Journal
TETRAHEDRON LETTERS
Volume 56, Issue 2, Pages 327-330Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2014.11.078
Keywords
Triterpene; Spirocyclic compound; Claisen rearrangement; Oxidative rearrangement
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan [19790026]
- NOVARTIS Foundation (Japan) for the Promotion of Science
- Chugai Pharmaceutical Co. Ltd.
- Grants-in-Aid for Scientific Research [19790026, 25450151] Funding Source: KAKEN
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The spiroiridal triterpenoids show interesting biological activities, such as a piscicidal activity, PKC activation, and molluscicidal activity. Herein, the first synthesis of the functionalized spiro[4.5]decane skeleton of spiroiridal triterpenoids was accomplished. The characteristic features of the present synthesis are the Claisen rearrangement of 2-(alkenyl)dihydropyran developed by our group and the efficient transformation into the key intermediate (+)-6. (C) 2014 Elsevier Ltd. All rights reserved.
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