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. Author manuscript; available in PMC: 2020 Apr 1.
Published in final edited form as: Nat Metab. 2019 Oct 14;1(10):975–984. doi: 10.1038/s42255-019-0126-8

Extended Data Figure 4. Synthesis of 4-armed PEG-boronic acid.

Extended Data Figure 4.

Abbreviations used: HBTU, 1-[bis(dimethylamino)methylene]-1H-benzotriazolium hexafluorophosphate 3-oxide; DIPEA, diisopropylethylamine; DMF, N,N-dimethylformamide. The detailed description of the synthesis procedure is in the methods section.