Site-Selective C─H Bond Functionalization of Sugars.

Summary: Making special types of sugars for medicine is usually very hard. Scientists normally have to use lots of chemical "shields" to protect parts of the sugar during the process, which takes a long time and doesn't always work right. Now, researchers have invented a clever new trick. They use a temporary chemical bridge that attaches directly to the bare sugar. With a quick flash of light, this bridge helps change the sugar at the exact right spot. Afterward, it turns into a simple shield that is easy to remove. This fast and easy method will help scientists make new medicines much more efficiently!