from hexanic extract of aerial parts of peucedanum ruthenicum m. bieb (apiaceae) collected from mazandaran province of iran, four triterpenoids namely taraxasterol, y-taraxasterol, poriferasterol and b-sitosterol have been isolated by column chromatography, thin layer chromatography, and crystallization. their structures were elucidated by spectroscopic methods (uv, ir, ms, 1h and 13c-nmr).

the essential oils of peucedanum ruthenicum m. bieb. (umbelliferae) leaves, flowers and fruits were prepared by hydrodistillation and analyzed by gc and gc-ms and the composition of the three essential oils were compared. thirty-three, thirty-seven and thirty-one compounds were identified in leaves, flowers and fruits essential oils representing 89.13%, 88.66% and 76.45% of total oils respectiv...

A rapid and sensitive reversed-phase high-performance liquid chromatographic (RP-HPLC) method has been used for determination of furanocoumarins in methanolic extracts of Peucedanum tauricum Bieb. HPLC separation was performed on a C18 analytical column (250 mm × 4 mm i.d., 5-μm particles) with a methanol–water gradient as mobile phase. A second chromatographic system with an acetonitrile–water...

Three new natural coumarin substances 1, 2 and 3 (derivatives of 2',2'-dimethyl-3',4'-dihydroxydihydropyrano-5',6':6,7-coumarin) were isolated from the roots and fruits of Peucedanum arenarium W.K. On the basis of the spectral data from UV, IR, and NMR spectra of coumarin 1, named peuarenarine, it was assumed, that, it is an ester of 2',2'-dimethyl-3',4'-dihydroxy-dihydropyrano5',6' :6,7-coumar...