Enantioselective Synthesis of Cyclopropanone Equivalents and Application to the Formation of Chiral β‐Lactams
作者:Christopher M. Poteat、Yujin Jang、Myunggi Jung、J. Drake Johnson、Rachel G. Williams、Vincent N. G. Lindsay
DOI:10.1002/anie.202006786
日期:2020.10.12
derivatives have long been considered unsustainable synthetic intermediates because of their extreme strain and kinetic instability. Reported here is the enantioselective synthesis of 1‐sulfonylcyclopropanols, as stable yet powerful equivalents of the corresponding cyclopropanone derivatives, by α‐hydroxylation of sulfonylcyclopropanes using a bis(silyl) peroxide as the electrophilic oxygen source. This
[EN] NOVEL COMPOUNDS FOR MODULATION OF ROR-GAMMA ACTIVITY<br/>[FR] NOUVEAUX COMPOSÉS POUR LA MODULATION DE L'ACTIVITÉ ROR-GAMMA
申请人:BIOGEN IDEC INC
公开号:WO2014028669A1
公开(公告)日:2014-02-20
The present invention relates to aryl sulfones and related compounds that are modulators of ROR-gamma receptors. The invention also provides pharmaceutical compositions comprising these modulators, and methods of modulating ROR-gamma receptors using them. Also provided are methods of using aryl sulfones and related compounds as modulators of ROR-gamma to treat ROR-gamma mediated diseases.
作者:María Jesús Cabrera-Afonso、Zhi-Peng Lu、Christopher B. Kelly、Simon B. Lang、Ryan Dykstra、Osvaldo Gutierrez、Gary A. Molander
DOI:10.1039/c7sc05402e
日期:——
employed to prepare sulfones with biological relevance (e.g., in bioconjugation, drug substance synthesis, etc.) as demonstrated in the synthesis of drug-like compounds or their precursors. When paired with existing Ni/photoredox chemistry for Csp3–Csp2 cross-coupling, an array of diverse sulfone scaffolds can be readily assembled from bifunctional electrophiles. A mechanistic manifold consistent with
该报告详细介绍了通过镍/光氧化还原双重催化构建芳基和杂芳基砜的策略的开发和实施。使用芳基亚磺酸盐,可以在室温、无碱条件下形成C-S键。一系列芳基卤化物和杂芳基卤化物与该方法兼容。所描述的反应的广泛耐受性和温和性质可以潜在地用于制备具有生物相关性的砜(例如,在生物共轭、药物物质合成等中),如在药物样化合物或其前体的合成中所证明的。当与现有的用于 C sp 3 –C sp 2交叉偶联的 Ni/光氧化还原化学配对时,可以很容易地从双功能亲电子试剂组装一系列不同的砜支架。提出了与实验和计算数据一致的机械流形。
Diastereoselective Monofluorocyclopropanation Using Fluoromethylsulfonium Salts
作者:Renate Melngaile、Arturs Sperga、Kim K. Baldridge、Janis Veliks
DOI:10.1021/acs.orglett.9b02867
日期:2019.9.6
Diarylfluoromethylsulfoniumsalts, alternatives to freons or advanced fluorinated building blocks, are bench stable and easy-to-use sources of direct fluoromethylene (:CHF) transfer to alkenes. These salts enabled development of a trans-selective monofluorinated Johnson-Corey-Chaykovsky reaction with vinyl sulfones or vinyl sulfonamides to access synthetically challenging monofluorocyclopropane scaffolds
Synthesis of arylboronates via the Pd-catalyzed desulfitative coupling reaction of sodium arylsulfinates with bis(pinacolato)diboron
作者:Di Qiu、Songyi Li、Guanglu Yue、Jinshan Mao、Bei Xu、Xinyu Yuan、Fei Ye
DOI:10.1016/j.tetlet.2021.153478
日期:2021.11
The desulfitative borylation reaction of sodium arylsulfinates with bis(pinacolato)diboron or bis(neopentylglycolato)diboron under palladium catalysis has been developed, allowing selective C-B bond formation to give arylboronates with a range of functional groups in moderate to good yields under mild reaction conditions. A gram-scale preparation as well as the cascade Suzuki-Miyaura cross-coupling