A process for the preparation of glycerophospholipids
申请人:CHEMI S.p.A.
公开号:EP0575717A1
公开(公告)日:1993-12-29
A process for the preparation of higly pure deacylated glycerophosphorylcholine, glycerophosphorylethanolamine and glicerophosphorylserine starting from mixtures of the corresponding acylated derivatives.
The process according to the invention is characterized in that the deacylation reaction, by means of alcoholysis, and the fractionation are carried out in a single step in a reactor containing a basic ion-exchange resin.
New γ-pyrones, 9'-oxopodopyrone (3) and 8-methyl-9'-oxopodopyrone (4) were isolated from the leaves of Gonystylus keithii, along with known γ-pyrones, 10'-oxopodopyrone (1) and 8-methyl-10'-oxopodopyrone (2). These γ-pyrones markedly inhibited the bovine parathyroid hormone (PTH)-induced Ca release from neonatal mouse calvaria in vitro. It is the first time that γ-pyrones showed inhibitory effects on bone resorption, and these compounds may be seed compounds of new drugs for osteoporosis.