STEARIC ACID DERIVATIVES AND OLEIC ACID DERIVATIVES OF MULTI-ARM POLYETHYLENE GLYCOL

摘要

Disclosed are multi-arm polyethylene glycol derivatives having structure of formula I or formula VI. Compared with straight chain polyethylene glycol，multi-arm polyethylene glycol has a plurality of terminal groups, thus has a plurality of introducing points of functional groups and can support a plurality of active terminal groups, thereby enabling multi-arm polyethylene glycol to have more flexibility and wider range of application.