Several novel N-substituted-salicylhydrazide ligands, most of which are difficult to be purified or recrystallized so that their chemical configurations can not be confirmed by conventional NMR and/or X-ray diffraction techniques, were synthesized in this experiment, and their chemical configurations in mixture were analyzed and characterized by 2D NMR diffusion ordered spectroscopy (DOSY), a labor-saving virtual separation based on diffusion properties, together with several routine NMR techniques.
The chemical constituents and morphological characters of the fruits of seven Labiatae plants have been studied. The results showed that the contents of fatty oils in the fruits are abundant. The main constituents of unsaturated fatty acids are α-linolenic acid, linolic acid, oleic acid, and arachidonic acid. The main constituents of saturated fatty acids are palmitic acid and stearic acid. Although different kinds of fruit oils have different content of a specific unsaturated fatty acid, the content of total unsaturated fatty acids is more than 90% of fruit oils. The fruits also contain eighteen kinds of amino acids and some mineral elements. Due to high nutritional ingredients, there is potential prospect to explore and utilize them. Their morphological characters were also discussed.
