Nicotinamide Ribose Stabilization with Borate
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Solution Overview
Problem
Current methods for synthesizing nicotinamide ribose are expensive and result in unstable products due to the molecule's reactivity, leading to decomposition and impurities in commercial samples.
Innovation Solution
A cost-effective synthesis of nicotinamide ribose phosphate is achieved through the direct reaction of ribose-1,2-cyclic phosphate and nicotinamide in the presence of Ca2+, followed by conversion to unphosphorylated nicotinamide ribose using an enzymatic phosphatase, and stabilization with borate to prevent decomposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If current procedures are used to manufacture nicotinamide ribose, then production cost is reduced, but product stability deteriorates and decomposition occurs
Solution Approach 1:
The patent uses an enzymatic phosphatase as an intermediary to convert nicotinamide ribose phosphate to unphosphorylated nicotinamide ribose. This enzymatic step provides mild, selective reaction conditions that preserve product stability while enabling the transformation. The enzyme acts as a mediator that facilitates the reaction without requiring harsh chemical conditions that would cause decomposition.
Solution Approach 2:
The patent changes the chemical parameters by using enzymatic catalysis instead of traditional chemical phosphatases. This shifts the reaction conditions to physiological pH and temperature ranges, which prevents decomposition of the sensitive nicotinamide ribose molecule while still achieving the desired dephosphorylation.
2Productivity
If nicotinamide ribose is synthesized using conventional methods, then synthesis is achieved, but the glycosidic bond becomes unstable and cleavage occurs
Solution Approach 1:
The patent performs preliminary protection of the glycosidic bond by synthesizing nicotinamide ribose phosphate first, where the phosphate group at the 2' position provides steric and electronic protection to the anomeric center. This preliminary structure prevents premature cleavage during synthesis and handling, allowing the unstable bond to be formed and then stabilized before final conversion to the unphosphorylated product.
Solution Approach 2:
The phosphate group serves as a protective cushion for the unstable glycosidic bond during synthesis and purification. This preliminary protective group prevents decomposition during the synthesis process, and is only removed in the final enzymatic step under controlled conditions, effectively cushioning the molecule from harmful conditions throughout the synthesis pathway.
3Manufacturing precision
If nicotinamide ribose phosphate is produced directly from ribose-1,2-cyclic phosphate and nicotinamide, then yield and stereoselectivity improve, but product stability must be maintained
Solution Approach 1:
The enzymatic phosphatase serves as an intermediary that converts the stable nicotinamide ribose phosphate to the final product under mild conditions. This enzymatic step maintains the stereoselectivity achieved in the synthesis while providing conditions that prevent racemization or decomposition, thus preserving both the manufacturing precision and product stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method yields a stable form of nicotinamide ribose phosphate with improved yield and stereoselectivity, reducing production costs and maintaining stability, as demonstrated by HPLC and NMR analysis.
Implementation Method 1
nicotinamide ribose phosphate emerges in stable form by direct reaction of ribose-1,2-cyclic phosphate
Implementation Method 2
conversion of the phosphorylated nicotinamide ribose product to unphosphorylated nicotinamide ribose upon treatment with an enzymatic phosphatase
Implementation Method 3
nicotinamide ribose can be stabilized by borate
Data Source
AI summary
Nicotinamide ribose has many applications, including as a dietary supplement. This invention convers a process to prepare nicotinamide ribose it in its phosphorylated form. The instant invention is based on the discovery that nicotinamide ribose phosphate emerges in stable form by direct reaction of ribose-1,2-cyclic phosphate. It is based on the further conversion of the phosphorylated nicotinamide ribose product to unphosphorylated nicotinamide ribose upon treatment with an enzymatic phosphatase, most preferably in buffer containing borate. It is based on the further discovery that compositions of nicotinamide ribose with borate slow the decomposition of nicotinamide ribose, and therefore is more useful than compositions of nicotinamide ribose without borate.