Glycoside Etherification in Tetrahydropyran for High Purity
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Solution Overview
Problem
Existing methods for producing glycoside compounds result in impurities, leading to unsatisfactory purity levels.
Innovation Solution
A method involving the reaction of a glycoside compound with an ether compound in solvents like tetrahydropyran and 4-methyltetrahydropyran, in the presence of halogenating agents such as iodine, to suppress impurity formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a glycoside compound is reacted with a thioether compound in tetrahydrofuran as a solvent, then the glycoside compound can be produced, but the purity of the glycoside compound is not satisfactory due to impurity formation
Solution Approach 1:
The invention changes the solvent parameter from tetrahydrofuran to tetrahydropyran or 4-methyltetrahydropyran, and changes the halogenating agent parameter to specific compounds (N-iodosuccinimide, iodine, or bromine), which resolves the impurity formation issue while maintaining the ether introduction reaction efficiency
Solution Approach 2:
The invention converts the potentially harmful side reactions that occur in tetrahydrofuran into beneficial selective reactions by using specific halogenating agents (N-iodosuccinimide, iodine, or bromine) that promote the desired ether formation while minimizing impurity generation
2Productivity
If existing methods are used to produce glycoside compounds, then production can proceed, but impurities are formed leading to unsatisfactory purity levels
Solution Approach 1:
The invention optimizes reaction parameters by selecting specific solvents (tetrahydropyran, 4-methyltetrahydropyran) and halogenating agents (N-iodosuccinimide, iodine, bromine) that simultaneously maintain high reaction efficiency and produce high purity products, resolving the contradiction between productivity and manufacturing precision
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
The method achieves high purity glycoside compounds suitable for oligonucleic acid synthesis by minimizing impurities.
Implementation Method 1
reacting a glycoside compound represented by formula (1) with an ether compound represented by formula (2) in one or more solvents selected from tetrahydropyran and 4-methyltetrahydropyran in the presence of one or more halogenating agents selected from halogen, N-halogenated succinimide, and N-halogenated hydantoin
Data Source
AI summary
A purpose of the present invention is to provide a method for producing a glycoside compound having a high purity. The present invention provides a method for producing a glycoside compound represented by formula (3) (wherein Ba, i-Pr and n are the same as those defined below), which comprises reacting a glycoside compound of formula (1) (wherein Ba represents an adenine group which may be optionally substituted with an acyl group, and i-Pr represents an isopropyl group) with an ether compound of formula (2) (wherein R1 represents a C1-C6 alkyl group or a phenyl group, and n is 0 or 1) in one or more solvents selected from tetrahydropyran and 4-methyltetrahydropyran in the presence of one or more halogenated agents selected from halogen, N-halogenated succinimide, and N-halogenated hydantoin.