Synthesis of 7-Ethyl-10-hydroxycamptothecin and Proposed Reaction Mechanism

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The improved 3-step preparation of a key antitumor agent, 7-ethyl-10-hydroxycamptothecin(SN-38), which consists of ethylation, oxidation and photo-chemical rearrangement, is described. The proposed reaction mechanism is also discussed.
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农业发展靠科技,科技进步靠人才。安岳县农业人口达140万,人口资源丰富而人才资源相对缺乏,正是安岳县经济和社会发展中的一个突出矛盾。笔者通过调研安岳县农业科技人才队伍
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