使用新颖的不对称相转移催化的乙醇酸酯烷基化反应已实现了法呢基转移酶抑制剂苦参素A的全合成。2,5-二甲氧基苯乙酮7与金鸡尼丁催化剂9(10摩尔%)和氢氧化碱与新戊酰苄基溴8只要S -烷基化产物10以高收率(80-99%)和优异的对映选择性。TES-醚17的Baeyer-Villiger氧化,Weinreb酰胺形成和苄基格氏试剂产生了受保护的靶标。氢氧化锂和过氧化物可生成苦参素A([α] D + 8.4°),而不会异构化。
使用新颖的不对称相转移催化的乙醇酸酯烷基化反应已实现了法呢基转移酶抑制剂苦参素A的全合成。2,5-二甲氧基苯乙酮7与金鸡尼丁催化剂9(10摩尔%)和氢氧化碱与新戊酰苄基溴8只要S -烷基化产物10以高收率(80-99%)和优异的对映选择性。TES-醚17的Baeyer-Villiger氧化,Weinreb酰胺形成和苄基格氏试剂产生了受保护的靶标。氢氧化锂和过氧化物可生成苦参素A([α] D + 8.4°),而不会异构化。
[EN] PRODRUG BIPYRIDYLAMINOPYRIDINES AS SYK INHIBITORS<br/>[FR] PROMÉDICAMENT BIPYRIDYLAMINOPYRIDINES EN TANT QU'INHIBITEURS DE SYK
申请人:MERCK SHARP & DOHME
公开号:WO2014074421A1
公开(公告)日:2014-05-15
The present invention provides compounds of Formula (I), which are prodrugs of trans-4-[(1R)-(6-[4-(difluoromethyl)pyridin-2-yl]amino}-4-methyl-2,3'-bipyridin-6'-yl)-1-hydroxyethyl]cyclohexanecarboxylic acid, a potent inhibitor of Syk. The compounds are useful in the treatment and prevention of diseases mediated by the enzyme, such as asthma, COPD, rheumatoid arthritis and cancer.
Discovery and Total Synthesis of a New Estrogen Receptor Heterodimerizing Actinopolymorphol A from <i>Actinopolymorpha rutilus</i>
作者:Sheng-Xiong Huang、Emily Powell、Scott R. Rajski、Li-Xing Zhao、Cheng-Lin Jiang、Yanwen Duan、Wei Xu、Ben Shen
DOI:10.1021/ol1013526
日期:2010.8.6
receptor ERα and ERβ heterodimerization has been implicated in cancer chemoprevention. The discovery, structural elucidation, and totalsynthesis of a new natural product, actinopolymorphol A (1), from Actinopolymorpha rutilus (YIM45725) that preferentially induces ERα/β heterodimerization is reported. Totalsynthesis of 1 has allowed us to determine its absolute stereochemistry and that of a previously
雌激素受体 ERα 和 ERβ 异二聚化与癌症化学预防有关。报道了来自金红放线菌(YIM45725)的新天然产物放线多吗醇 A ( 1 )的发现、结构阐明和全合成,该产物优先诱导 ERα/β 异源二聚化。1 的全合成使我们能够确定其绝对立体化学和先前已知的脱乙酰同源物的绝对立体化学,并且1代表了以前未发现可调节 ER 功能的一类新天然产物的第一个成员。
PRODRUG BIPYRIDYLAMINOPYRIDINES AS SYK INHIBITORS
申请人:Merck Sharp & Dohme Corp.
公开号:EP2916837A1
公开(公告)日:2015-09-16
Total Synthesis of the Hydroxyketone Kurasoin A Using Asymmetric Phase-Transfer Alkylation
作者:Merritt B. Andrus、Erik J. Hicken、Jeffrey C. Stephens、D. Karl Bedke
DOI:10.1021/jo061395t
日期:2006.10.1
The total synthesis of the farnesyltransferase inhibitor kurasoin A has been achieved using a novel asymmetric phase-transfer-catalyzed glycolate alkylation reaction. 2,5-Dimethoxyacetophenone 7 with cinchonidinium catalyst 9 (10 mol %) and hydroxide base with pivaloyl benzyl bromide 8 provided S-alkylation product 10 in high yield (80−99%) and excellent enantioselectivity. Baeyer−Villiger oxidation
使用新颖的不对称相转移催化的乙醇酸酯烷基化反应已实现了法呢基转移酶抑制剂苦参素A的全合成。2,5-二甲氧基苯乙酮7与金鸡尼丁催化剂9(10摩尔%)和氢氧化碱与新戊酰苄基溴8只要S -烷基化产物10以高收率(80-99%)和优异的对映选择性。TES-醚17的Baeyer-Villiger氧化,Weinreb酰胺形成和苄基格氏试剂产生了受保护的靶标。氢氧化锂和过氧化物可生成苦参素A([α] D + 8.4°),而不会异构化。