3-Methyl-α-himachalene is confirmed, and the relative stereochemistry defined, by synthesis as the sex pheromone of the sandfly Lutzomyia longipalpis from Jacobina, Brazil
作者:J. Gordon C. Hamilton、Antony M. Hooper、John A. Pickett、Kenji Mori、Satoshi Sano
DOI:10.1039/a900242a
日期:——
The structure of the sex pheromone produced by the male sandfly Lutzomyia longipalpis, from the Jacobina region of Brazil, previously proposed tentatively as the novel homosesquiterpene 3-methyl-α-himachalene is confirmed by synthesis and biological activity; the relative stereochemistry is defined as 1RS,3RS,7RS by comparing the natural product with the four synthetic diastereoisomers.
Synthesis of (1R*,3R*,7R*)-3-Methyl-α-himachalene, the Racemate of the Male-Produced Sex Pheromone of the SandflyLutzomyia longipalpis from Jacobina, Brazil
Four stereoisomers (1a–d) of (±)-3-methyl-α-himachalene were synthesized by employing the intramolecular Diels–Alder reaction of (±)-14 to (±)-18 as the key-step. The male-producedsexpheromone of the sandfly Lutzomyia longipalpis was shown to possess the structure and relative configuration as depicted in 1c.