Studies on 5-8 fused ring compounds. IV. The syntheses of 5-8-5 fused ring compounds and the conformations of their eight-membered rings.
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概要
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The isomers, <I>cis</I>-<I>cisoid</I>-<I>cis</I>- and <I>cis</I>-<I>transoid</I>-<I>cis</I>-tricyclo[9.3.0.0<SUP>4,8</SUP>]tetradecane-2,9-dione (<B>2</B> and <B>3</B>) and <I>cis</I>-<I>cisoid</I>-<I>cis</I>-tricyclo[9.3.0.0<SUP>3,7</SUP>]tetradecane-2,9-dione (<B>4</B>) were synthesized by the photocycloaddition of bicyclo[4.3.0]nonane-2,4-dione (<B>1</B>) to cyclopentene. X-Ray analyses of those compounds revealed that the conformations of the eight-membered rings are twist-boat in <B>2</B>, chair in <B>3</B>, and boat–chair form in <B>4</B>.
- 公益社団法人 日本化学会の論文
著者
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Okumoto Satoshi
Department Of Blood Purification Hiroshima University Hospital
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Hishida Shinzaburo
Naka Works, Hitachi Ltd.
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Saito Yoshihiko
Department Of Cardiology Juntendo University School Of Medicine
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OHBA SHIGERU
Deparment of Biology, Faculty of Science, Tokyo Metropolitan University
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Ito Masatoki
Department of Chemistry, Faculty of Science and Technology, Keio University
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Umehara Misao
Department of Chemistry, Keio University
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