<P> Over the three decades after the discovery of erythromycin A and its activity as an antimicrobial, many attempts were made to synthesize it in the laboratory . The presence of 10 stereospecific carbons and several points of distinct substitution has made the total synthesis of erythromycin A a formidable task . Complete syntheses of erythromycins' related structures and precursors such as 6 - deoxyerythronolide B have been accomplished, giving way to possible syntheses of different erythromycins and other macrolide antimicrobials . Woodward successfully completed the synthesis of erythromycin A . </P> <Ul> <Li> Azithromycin </Li> <Li> Carbomycin </Li> <Li> Cethromycin </Li> <Li> Clarithromycin </Li> <Li> Dirithromycin </Li> <Li> Mitemcinal </Li> <Li> Oleandomycin </Li> <Li> Roxithromycin </Li> <Li> Spiramycin </Li> <Li> Telithromycin </Li> <Li> Tylosin </Li> </Ul> <P> Erythromycin was discovered by Abelardo Aguilar when working for the pharmaceutical company Eli Lilly and Company as a researcher . </P> <P> In 1949 Abelardo B. Aguilar, a Filipino scientist, sent some soil samples to his employer Eli Lilly . Eli Lilly's research team, led by J.M. McGuire, managed to isolate erythromycin from the metabolic products of a strain of Streptomyces erythreus (designation changed to "Saccharopolyspora erythraea") found in the samples . </P>

Who was the filipino doctor who discovered the antibiotic erythromycin