Antioxidant and nitric oxide inhibition activities of selected Malay traditional vegetables

Bisquinolinone alkaloids from Melicope ptelefolia

A commercial sample of Cedrelopsis grevei H. Baillon from Madagascar was repeatedly chromatographed and the combined analysis of all the fractions by GC, GC–MS and 13C-NMR led to the identiﬁcation of 114 components. The major constituents were (E)-β-caryophyllene (9.3%), α-copaene (7.7%), α-selinene (5.8%), δ-cadinene (4.9%), β-selinene (4.5%), α-humulene (3.3%) and β-bisabolene (2.8%). Analysis of ﬁve other commercial samples conﬁrmed the pre-eminence of sesquiterpene hydrocarbons and exhibited a variation in the contents of the main components: ishwarane (1.0–17.4%), (E)-β-caryophyllene (1.3–12.5%), α-copaene (4.9–11.0%), β-elemene (0.2–9.6%) and α-selinene (1.1–9.4%). Copyright © 2003 John Wiley & Sons, Ltd.

Composition and chemical variability of the bark oil of Cedrelopsis grevei H. Baillon from Madagascar

Efficient one-pot synthesis of benzopyranobenzopyrans and naphthopyranobenzopyrans by domino aldol-type reaction/hetero Diels–Alder reaction of resorcinols and naphthols

Discrimination of young and mature leaves of Melicope ptelefolia using 1H NMR and multivariate data analysis

Benzopyrans from Melicope ptelefolia leaves

Investigation of leaves of Melicope ptelefolia afforded 18 2,2-dimethyl-2H-1-benzopyrans, consisting of 14 new members, including one benzodipyran and four known compounds. Their structures were established by mass and NMR spectroscopy, especially NOE and HMBC experiments. © 1997 Elsevier Science Ltd. All rights reserved

Tran Van Sung Tran Van Sung

Papers

Benzopyrans from Melicope ptelefolia leaves

Benzopyrans from Melicope ptelefolia Leaves.