##STR1## The invention relates to a method for producing epothilone B and derivatives, and to intermediate products for this method. According to the novel method, the epothilone B or derivatives are produced in high yields from the C1-C6, C7-C10 and C11-C20-fragments 2, 3 and 4 that can be obtained economically and diastereomerically purely (the variable radicals having the meanings given in the description ).

## del ## STR1 La invención se relaciona con un método para producir el epothilone B y derivados, y con los productos intermedios para este método. Según el método de la novela, el epothilone B o los derivados se produce en altas producciones del C1-C6, del C7-C10 y del C11-C20-fragments 2, 3 y 4 que se puedan obtener económicamente y diastereomerically puramente (los radicales variables que hacen los significados dar en la descripción).

 
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