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用不对称二羟基化反应合成(S)-美托洛尔

Synthesis of (S)-metoprolol by Asymmetric Dihydroxylation
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摘要 在K2CO3存在下,4-(2-甲氧乙基)苯酚与烯丙基溴反应制得烯丙基[4-(2-甲氧乙基)苯基]醚(2);以廉价易得的双金鸡纳碱衍生物1,4-双(9-O-奎尼定)-2,3-二氮杂萘为手性配体催化2的不对称二羟基化反应制得(S)-3-[4-(2-甲氧乙基)苯氧基]-1,2-丙二醇(3,86%ee);3经"一锅法"转化为(S)-3-[4-(2-甲氧乙基)苯氧基]-1,2-环氧丙烷(4);4与异丙胺发生亲核开环反应合成了选择性β1-受体阻滞剂——(S)-美托洛尔,总产率46%(以2计算),其结构经1H NMR表征。 Allyl 4-(2-methoxyethyl)phenyl ether(2) was prepared from 4-(2-methoxyethyl)phenol and allyl bromide in the presence of K2CO3.(S)-3-[4-(2-methoxyethyl)phenoxy]-1,2-propanediol(3,86%ee) was obtained by asymmetric dihydroxylation of 2 with the readily accessible bis-cinchona alkaloid derivative 1,4-bis(9-O-quinidine)phthalazine as the chiral ligand.3 converted into(S)-[4-(2-methoxyethyl)phenoxy]methyloxiriane(4) by one-pot method.(S)-metoprolol in overall yield of 46%(from 2) was synthesized by nucleophilic ring-opening reaction of 4 with isopropylamine.The structures were characterized by 1H NMR.
出处 《合成化学》 CAS CSCD 北大核心 2011年第1期127-129,132,共4页 Chinese Journal of Synthetic Chemistry
基金 湖南省自然科学基金资助项目(09JJ5007)
关键词 选择性1β-受体阻滞剂 (S)-美托洛尔 不对称二羟基化反应 金鸡纳碱衍生物 药物合成 selective β1-blocker (S)-metoprolol asymmetric dihydroxylation cinchona alkaloid derivative drug synthesis
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参考文献12

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