No abstract

Lavandula pubescens Decne. is one of five Lavandula species growing wild in Yemen. The plant is used in Yemeni traditional medicine, and the essential oil tends to be rich in carvacrol. In this work, L. pubescens was collected from eight different locations in Yemen, the essential oils obtained by hydrodistillation, and the oils analyzed by gas chromatography/mass spectrometry (GC/MS). Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were used to differentiate between the L. pubescens samples. The essential oils were rich in carvacrol (60.9 - 77.5%), with lesser concentrations of carvacrol methyl ether (4.0 - 11.4%), caryophyllene oxide (2.1 - 6.9%), and terpinolene (0.6 - 9.2%). The essential oil compositions in this study showed very high similarity, but it was possible to discern two separate groups based on minor components, in particular the concentrations of terpinolene, carvacrol methyl ether, m-cymen-8-ol, and caryophyllene oxide.

A New Schiff base ligand and its Pt (II) complex were synthesized. The ligand was prepared by condensation of 2-(4-isobutylphenyl)propanehydrazide with 2,3,4-trihydroxy benzaldehyde this novel ligand and its functional group was carefully designed and selected from well-known biological drugs. The structure of the ligand and its Pt-complex have been confirmed by spectroscopic data, i.e. elemental (CHN) analysis, FT-IR, electronic spectra, NMR spectra. The ligand and its Pt-complex were investigated for their in vitro anticancer potential using HeLa and PC3 cells. The Pt-complex showed a higher cytotoxic activity than the ligand towards Hela cells and PC3 cells.