What question did this study set out to answer?

This research aims to synthesize sulfobacin A and its analogues and assess their immunological recognition by T cells.

May 7, 2026

Synthesis and Evaluation of Sulfobacin A and Analogues for Their Roles in Immunological Recognition

Key Points

This research aims to synthesize sulfobacin A and its analogues and assess their immunological recognition by T cells.
Total synthesis of sulfobacin A and analogues via dynamic kinetic resolution
Utilized catalytic asymmetric reactions to establish three stereogenic centers
Biological evaluation using CD1 tetramers to observe T-cell recognition.
Sulfobacin A is recognized by multiple T-cell subsets including CD4, CD8, and NKT cells.
The overall yield of sulfobacin A was improved to 7.8% through late-stage optimization.
Modification of the lipid headgroup reduced CD1-mediated T-cell recognition.

Abstract

We report the total synthesis of sulfobacin A (1) and its stereoisomeric analogue 1a via dynamic kinetic resolution of racemic precursors using catalytic asymmetric reactions to establish three stereogenic centers without chiral building blocks. Late-stage optimization of the amide coupling improved the overall yield of 1 to 7.8%. Preliminary biological evaluation reveals that sulfobacin A is recognized by multiple T-cell subsets (CD4, CD8, and NKT cells) when presented by multiple CD1 tetramers, indicating that this sulfonolipid can engage T cells that influence both innate (NKT) and adaptive (CD4 and CD8) immune responses. Moreover, our data suggest that modification of the lipid headgroup or alteration to a monoacyl lipid diminishes CD1-mediated T-cell recognition.

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Synthesis and Evaluation of Sulfobacin A and Analogues for Their Roles in Immunological Recognition

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