N6-SUBSTITUTED ADENOSINE DERIVATIVES AND N6-SUBSTITUTED ADENINE DERIVATIVES AND USES THEREOF
申请人:Shi Jiangong
公开号:US20130045942A1
公开(公告)日:2013-02-21
The present invention provides N
6
-substituted adenosine derivatives and N
6
-substituted adenine derivatives, manufacturing methods thereof, a pharmaceutical composition comprising the said compounds above, and uses of these compounds in manufacturing medicaments and health-care products for treating insomnia, convulsion, epilepsy, and Parkinson's diseases, and preventing and treating dementia.
Synthesis of <i>N</i>-Trifluoromethanesulfinyl Ketimines by Cascade Trifluoromethylthiolation/Rearrangement of Ketoximes
作者:Bora Kim、Junho Park、Chang-Woo Cho
DOI:10.1021/acs.orglett.1c01338
日期:2021.6.18
A new and efficient cascade electrophilic trifluoromethylthiolation/radical rearrangement reaction of ketoximes is reported using N-trifluoromethylthio-dibenzenesulfonimide as the SCF3 source without any additives. This simple one-pot reaction provides the corresponding N-trifluoromethanesulfinyl ketimine products in good yields with high E selectivity under mild reaction conditions.
Copper‐Catalyzed Aza‐Sonogashira Cross‐Coupling To Form Ynimines: Development and Application to the Synthesis of Heterocycles
作者:Rémi Lavernhe、Rubén O. Torres‐Ochoa、Qian Wang、Jieping Zhu
DOI:10.1002/anie.202110901
日期:2021.11.2
AbstractNitrogen‐substituted alkynes, such as ynamines and ynamides, are versatile synthetic building blocks. Ynimines bearing additional nucleophilic and electrophilic centers relative to ynamines and ynamides are expected to have high synthetic potential. However, their chemical reactivity remains unexplored owing mainly to the lack of synthetic accessibility. We report herein a versatile copper‐catalyzed synthesis of ynimines from readily available O‐acetyl ketoximes and terminal alkynes. A wide range of O‐acetyl ketoximes derived from diaryl ketones, aryl alkyl ketones and dialkyl ketones underwent cross‐coupling with a diverse set of terminal alkynes to afford the ynimines in good to excellent yields. An unprecedented [5+1] heteroannulation reaction exploiting the reactivity of the ynimine generated in situ was subsequently developed for the synthesis of medicinally important heterocycles, including isoquinolines, azaindoles, azabenzofurans, azabenzothiophenes and carbolines.