METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.
方法将厚朴酚两羟基用缩酮保护,再用正己烷重结晶分离纯
。
METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.
方法将厚朴酚两羟基用缩酮保护,再用正己烷重结晶分离纯。
：以上例句、词性分类均
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