Das Verfahren zur Synthese von Lecithinen und ihren Ätheranalogen, bei welchem Diacyl-bzw. Di-O-alkyl-diglyceride (1) mit β-Bromäthyl-phosphorsäuredichlorid bei Gegenwart von Triäthylamin umgesetzt werden und anschließend mit Trimethylamin ins Phosphorylcholin 4 übergeführt werden, wurde so abgewandelt, daß beliebige, auch kürzerkettige (bis C8), Lecithine und ihre Ätheranaloga analysenrein und dü
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.