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Abstract
The total synthesis of dl-chamaecynone (1), which has termiticidal activity, has been accomplished. The key compound (30a), which has the same four chiral centers as chamaecynone (1), was obtained in a single step by taking advantage of the Diels-Alder reaction of 5-ethynyl-2-methylcyclohex-2-en-1-one (3) with 1-methoxy-3-trimethylsiloxy-1, 3-pentadiene (4). The stereostructure of the major adduct of the Diels-Alder reaction was determined to be the formula (30a) by INDOR experiment. The compound (30a) was converted in four steps into dl-chamaecynone. The preliminary examinations of the Diels-Alder reaction of trans-1-methoxy-3-trimethylsiloxy-1, 3-butadiene (2) with l-carvone and the compound (3) were also carried out, respectively.
Journal
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- Chemical and Pharmaceutical Bulletin
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Chemical and Pharmaceutical Bulletin 26 (4), 1201-1214, 1978
The Pharmaceutical Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204169456768
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- NII Article ID
- 110003623112
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- NII Book ID
- AA00602100
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- ISSN
- 13475223
- 00092363
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed