flask with 170 ml of absolute ethanol the solution was stirred under a blanket of nitrogen until clear then the flask was connected to a balloon containing hydrogen and stirring was continued for 24 hours under hydrogen and nitrogen the solution was filtered and concentrated under vacuum the solid compound 4 was dissolved in methanol and filtered the solution was made acidic with concentrated hydrochloric acid cooled and the solid collected by filtration the solid was dissolved in hot methanol charcoal was added and the solution was filtered the solid compound 5 was dissolved in boiling water cooled and made basic using 20 sodium hydroxide the base was mixed with water and acidified with methane sulfonic acid cooled and the salt removed by filtration the solid was recrystallized from boiling methanol to obtain compound 6 the final yield and melting point for the product of step b the product of the above reaction scheme compound 6 was found to have the following structure another preferred embodiment of the present invention designated compound 7 may be synthesized according to the following scheme in a 500 ml flask 5 sodium hypochlorite solution was added and cooled to 10 u00b0 c while stirring 1 5 g of compound 4 described in example 1 was added all at once this solution was stirred continuously for 22 hours the resulting yellowish solid was removed by filtration and washed with water it was recrystallized using boiling acetonitrile filtered while hot and allowed to cool in an ice bath the resulting slightly yellowish solid was removed by filtration and dried the product of the above reaction scheme compound 7 was found to.