Using isovanillin and tyramine as the initial materials,racemic galanthamine was prepared in five steps including bromination,condensation and reduction,formylation, oxidation coupling and reduction.是什么意思_Using isovanillin and tyramine as the initial materials,racemic galanthamine was prepared in five steps including bromination,condensation and reduction,formylation, oxidation coupling and reduction.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句