Abstract
A concise route to two anti-tubulin natural products combretastatin A-4 and erianin has been developed. Combretastatin A-4 was obtained by a Perkin reaction between 3-bromo-4-methoxyphenyl acetic acid and 3,4,5-trimethoxybenzaldehyde, hydroxyl transformation, decarboxylation with a high level of cis-selectivity (cis/trans = 95/5), and erianin was obtained by subsequent hydrogenation. The overall yields of combretastatin A-4 and erianin were 37.5 and 30.8%, respectively.
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