The highest biological activities displayed by epothilone-related compounds have been found for epothilone B (1) and a derivative that was prepared en route to the natural product. Key steps in the total synthesis were a Suzuki coupling providing a trisubstituted double bond in the macrocycle and its subsequent stereoselective epoxidation with dimethyldioxirane.
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Su et al. (1997) studied this question.
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