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Hierarchical and Programmable One-Pot Oligosaccharide Synthesis
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Automated, Multistep Continuous-Flow Synthesis of 2,6-Dideoxy and 3-Amino-2,3,6-trideoxy Monosaccharide Building
Subbarao Yalamanchili1, Tu-Anh Nguyen1, Alexander Zsikla1
1Chemistry, Tufts University, 62 Talbot Ave, Medford, MA, 02145, USA.
Angewandte Chemie (International Ed. in English)
|August 31, 2021
Summary
An automated continuous flow system efficiently synthesizes protected deoxy-sugar donors. This novel approach accelerates the production of complex carbohydrates, crucial for pharmaceutical research.
Area of Science:
- Organic Chemistry
- Chemical Engineering
- Synthetic Chemistry
Background:
- Deoxy-sugar donors are essential building blocks in carbohydrate chemistry.
- Traditional synthesis methods can be time-consuming and require extensive purification.
Purpose of the Study:
- To develop an automated continuous flow system for synthesizing protected deoxy-sugar donors.
- To enable rapid, efficient, and scalable production of these valuable compounds.
Main Methods:
- Utilized an automated continuous flow system for multi-step synthesis.
- Employed orthogonal protecting groups for selective functionalization.
- Integrated reactions into a continuous process, minimizing intermediate purification.
- Designed a modular setup for parallel synthesis and automation via Python.
Main Results:
- Successfully synthesized four 2,6-dideoxy and two 3-amino-2,3,6-trideoxy sugars.
- Achieved overall yields of 11-32% within short total reaction times (74-131.5 minutes).
- Demonstrated the feasibility of concatenating reactions and parallel synthesis in flow.
Conclusions:
- The developed automated continuous flow system offers a significant advancement in deoxy-sugar donor synthesis.
- This platform provides a rapid, efficient, and scalable method for producing complex carbohydrate building blocks.
- The open-source automation platform facilitates accessibility and further development in synthetic chemistry.
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