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Synthetic pathway to P(GDDAc, q)27 (10). (a) Functionalization of PG27 (1) with 4-nitrophenyl chloroformate, pyridine/DCM, rt, 20 h; (b) Reaction of P(GNPC)27 (7) with dl-homocysteine thiolactone hydrochloride, 4-DMAP, Et3N, DMF, rt, 20 h; (c) Ring-opening reaction with DMAPA, followed by thiol-ene reaction with dodecyl acrylate, CHCl3, rt, 20 h; (d) Quaternization of tertiary amines with methyl iodide, THF, rt, 20 h.
