Unlocking nature's antioxidants: a novel method for synthesising plasmalogens

Area of Science:

• Biochemistry
• Organic Synthesis
• Lipidomics

Background:

• Plasmalogens are vital glycerophospholipids with a unique vinyl ether group at the sn-1 position.
• Altered plasmalogen levels are linked to various disease states, necessitating their synthetic availability for research and therapeutic development.

Purpose of the Study:

• To develop a versatile and reproducible synthetic route for plasmalogens, specifically plasmenyl phosphocholines.
• To enable the synthesis of diverse plasmalogen structures for analytical, diagnostic, and therapeutic applications.

Main Methods:

• Utilized a novel O-protecting group, 1,4-dimethoxynaphthyl-2-methyl (DIMON).
• Employed a new stereospecific method for synthesizing Z-vinyl ethers.
• Developed a key intermediate, (S,Z)-1-((1,4-dimethoxynaphthalen-2-yl)methoxy)-3-(hexadec-1-en-1-yloxy)propan-2-ol.

Main Results:

• Achieved a reproducible and versatile synthetic route for plasmalogens.
• The synthesis yields products with very high configurational purity (>99% Z) and optical purity (>99% ee).
• Successfully incorporated polyunsaturated fatty acyl chains, such as docosahexaenoic acid, at the sn-2 position.

Conclusions:

• The developed methodology provides a scalable 'à la carte' approach to plasmalogen synthesis.
• This new route offers superior purity and versatility compared to previous methods.
• Facilitates the production of essential plasmalogen analogues for disease-related studies.