| 摘要 |
PROBLEM TO BE SOLVED: To provide a 3-oxa-2-thiatricyclo[4.2.1.0<SP>4,8</SP>]nonane derivative. SOLUTION: The nonane derivative represented by formula [R<SP>a</SP>is H or an alkyl; R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP>are each H, an alkyl; R<SP>5</SP>, R<SP>6</SP>, R<SP>7</SP>are H, an alkyl, a substituted oxycarbonyl, cyano; X is methylene which may be substituted, O or S; (n) is 1 or 2]. COPYRIGHT: (C)2007,JPO&INPIT
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