Screening of chemical compounds purified from biological sources

A method of producing a chemical compound library comprising the steps of:

• (a) extracting at least one extract from at least one species of plant;
• (b) processing at least one of the at least one extract from step (a) to remove at least one type of chemical interference to produce a processed extract;
• (c) chromatographically separating the processed extract from step (b) into a plurality of chromatographic fractions, each containing an amount of chemical compounds;
• (d) determining the amount of chemical compounds in at least one of the chromatographic fractions from step (c);
• and
• (e) normalizing the chromatographic fractions in which the amounts were determined in step (d) to produce normalized chromatographic fractions, each such fraction comprising from about 1 microgram to about 500 micrograms of each of from one to seven chemical compounds that were present in lower concentrations in the extract and that each have a log P of from about −1 to about 5 and a molecular weight less than about 1000 Daltons;
• (f) thereby to produce a chemical compound library from at least one species of plant.