New monoterpenoid coumarins from Clausena anisum-olens.

A new O-terpenoidal coumarin from Clausena anisum-olens Merr.

A new O-terpenoidal coumarin 1, named hekumarone, was isolated from the leaves and twigs of Clausena anisum-olens Merr.(Rutaceae) collected in Hekou County in Yunnan Province, P.R. China. Structure elucidation and unambiguous NMR assignments for the title compound was carried out on the basis of 1D and 2D NMR experiments.

Clausenain B, a Phenylalanine-rich Cyclic Octapeptide from Clausena anisum-olens

Contact Toxicity and Repellency of the Main Components From the Essential Oil of Clausena anisum-olens Against Two Stored Product Insects

The essential oil of Clausena anisum-olens (Blanco) Merr. showed strong contact toxicity and repellency against Lasioderma serricorne and Liposcelis bostrychophila adults. The components of the essential oil obtained by hydrodistillation were determined by gas chromatography-mass spectrometry. It was found that the main components were myristicin (36.87%), terpinolene (13.26%), p-cymene-8-ol (1...

Chemical Constituents from the Roots of Clausena excavata and Their Cytotoxicity

Six coumarins (1-6) and twelve alkaloids (7-18) were isolated from the roots of Clausena excavata. Their structures were elucidated on the basis of spectroscopic methods. This is the first report on the isolation of compounds 1, 7 and 17 from C. excavata. Compound 1 is also the first example of an unsymmetrical dimer coumarin isolated from Clausena species. The completed assignment of C NMR spe...

Two New Sesquiterpene Coumarins, Ferusinol and Samarcandin Diastereomer, from Ferula sinaica

Re-investigation of the methylene chloride extract of the roots of Ferula sinaica gave ferusinol, a new sesquiterpene coumarin with a rare carbon skeleton, and samarcandin diastereomer. The structures elucidation were determined by MS, 1H- 13C-1D and 2D NMR spectral data.