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. 2024 Apr 29;7:95. doi: 10.1038/s42004-024-01177-4

Fig. 5. Synthesis of E3 ligase ligand lenalidomide and linker 18.

Fig. 5

Reagents and conditions: (a) tert-butyl bromoacetate, sodium hydride (NaH), THF, 0 °C (30 min) to rt; (b) trifluoroacetic acid (TFA), DCM, rt; (c) SOCl2, DCM, rt; (d) lenalidomide, N-methyl-2-pyrrolidone (NMP), rt.