| Budget Amount *help |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2010: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2009: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2008: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Research Abstract |
Efficient deprotection of acetal-type protective groups(MOM-, MEM-, SEM-, and BOM-ether) of hydroxyl function and one-pot transformation of MOM-ethers to other acetal-type protective groups have been developed. Introduction of some nucleophiles to the anomeric position of 2-deoxysugars via cationic salt intermediates has been succeeded. Nucleophilic substitution of carbon nucleopohiles to cationic salt intermediate has been developed by studying the kind of pyridine-type base for forming salt. Efficient preparation method of crowded ethers, which are hard to be synthesized by previous methods, has been developed by the reaction of the salts, from MOM-ethers, and organocuprate reagents.
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