The yield of nopinic acid reached over 70.
利用水和叔丁醇的混合溶液作为反应的溶剂,用高锰酸钾氧化β-蒎烯制备诺蒎酸,考察了叔丁醇含量、高锰酸钾和碱用量以及温度对产物收率的影响。
The optimum conditions for preparing nopinic acid are: n(β-pinene) ∶n(KMnO_4) ∶n(NaOH) 1 ∶2.
研究以松节油中的β-蒎烯为原料,通过KMnO4氧化合成诺蒎酸,并对氧化反应步骤中各因素对反应的影响进行了探讨。
METHODS β-Pinene was oxidated with KMnO4 in the presence of pyridine to yield nopinic acid,then acid-catalyzed ring opened to yield dihydrocumic acid,which was hydrogenated with Pd/C and epimerizated to yield trans-4-isopropylhexanecarboxylic acid.
方法β-蒎烯经氧化得到诺蒎酸,诺蒎酸开四元环得到二氢枯茗酸,再经过催化加氢、异构得到反-4-异丙基环己烷甲酸,反-4-异丙基环己烷甲酸转变成酰氯后和D-苯丙氨酸反应得到N-(反-4-异丙基环己烷羰基)-D-苯丙氨酸,即2型糖尿病新药那格列奈的原料药。
The research progress on the triterpenoids of quinovic acid in recent years was reviewed with respect to plant resource,spectral feature and biological activity.
从植物资源、化合物骨架结构、波谱特征及生物活性等方面,综述了国内外报导的38个喹诺酸类型三萜化合物。
