Seeds of melon (Cucumis melo L. Inodorus) were analyzed for their mineral and lipid compositions. The seeds showed a 30.7%lipids content and ashes accounted for 4.08%. Freshly extracted oil showed acid and peroxide values respectively 4.01 mg KOH/g and 2.25Meq (O 2)/Kg. Iodine and saponification values were 104.52 g (I 2)/100 g and 193.60 mg (KOH)/g respectively. Main fatty acids identified so far were linoleic, oleic, palmitic and stearic acids with respective contents 60.

An improved synthesis of unsaturated γ-lactams by condensation of various primary amines with 2,5-dimethoxy-2,5-dihydrofuran is described. A modified mechanism for this reaction is suggested. Synthesis of their N-α-methoxylated derivatives, as N-acyliminium ion precursors, is also reported. Finally, a short synthesis of (±)-crispine A is presented as an illustrative application.

In this paper, we report the synthesis of peptidomimetics containing oxazolidin-2-one and oxazolidine rings. The two of these heterocyclic peptidomimetics novel series were obtained from serine as starting material through an efficient intramolecular cyclization. In the case of oxazolidine, the formation of only one diastereoisomer was observed.

Phtaloylimidophenylalanyl-2-hydroxymethylaziridine has been used as a starting material to yield azomethine ylide through thermal opening and was then involved into 1,3-dipolar cycloaddition reactions.Different five-membered adducts were obtained and were fully identified. The latter might be considered useful starting materials for further functionalization to provide novel compounds of biological interest.

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