| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Research Abstract |
A cellobiose derivative whose C1 and C4' hydroxyl groups are freeand others are protected with benzyl groups was synthesized. It was cyclized between the C1 and C4' hydroxyl groups to give a new cyclic disaccharide derivative bearing an anhydroring bridged over different sugar residues in one disaccharide. The cyclic cellobiosederivative was polymerized cationically with pentafluoride as an initiator to give a polymer with a number-average molecular weight of 1.4×10^4. Currently, chemical structure of the resulting polymer is still unclear because of low conversion. This work provided a new synthetic method of polysaccharides by ring-opening polymerization of unique cyclicdisaccharides, which elongates the repeating sugar residue by two units.
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