Chemoselective Oxidation of Equatorial Alcohols with N-Ligated λ<sup>3</sup>-Iodanes
作者:Myriam Mikhael、Sophia A. Adler、Sarah E. Wengryniuk
DOI:10.1021/acs.orglett.9b02018
日期:2019.8.2
of nitrogen-ligated (bis)cationic λ3-iodanes (N-HVIs) for alcoholoxidation and their unprecedented levels of selectivity for the oxidation of equatorial over axial alcohols. The conditions are mild, and the simple pyridine-ligated reagent (Py-HVI) is readily synthesized from commercial PhI(OAc)2 and can be either isolated or generated in situ. Conformational selectivity is demonstrated in both flexible
An efficient and unprecedented palladium‐catalyzed S‐glycosylation reaction of a range of alkenyl and alkynyl halides by using thiosugars as nucleophile partners has been established. With palladium diacetate in combination with Xantphos as the catalytic system, a variety of β‐alkenylthioglycosides as well as β‐alkynylthioglycosides can be prepared in good to excellent yields. The efficiency of this
[EN] HETEROCYCLIC COMPOUNDS FOR MODULATING NR2F6<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES POUR LA MODULATION DE NR2F6
申请人:TES PHARMA S R L
公开号:WO2021170658A1
公开(公告)日:2021-09-02
The present disclosure relates to compounds capable of modulating the activity of NR2F6. The compounds of the disclosure may be used in methods for the prevention and/or the treatment of diseases and disorders associated with modulating NR2F6 activity.
Indole Diterpene Synthetic Studies: Development of a Second-Generation Synthetic Strategy for (+)-Nodulisporic Acids A and B
作者:Amos B. Smith、László Kürti、Akin H. Davulcu、Young Shin Cho、Kazuyuki Ohmoto
DOI:10.1021/jo062423a
日期:2007.6.1
A second-generationstrategy for construction of (+)-nodulisporic acids A and B based on the development of a new, effective modular indolesynthesis exploiting a sequential Stille cross-coupling/Buchwald−Hartwig union/cyclization tactic is disclosed. This strategy evolved due to the considerable acid instability of the C(24) hydroxyl group observed in several advanced intermediates during our first-generation
(Poly)cationic λ<sup>3</sup>
-Iodane-Mediated Oxidative Ring Expansion of Secondary Alcohols
作者:Jennifer C. Walters、Anthony F. Tierno、Aimee H. Dubin、Sarah E. Wengryniuk
DOI:10.1002/ejoc.201800118
日期:2018.3.29
methodology for late-stage naturalproduct derivatization was also demonstrated, providing a new tool for diversity-oriented synthesis and complexity-to-diversity (CTD) efforts. Preliminary mechanistic investigations reveal a strong effect of alcohol conformation on reactive pathway, thus providing a predictive power in the application of this approach to complex molecule synthesis.
在此,我们报告了一种通过仲醇与(聚)阳离子λ3-碘(N-HVI)的亲电活化合成中环醚的简化方法。通过新型 2-OMe-吡啶连接的 N-HVI 的独特反应性,在已建立的 α-消除途径上实现了 CO 键迁移的优异水平选择性。所得的 HFIP-缩醛很容易用一系列亲核试剂衍生化,为后续操作提供了多功能的功能手柄。还证明了这种方法在后期天然产物衍生化中的实用性,为面向多样性的合成和复杂性到多样性(CTD)工作提供了新工具。初步的机理研究揭示了醇构象对反应途径的强烈影响,从而为该方法应用于复杂分子合成提供了预测能力。