Plants from Api aceae family are commonly used for food, flavoring, fragrance and medical purposes; they are also known to be used as a household remedies sinoe antiquity. Recently, many experimental and biological investigations have been carried out in on:ler to validate the ethno-medicinal claims of plants belonging to this family. Moreover, rediscovery of this family can be responsible for launching a new generation of botanical chemicals for industrial applications. This review paper may help upcoming research activities on Apiaoeae family membersby giving up to date information on their main common features, their origins and traditional backgrounds. Furthermore, this review gathers and discusses the fragmented information described in literature concerning the chemical compoeition and the biological activities of essential oils and different extracts of some Apiaceae species, it illustrates also their potential for the development of pharmaoeutical, cosmetic products and other industrial uses. 1. General introduction Medicinal and aromatic plants have attracted the attention of re searchers worldwide as a major source of raw materials used in the pharmaceutical, cosmetic, flavor and perfumery industries. Despite the progress made in synthetic medication research, nowadays, the large numbers of drugs in use are derived from plants by applying modem technologies to traditional practices (Canter et al., 2005; Singh and Singh, 2001). Apiaceae family is one of the most important familles of flowering plants, which consists of 3780 species in 434 genera. lt is distributed throughout the world, mostly in the northem temperate regions and high altitudes in the tropics. The main common features of Apiaceae species are: aromatic herbaceous nature, altemate leaves with sheathing bases, hollow stems, small flowers, inflorescences determined in simple or compound umbel, and indehiscent fruits or seeds with oil ducts (Christensen and Brandt, 2006). This family is well known for its distinctive flavors due to the secretory cavities consisting of schizo genous oil ducts with resin, oil, or mucilage and located in the fruits, stems, leaves and roots (Berenba um, 1990). Apiaceae family pro vides a large number of plants which are used for different purposes including nutrition, medicine, beverages, spices, repellents, staining, cosmetics, fragrances and industrial uses. Ethnomedically, several plants of this family are used as home based remedies to treat various illnesses re lated to digestive, endocrine, reproductive and respiratory systems (Aéimovié and Kostadinovié, 2015). This family is rich in phytochem icals and secondary metabolites which are potential source of drugs Table 1 Ethno-medicinal uses of Apiaceae species and chemical composition of their seeds essential oils.

The reactivity of a set of prototypical (η6-arene)tricarbonylchromium complexes bearing amino, oxazolyl, and pyridyl ancillary ligands versus [Cp*RhCl2]2 and [Cp*IrCl2]2 has been investigated. Successful cyclometalation reactions were achieved essentially in the presence of hydrated sodium acetate with planar-prochiral 2-phenylpyridine and 3-methyl-2-phenylpyridine complexes with yields ranging from 60% to 92%. The most salient feature of the reported reactions is their stereoselectivity, as the only diastereomers to be produced are those with the Rh- and Ir-bound chloro ligand located trans with respect to the Cr(CO)3. According to X-ray diffraction analyses, a relative rac-(pR,T-4-S) configuration may be assigned to the complexes:  the Cp* ligand sits unexpectedly syn with respect to the tricarbonylmetal moiety. Introduction of the Cr(CO)3 moiety by treatment of cycloiridated 2-phenylpyridine with tricarbonyl(η6-naphthalene)chromium resulted in a unique diastereomer of the same relative configuration. Quantum calculations using the density functional theory were carried out on models of syn and trans-chloro isomers. Owing to strong electrostatic repulsion between the chloro ligand and the Cr(CO)3 moiety, the syn-chloro isomers were found less stable by 7−8 kcal/mol than the trans counterparts, suggesting that cyclorhodation and cycloiridation reactions are thermodynamically controlled.

The goal of this paper concerns the first evaluation of two recently reported coumarins to initiate photopolymerization reactions.

ABSTRACT:The effectiveness of the interactions between various alkyl ammonium cations and the well-defined spherical Keplerate-type {Mo 132 } capsule has been tracked by 1 H DOSY NMR methodology which reveals a strong dependence of the selfdiffusion coefficient of the cationic guests balancing from the solvated to the plugging situations. Analysis of the data is fully consistent with a two-site exchange regime involving the 20 independent {Mo 9 O 9 } receptors of the capsule. Furthermore, quantitative analysis allowed determining the stability constants associated to the plugging process of the pores. Surprisingly, the affinity of the capsule for a series of cationic guests increases continuously with its apolar character as shown by the significant change of the stability constant from 370 to 6500 from NH 4 + and NEt 4 + , respectively. Such observations, supported by the thermodynamic parameters evidence that the major factor dictating selectivity in the trapping process is mainly the so-called "hydrophobic effect". Computational studies, using molecular dynamics simulations have been carried out in the conjunction of the experimental data. The analysis of the radial distribution functions g(r) reveals that NH 4 + and NMe 4 + ions behave differently in the vicinity of the capsule. The NH 4 + ions do not exhibit well-defined distributions in its close vicinity. In contrast, the NMe 4 + ions were identified as sharp distributions related to different scenario such as firmly trapped or as labile guest facing the {Mo 9 O 9 } pores. These conjugated experimental and theoretical insights should aid the exploitation of these giant polyoxometalates in solution for various applications.