ABSTRACT
The chemical constituents of hydrodistilled essential oils from the leaves of four Magnoliaceae species were examined. The main compounds in Manglietia fordiana oils were δ-cadinene (18.0%), (E)-nerolidol (16.7%), α-copaene (12.8%), α-selinene (9.1%), and limonene (8.3%); in Manglietia conifera oils they were β-caryophyllene (29.9%), α-humulene (7.4%), (E)-nerolidol (6.3%), and caryophyllene oxide (5.5%). The major constituents of Michelia mediocris oil were (E)-nerolidol (36.4%), δ-cadinene (10.9%), and β-selinene (7.2%), while in Michelia tonkinensis they were α-pinene (40.3%), β-phellandrene (7.6%), β-pinene (7.4%), and bicyclogermacrene (7.3%).