Chemical Investigation On The Essential Oils Of Saturfja Abyssinica And S. Punctata

A study on the essential oils of S. abyssinica (Benth.) Briq. and S. punctata (Benth.)rnBriq. was undertaken.rnThe oil of S. abyssinica was analyzed and four components have been identified. Tworncompounds, pulegone and piperitenone were isolated and characterized. Pulegonern(70-79%) was found to be the major constituent of the oil.rnThe oil of S. punctata was also analyzed and ten components have been isolated andrnidentified. These include citral a and b, geranyl acetate, B-caryophyllene, 3,7,10(15)germacratriene,rnnerolidol, caryophyllene oxide and a-bisabolol. Citral a (40-43%) andrncitral b (30-33"!o) were found to be the major constituents of the oil. To the best of ourrnknowledge, 3,7,1 O(15)-germacratriene is a novel natural product. All the otherrncompounds are known and citral a is reported as a major constituent of Saturejarnspecies for the first time. S. punctata is placed into a new grouping calledrn"Monoterpenic aldehyde type". Literature survey showed that there is no previousrnwork on the chemical investigation of S. abyssinica and S. punctata.rnThe elucidations of the structures are based on spectroscopic techniques and byrncomparison of these data with those reported in the literature

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