66701-63-1Relevant articles and documents
Method for preparing difatty acyl phosphatidylcholine by solid-phase reaction
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Paragraph 0017; 0018; 0021; 0022; 0027-0041, (2019/12/25)
The invention relates to a method for preparing difatty acyl phosphatidylcholine by a solid-phase reaction. Glycerol phosphatidylcholine is subjected to wet-process loading by using a high-activity solid adsorbent, and then a condensation reaction is carried out on the glycerol phosphatidylcholine with fatty acid to obtain the difatty acyl phosphatidylcholine. The method comprises the following steps: dissolving glyceryl phosphatidylcholine in an organic solvent, adding a high-activity solid adsorbent, carrying out adsorbing dispersion while stirring, removing the organic solvent by vacuum evaporation, and carrying out vacuum drying on the obtained solid-phase loaded mixed material; dissolving fatty acid in an organic solvent, adding a condensation coupling agent, carrying out heating reflux to prepare active ester of fatty acid, adding the solid-phase loaded glyceryl phosphatidylcholine, and continuing reflux to prepare a difatty acyl phosphatidylcholine crude product; and carrying out filtering to recover the high-activity solid adsorbent, desolventizing mother liquor, pulping a crude product by using an organic solvent, and carrying out recrystallizing to obtain the high-puritydifatty acyl phosphatidylcholine. According to the method, the reaction yield reaches 65% or above, the product purity reaches 99% or above, the process is simple, the production period is short, andindustrial production is easy to achieve.
Process for the production of phospholipids
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Page/Page column 16, (2008/06/13)
A new enzymatic process for preparing 1,2-diacylated phospholipids using an enzyme preparation possessing phospholipase activity towards acylation at the sn-1 and sn-2 sites in a microaqueous reaction system. More particularly, the 1,2-diacyl-phospholipids produced according to the esterification/transesterification process are obtainable in high yield and purity and carry identical desired carboxylic acid, preferably fatty acid, acyl groups at the sn-1 and sn-2 positions. The process involves esterification/transesterification (acylation) of a glycerophospholipid, preferably glycerophosphoryl choline (GPC) with a desired carboxylic acid, preferably fatty acid, or their derivatives in the presence of the above mentioned appropriate enzyme preparation. The process of the invention further relates to a process for the production of 1-acyl-2-lyso-glycerophospholipid, preferably 2-lyso-PC by reacting glycerophospholipid, preferably glycerophosphoryl choline (GPC) with a desired carboxylic acid, preferably fatty acid, or their derivatives in the presence of a sn-1 specific phospholipase (PLA1 or PLA1,2) and a solvent, in a microaqueous medium.
Facile and useful synthesis of enantiomeric phosphatidylcholines
Ishihara, Masami,Sano, Atsunori
, p. 1096 - 1098 (2007/10/03)
The synthesis of optically active phosphatidylcholines (D- and L-4) containing two of the same fatty acid moieties in a molecule is described. Optically pure D-enantiomers (D-4) were obtained from 2,3-di-O-acyl-sn- glycerol (D-1) in high yield by phosphorylation with phosphorus oxychloride and subsequent treatment with choline tosylate (11a). L-Enantiomers (L-4) were also prepared in a similar manner from 1,2-di-O-acyl-sn-glycerol (L-1). The whole procedure is easy and useful for the synthesis of enantiomeric phosphatidylcholines.
