CYCLODEXTRIN COMPOUND MODIFIED WITH FOLIC ACID, PROCESS FOR PRODUCTION THEREOF, DRUG DELIVERY AGENT FOR TARGETING DRUG DELIVERY SYSTEM, PHARMACEUTICAL COMPOSITION, AND IMAGING AGENT

摘要

Disclosed is a cyclodextrin compound which is produced by substituting two or more primary hydroxy groups at position-6 in a glucopyranose that constitutes cyclodextrin by substituents each having folic acid.