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Item Description Pettus, John Anthony en_US 2009-09-09T19:25:14Z 2009-09-09T19:25:14Z 1971 en_US
dc.description Typescript. en_US
dc.description Thesis (Ph. D.)--University of Hawaii, 1971. en_US
dc.description Bibliography: leaves [217]-219. en_US
dc.description xvi, 219 l illus., graphs, tables en_US
dc.description.abstract The genus Dictyopteris is one of the few genera of seaweeds possessing odor. Its essential oil is composed of C11 hydrocarbons. The isolation and identification of eight hydrocarbons, viz. dictyopterene A [(+)-(R,R)-trans-l-(trans-hex-l'-enyl)-2-vinylcyclopropane (1)], dictyopterene B [(-)-(R,R)-trans-l-(trans,cis-hexa-l',3'-dienyl)- 2-vinylcyclopropane (2)], trans, cis, cis-undeca-l,3,5,8- tetraene (3), trans,trans,cis-undeca-l,3,5,8-tetraene (4), trans, cis-undeca-l,3,5-triene (5), trans,trans-undeca-l,3,5-triene (6), dictyopterene C' [(-)-(R)-6-butylcyclohepta-l,4-diene (7)], and dictyopterene D' [(+)-(S)-6-(cis-but-l'-enyl)-cyclohepta-l,4-diene (8)] are described.^(1,2,3,4) The compounds were separated by gradient chromatography on silver nitrate-silica gel and gas chromatography and were identified by spectroscopic and chemical methods. Biogenesis of the hydrocarbons is discussed. The thermal Cope rearrangements of 1→9 and 2→10 have been shown to be stereospecific and to involve a diradical intermediate. Compounds 9 and 10 were found to be identical in all respects except optical properties with 7 and 8 respectively. en_US
dc.language.iso en-US en_US
dc.publisher [Honolulu en_US
dc.relation Theses for the degree of Doctor of Philosophy (University of Hawaii (Honolulu)). Chemistry; no. 419 en_US
dc.rights All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner. en_US
dc.subject Marine algae -- Analysis en_US
dc.subject Dictyopteris en_US
dc.title Odoriferous constituents of Dictyopteris en_US
dc.type Thesis en_US
dc.type.dcmi Text en_US

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