Stereospecific 1,4‐Metallate Shift Enables Stereoconvergent Synthesis of Ketoximes
作者:Kai Yang、Feng Zhang、Tongchang Fang、Guan Zhang、Qiuling Song
DOI:10.1002/anie.201906057
日期:2019.9.16
Reported herein is a stereospecific 1,4-metallate rearrangement for single-geometry ketoxime synthesis from oxime chlorides and arylboronic acids. This strategy exhibits broad substrate scope with excellent stereoselectivity under mild reaction conditions. In comparison with the conventional approaches, each configuration of unsymmetric diaryl oximes, as well as the thermodynamically less stable Z isomer
Design, synthesis and evaluation of novel levoglucosenone derivatives as promising anticancer agents
作者:Yi-hsuan Tsai、Carla M. Borini Etichetti、Soledad Cicetti、Javier E. Girardini、Rolando A. Spanevello、Alejandra G. Suárez、Ariel M. Sarotti
DOI:10.1016/j.bmcl.2020.127247
日期:2020.7
and anhydropyranose cores have been designed and synthesized following an hetero Michael // 1,3-dipolar cycloaddition path. The use of a design of experiments approach allowed the optimization of the oxa-Michael reaction with propargyl alcohol as nucleophile, a key step for the synthesis of the target compounds. All of the compounds were tested for their anticancer activity on MDA-MB-231 cells, featuring
Die Aldoximanhydrid‐N‐oxide 2‐5 werden beschrieben und der thermische und hydrolytische Zerfall von 2 (R = H) sowie die massenspektrometrische Fragmentierung von 2 (R = Br) untersucht.
Die Aldoximanhydrid-N-oxide 2-5 werden beschrieben und der thermische und hydrolytische Zerfall von 2 (R = H) sowie die massenspektrometrische Fragmentierung von 2 (R = Br) untersucht。
Cinchonidine-Catalyzed Synthesis of Oxazabicyclo[4.2.1]nonanones from <i>N</i>-Aryl-<i>α,β</i>-unsaturated Nitrones and 1-Ethynylnaphthalen-2-ols
作者:Cui Wei、Zhou Zhou、Guang-Li Pang、Cui Liang、Dong-Liang Mo
DOI:10.1021/acs.orglett.2c01049
日期:2022.6.17
1]nonanone derivatives were prepared in good yields through a cinchonidine-catalyzed cascade reaction of N-aryl-α,β-unsaturated nitrones and 1-ethynylnaphthalen-2-ols. Mechanistic studies show that the reaction undergoes a [4 + 3] cycloaddition of nitrones to vinylidene o-quinone methide generated in situ from 1-ethynylnaphthalen-2-ols in the presence of cinchonidine, 1,3-rearrangement of N–O vinyl moieties