2-Isopropylpyridine has been successfully metallated and functionalized by using potassium diisopropylamide (KDA). Subsequent functionalization has been achieved with a wide range of electrophiles and good to excellent yields have been obtained. The action of other potassium or sodium bases has also been investigated. (C) 1998 Elsevier Science Ltd. All rights reserved.
Chelation-Assisted Rhodium-Catalyzed Direct Amidation with Amidobenziodoxolones: C(sp<sup>2</sup>)–H, C(sp<sup>3</sup>)–H, and Late-Stage Functionalizations
作者:Xu-Hong Hu、Xiao-Fei Yang、Teck-Peng Loh
DOI:10.1021/acscatal.6b02015
日期:2016.9.2
Air-stable and convenient amidobenziodoxolones as an amidating reagent were disclosed to enable direct amidation on a wide range of C(sp2)–H bonds of (hetero)arenes and alkenes, as well as unactivated C(sp3)–H bonds under RhIII catalysis. The approach to access 49 examples of structurally diverse amides is featured by mild conditions, complete chemoselectivity and regioselectivity, broad substrate scope
FUNCTIONALIZED HETEROCYCLIC COMPOUNDS AS ANTIVIRAL AGENTS
申请人:Enanta Pharmaceuticals, Inc.
公开号:US20210292320A1
公开(公告)日:2021-09-23
The present invention discloses compounds of Formula (I), or pharmaceutically acceptable salts, thereof:
which inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV life cycle of the hepatitis B virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HBV infection. The invention also relates to methods of treating an HBV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
The present invention relates to a process to prepare a benzimidazole derivative useful as a medicament, an intermediate for preparing the medicament, and a process to prepare the intermediate.
Rhodium(III)-Catalyzed Activation of C sp 3H Bonds and Subsequent Intermolecular Amidation at Room Temperature
作者:Xiaolei Huang、Yan Wang、Jingbo Lan、Jingsong You
DOI:10.1002/anie.201504507
日期:2015.8.3
Disclosed herein is a RhIII‐catalyzed chelation‐assisted activation of unreactive CH bonds, thus enabling an intermolecular amidation to provide a practical and step‐economic route to 2‐(pyridin‐2‐yl)ethanamine derivatives. Substrates with other N‐donor groups are also compatible with the amidation. This protocol proceeds at roomtemperature, has a relatively broad functional‐group tolerance and high
The present invention relates to a process to prepare a benzimidazole derivative useful as a medicament, an intermediate for preparing the medicament, and a process to prepare the intermediate.