REFERENCES
- Al-Said M.S. (1990). Private communication.
- Appendino G., Tagliapietra S., Cravotto G. and Nano G. M. (1989) Structure and synthesis of a prenylated ace- tophenone from Ferula communis L. Gazz. Chim. Ital. 119: 385–388.
- Aragno M., Tagliapietra S., Nano G. M. and Ugazio G. (1988) Experimental studies on the toxicity of Ferula communis in the rat. Res. Comm. Chem. Path. Pharm. 59, 399–402.
- Bhacca N.S., Hollis D.P., Johnson L.F., Pier E. A. and Shoolery J. N. (1963) High resolution NMR spectra catalog, varian associates, National Press, U.S.A., No. 136.
- Boulos L. (1983) Medicinal plants of North Africa, Refer- ence Publications, Inc., Egypt, p. 183–184.
- Caglioti L., Naef H., Arigoni D. and Jeger O. (1958) Ses- quiterpenes and Azulenes. CXXVI. Constituents of Asafoetida. 1. Farnesiferol A. Helv. Chim. Acta 41: 2278-2292. Through CA 54: 616g (1960).
- Collenette S. (1985) Flowers of Saudi Arabia, 1st Ed. pp. 484-485, Scorpion Publishing LTD London.
- Fraga B.M. (1989) The carotane sesquiterpenes, In: Stud- ies in Natural Product Chemistry. Atta-ur-Rahman, editor, Vol. 5, pp. 721-725, Elsevier Science Publish- ers B.V., Netherlands.
- Holub M. and Budesinsky M. (1986) Sesquiterpene lac- tones of the Umbelliferae. Phytochemistry 25: 2015- 2026.
- Kajimoto T., Yahiro K. and Nohara T. (1989) Sesquiterpe- noid and disulphide derivatives from Ferula assa-foet- ida. Phytochemistry 28: 1761–1763.
- Kumamoto J. and Scora R.W. (1970) The structure of Sa- risan, an isomer of Myristicin, isolated from the leaf oil of Beilschmiedia miersii. J. Agr. Food Chem. 18: 544–545.
- Mahran G.H., El Alfy T.S.M.A. and Ansary M.A. (1975) A phytochemical study of volatile oil of Afghanian As- afoetida. Bull. Fac. Pharm., Cairo Uni. 12: 101–117.
- Martinetz D. and Lohs Kh. (1988) Asa foetida-heilmittel der Asiatischen Volksmedizin. Pharmazie 43: 720-722. Murray R.D.H., Mendez J. and Brown S.A. (1982) The Natural Coumarins pp. 555-559, John Wiley & Sons LTD.
- Nair M.G., Sommerville J. and Burke B.A. (1989) Phenyl propanoidds from roots of Piper auritum. Phytochem- istry 28: 654–655.
- Pauli A.H.A. (1995) Chemische, Physikalische und An- timikrobielle Eigenschften von in Atherischen Olen Vorkommenden Phenylpropanen. PhD thesis Universi- ty of Wurzburg, Germany, pp. 36–41.
- Stahl E. (1969) Thin layer chromatography, a laboratory handbook, p. 48, 396, George Allen & Unwin LTD London, Springer-Verlag Berlin, Heidelberg, New York.
- Trease G.E. and Evans W.C. (1983) Pharmacognosy,
- pp. 469-470, 12th Ed., Bailliere Tindall, London.
- Teresa J.P., Villaseco M.A., Hernandez J.M., Moran J.R., Urones J.G. and Grande M. (1986) Complex acetylenes from the roots of Ferula communis. Planta Med. 52: 458–462.
- Zhi-da M., Qi-fi M., Mizuno M., Tanaka T. and Iinuma M. (1987) Polysulfanes in the Volatile Oil of Ferula spe- cies. Planta Med. 53: 300–302.