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Synthetic scheme of PPM. Methyl ester-functionalized penta-phenylene derivative (A) was prepared from 1,3-dibromophenol using a boronic acid-based Suzuki coupling reaction. The resulting compound was further modified by reduction and pentaerythritol conjugation to give mono-ol and tri-ol compounds (B and C), respectively. The triol-functionalized aromatic compound (C) was used for β-selective glycosylation and global deprotection, providing penta-phenylene maltoside (PPM).
