title: Terpene constituents of the leaves of five Vietnamese species of Clausena (Rutaceae).
abstract: This article reports the compounds identified in the leaf oils of five Clauseana species growing in Vietnam. The hydrodistilled oils were analysed for their chemical constituents by using gas chromatography-flame ionisation detector and gas chromatography coupled with mass spectrometry. The major compounds identified in Clausena dentata (Willd.) M. Roem. were α-pinene (21.7%), sabinene (18.3%) and β-myrcene (14.3%). Clausena dimidiata Tanaka comprised mainly of safrole (56.9%) and α-terpinolene (22.1%). However, 1-menthone (70.6%) and β-phellandrene (13.0%) were the most abundant compounds of Clausena indica (Dalz.) Oliver. Sesquiterpene compounds represented mainly by β-caryophyllene (16.7%), spathulenol (11.9%) and bicyclogermacrene (7.5%) were the major constituents of Clausena excavata Burm. f., while those of Clausena engleri Tanaka include bicycloelemene (12.1%), bicyclogermacrene (11.0%) and (E)-nerolidol (6.6%). This is the first report on the chemical analysis of essential oils of C. dimidiata and C. engleri.
authors.affiliation: a Faculty of Biology, Vinh University , 182-Le Duan, Vinh City , Nghe An Province , Vietnam.
authors.forename: Hoang D
authors.initials: HD
authors.lastname: Trung
authors.forename: Tran D
authors.initials: TD
authors.lastname: Thang
authors.forename: Pham H
authors.initials: PH
authors.lastname: Ban
authors.forename: Tran M
authors.initials: TM
authors.lastname: Hoi
authors.forename: Do N
authors.initials: DN
authors.lastname: Dai
authors.forename: Isiaka A
authors.initials: IA
authors.lastname: Ogunwande
mesh_terms: D000080462:Acyclic Monoterpenes; D000081008:Bicyclic Monoterpenes; D002849:Chromatography, Gas; D054700:Clausena / Q000737:chemistry* / Q000235:genetics; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes / Q000032:analysis; D039821:Monoterpenes / Q000032:analysis; D018515:Plant Leaves / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry*; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes / Q000032:analysis; D013729:Terpenes / Q000032:analysis; D014744:Vietnam
chemical_list: D000080462:Acyclic Monoterpenes; D000081008:Bicyclic Monoterpenes; D000081005:Cyclohexane Monoterpenes; D053138:Cyclohexenes; D039821:Monoterpenes; D010938:Plant Oils; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; D013729:Terpenes; C008574:beta-myrcene; C058582:beta-phellandrene; C035127:sabinene; C013258:spathulenol; C024714:caryophyllene; C005451:alpha-pinene; C027009:terpinolene; C037055:nerolidol
keywords: Clausena dentata; Clausena dimidiata; Clausena engleri; Clausena excavata; Clausena indica; essential oil; terpenes