Vinylogous nitroaldol (Henry) reaction using 3,5-diethyl-4-nitroisoxazole and carbonyl compounds
摘要:
3,5-Diethyl-4-nitroisoxazole reacted with carbonyl compounds in the presence of an amine catalyst. The vinylogous nitroaldol adducts were isolated in good yields. (C) 2008 Elsevier Ltd. All rights reserved.
Development of Gold-catalyzed [4+1] and [2+2+1]/[4+2] Annulations between Propiolate Derivatives and Isoxazoles
作者:Rajkumar Lalji Sahani、Rai-Shung Liu
DOI:10.1002/anie.201610665
日期:2017.1.19
new gold‐catalyzed annulations of isoxazoles with propiolates have been developed. Most isoxazoles follow an initial O attack on the alkyne to afford a [4+1] annulation product. This process results in a remarkable alkyne cleavage of initial propiolates. Unsubstituted isoxazoles proceed through an N attack step to yield formal [2+2+1]/[4+2] annulation products. These two annulation products arise initially
The present invention is directed to novel compounds, to a process for their preparation, their use in therapy and pharmaceutical compositions comprising the novel compounds.
本发明涉及新化合物,以及用于它们制备的方法,它们在治疗中的应用以及包含这些新化合物的药物组合物。
ANTI-ENTEROVIRUS 71 THIADIAZOLIDINE DERIVATIVE
申请人:JIANGSU KANION PHARMACEUTICAL CO. LTD
公开号:US20170066732A1
公开(公告)日:2017-03-09
Disclosed is a novel anti-enterovirus 71 (EV71) 1,2,5-thiadiazolidine-1,1-dioxide derivative or a pharmaceutically acceptable salt thereof; and specifically, a compound represented by formula (II) or a pharmaceutically acceptable salt thereof.
Gold‐Catalyzed Iminations of Terminal Propargyl Alcohols with Anthranils with Atypical Chemoselectivity for C(1)‐Additions and 1,2‐Carbon Migration
作者:Manisha Skaria、Sayaji Arjun More、Tung‐Chun Kuo、Mu‐Jeng Cheng、Rai‐Shung Liu
DOI:10.1002/chem.201905283
日期:2020.3.18
This work reports gold‐catalyzed iminations of terminal propargyl alcohols with anthranils or isoxazoles to yield E‐configured α‐amino‐2‐en‐1‐ones and ‐1‐als with complete chemoselectivity. These catalytic iminations occur exclusively with C(1)‐nucleophilic additions on terminal alkynes, in contrast to a typical C(2)‐route. For 3,3‐dialkylprop‐1‐yn‐3‐ols, a methyl substituent is superior to long alkyl
1,2,4-TRIAZOLE ETHER DERIVATIVES AS MODULATORS OF MGLUR5
申请人:DOVE Peter
公开号:US20090111857A1
公开(公告)日:2009-04-30
The present invention is directed to novel compounds, to a process for their preparation, their use in therapy and pharmaceutical compositions comprising the novel compounds.