青云英语翻译

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翻译结果1翻译结果2 翻译结果3翻译结果4翻译结果5

翻译结果1复制译文编辑译文朗读译文返回顶部

是果酸甲酯。加入2 - 碘酰基苯甲酸,齐墩果酸被氧化为12A,这是当时通过科巴克什,柴吡咯烷催化还原,沃尔夫kishner减少,Wittig反应,分别转换12B-D。比常见的反应,由于它周围的空间位阻的羟基发生酯化和醚1 3位相对更严格。 12E是乙基草酰氯酯化,然后水解得到12F。 12克-12I进行了相应的酸酐一夜之间甲苯中回流加入果酸。而12J可以轻松准备在室温下在DMF溶液与溴苄10I,与不同的羧基取代的苄溴化物应根据回流进行NAH通宵准备12K-12M的二恶烷醚化。终于,12J-12M,实现了从他们的甲基酯使用DMF溶液中回流崇礼。

翻译结果4复制译文编辑译文朗读译文返回顶部

是oleanolic酸甲酯。 添加2-iodoxybenzoic酸液,oleanolic酸被氧化且不为12a,然后它被转换成12b-d通过科里-巴克什的柴田先生pyrrolidine
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