Synthesis of Aromatic Polyester Having Oligosaccharide in the Main Chain
Kenichi HATANAKA*, Ryuji SHIRAISHI, Kaname KATSURAYA and Kohsaku OKUYAMA
Institute of Industrial Science, The University of Tokyo; 4-6-1 Komaba, Meguro-ku, Tokyo@153-8505@Japan
On D-lactose, C-6 and C-6' which have the primary hydroxy groups were selectively triphenylmethylated and the remaining secondary hydroxy groups were acetylated. During detriphenylmethylation, acyl migration occurred to give acetylated lactose having free hydroxy groups on C-6 and C-46'. Polycondensation of the obtained 1,2,3,2',3',6'-hexa-O-acetyl-D-lactose and terephthaloyl chloride gave the aromatic polyester having lactose in the main chain.