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Total synthesis of (±)-Δ9(12)-capnellene

✍ Scribed by H.J. Liu; M.G. Kulkarni

Publisher: Elsevier Science
Year: 1985
Tongue: French
Weight: 253 KB
Volume: 26
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)94967-0

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The marine triquinane sesquiterpene A 9(12) -capnellene (1) was synthesised from 2,2,5-trimethyl-5-hexenal (2) by a sequence of 11 synthetic operations \_ in 5% overall yield. The key steps 3 + 4 + 5 -f 6 involve two intramolecular type-I-"Mg-ene" processes.