Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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Outline of Final Research Achievements |
We found that 1,4-zwitterionic intermediates which were formed by Lewis acid-mediated ring cleavage of 3-alkoxy or 3-aminocyclobutanones reacted with indoles at their C2-C3 double bonds to afford the corresponding hydrocarbazoles. We accomplished total synthesis of racemic aspidospermidine and synthesis of partial structure of racemic strictamine by using the above-mentioned cycloaddition reaction. Furthermore, we accomplished optically active thromboxane B2 by using formal [4+2] cycloaddition reaction between a 3-alkoxycyclobutanone and an aldehyde.
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