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Abstract / Description of output
Sucrose is the main saccharide transported in plants and plays an essential role in energy metabolism; however, there are no analogues for real-time imaging in live cells. We have optimised a synthetic approach to prepare sucrose analogues including very small (<40 Da) Raman tags in the fructose moiety. Spectroscopic analysis identified the alkyne-tagged compound 6 as a sucrose analogue able to be recognised by sucrose transporters in live cells and with remarkably higher Raman intensity than other sucrose derivatives. Herein we demonstrate the application of compound 6 as the first optical probe to visualise real-time uptake and intracellular localisation of sucrose in live plant cells using Raman microscopy.