cellular mediator in mammalian cells, by removal of the sn-2 acetyl moiety, has been found in the cytosolic fraction of several postemhryonir developmental stages and s
The effect of synthetic 1-O-octadecyl-2-O-acetyl-sn-glycero-3-phosphocholine (PAF-acether) and of 1-O-octadecyl-sn-glycero-3-phosphocholine (lyso-PAF-acether) on human neutrophil migration was studied in modified Boyden chambers, with the following results: (1) By checkerboard analysis and deactivat