[EN] MODULAR SYNTHESES OF DISCOIPYRROLE TYPE ALKALOIDS AND ANALOGUES<br/>[FR] SYNTHÈSE MODULAIRE D'ALCALOÏDES DE TYPE DISCOIPYRROLE ET ANALOGUES
申请人:THE AUSTRALIAN NAT UNIV
公开号:WO2017100819A1
公开(公告)日:2017-06-22
The present invention relates to methods for preparing a variety of discoipyrrole compounds and analogues using an oxidative cyclisation reaction as one of the steps. The present invention also relates to novel discoipyrrole analogues, pharmaceutical compositions comprising these compounds, and to their use in therapy, in particular in the treatment of disease states or conditions mediated by the discoidin domain receptor 2 (DDR2).
Electrophilic Aromatic Substitutions of Aryltrifluoroborates with Retention of the BF<sub>3</sub><sup>–</sup> Group: Quantification of the Activating and Directing Effects of the Trifluoroborate Group
contrast to common belief, substitutions at CH positions are often faster than ipso-substitutions of the BF3K group, because BF3K activates the position attached to boron by a factor of 10(3)-10(4) while adjacent CH positions are activated by factors of 10(5)-10(6). Several reactions that have previously been interpreted as ipso-substitutions actually proceed via initial substitution at a vicinal or remote
Enantioselective synthesis of α-amino esters through Petasis borono-Mannich multicomponent reaction of potassium trifluoroborate salts
作者:Mengnan Tong、Xiang Bai、Xin Meng、Jianfei Wang、Tao Wang、Xingyi Zhu、Bin Mao
DOI:10.1177/1747519819876822
日期:2019.11
Enantioselective synthesis of α-amino esters have been achieved through the Petasisborono-Mannich multicomponent reaction using (R)-BINOL-derived catalysts with stable heteroaryl and alkenyl trifluoroborate salts under mild conditions. The reaction provides direct access to optically active α-amino esters with moderate to good yields and enantioselectivities.
Regioselective Reductive Elimination from Bismuth(V) Compounds for Aryl Transfer to Nucleophiles
作者:Shuvra Debnath、Stephen G. DiMagno、Donald J. Wink、Audra G. Lemley、James M. Kelly
DOI:10.1002/adsc.202301148
日期:2024.3.8
catalyst because it is a common, inexpensive and relatively non-toxic element. Barton and coworkers used pentavalent organobismuth reagents (triphenyl and tetraphenyl) for the phenylation of phenol and enol moieties by the simultaneous bond cleavage of the bismuth-aryl ligand and bond formation between (ph)enolic oxygen and aryl group.15-17 Wittig and coworkers showed that tetraphenylbismuth(V) compounds