Historic
In the late 1980th :
discovery of the epothilones A and B by Höfle
1990-1995 :
identification of the structure of the epothilone
1996 :
determination of the absolute configuration of the epothilones A and B
1996 :
total synthesis of the epothilone A by Danishefsky
1997 :
total synthesis of the epothilone A by Nicolaou