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A series of ~1 H NME decoupling experiments then led to the carbon skeleton of koumine.
2的相对构型系通过~1HNMR分析而判断.
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Thus , abiosynthetic model of AGPM carbon skeleton was advised to depict its biosynthesis course.
按聚酮合成机理, 提出抗生素AGPM碳骨架生物合成模型.
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