Abstract: The present invention relates to a method for preparation of organofluoro compounds containing radioactive isotope fluorine-18. More particularly, the present invention relates to a method for preparation of primary or secondary organofluoro compound by reacting fluorine salt containing radioactive isotope fluorine-18 with primary or secondary alkyl halide or primary or secondary alkyl sulfonate in the presence of alcohol of Chemical Formula 1 as a solvent to obtain high yield of organofluoro compound. Synthesis reaction according to the present invention may be carried out under mild condition to give high yield of the organofluoro compounds and the reaction time is decreased, and thereby is suitable for the mass production of the organofluoro compounds.

Abstract: The invention relates to a method of altering hypothalamic function in an individual. The method comprises nasally administering a human vomeropherin, e.g. a pregnane or cholane steroid, or a pharmaceutical composition containing a vomeropherin, such that the vomeropherin binds to a specific neuroepithelial receptor. The steroid or steroids is/are preferably administered in the form of a pharmaceutical composition containing one or more pharmaceutically acceptable carriers. Other embodiments of the invention include pharmaceutical compositions containing the steroids.

Abstract: Lanosterols substituted in the 14 and/or 15 position(s) which are active in inhibiting lanosta-8,24-dien-3.beta.-ol 14.alpha.-methyl-demethylase activity, suppressing 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) activity, decreasing cholesterol synthesis and reducing serum cholesterol levels are disclosed.