Chemren Bio-Engineering Co., Ltd.

Inhibitor:LX4211
Company: Lexicon Pharmaceuticals

Meant to treat: type 2 diabetes
Mode of action: dual inhibitor of sodium glucose transporters 1 and 2, which play key roles in glucose absorption in the gastrointestinal tract and kidney
Medicinal chemistry tidbits: this drug candidate had Lexicon’s chemists refamiliarizing themselves with carbohydrate chemistry. Most inhibitors of sodium glucose transporters incorporate D-glucose in some way. Lexicon’s chemists realized they could try something different– inhibitors based on the scaffold of L-xylose, a non-natural sugar. The team has already published a J. Med. Chem paper (2009, 52, 6201–6204) explaining that strategy. LX4211 is a methyl thioglycoside-the team went with a methyl thioglycoside because upping the size too far beyond a methyl lost activity at SGLT1.
Status in the pipeline: LX4211 is currently completing Phase IIb trials.

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