The dynamic covalent chemistry of mono- and bifunctional boroxoaromatics
摘要:
10-Hydroxy-10,9-boroxophenanthrene reacts rapidly and reversibly with both benzylic and alkane diols in non-polar solvents. The formation of 2:1 adducts between the boroxoaromatic and the diols is favoured. The diol component of the adduct can be exchanged readily and rapidly by treatment of the boroxoaromatic-diol adduct with an alternative diol in solution at room temperature. This reversible covalent chemistry would appear to be ideal for the dynamic assembly of more complex superstructures. However, attempts to extend this dynamic equilibrium to the assembly of macrocycles using the bifunctional boroxoaromatic 5,9-dihydroxy-5,9-dibora-4,10-dioxopyrene failed as a result of changes in the reactivity of the boron centre in the bifunctional boron-containing compound. (c) 2006 Elsevier Ltd. All rights reserved.
Organic super-electron-donors: initiators in transition metal-free haloarene–arene coupling
作者:Shengze Zhou、Greg M. Anderson、Bhaskar Mondal、Eswararao Doni、Vicki Ironmonger、Michael Kranz、Tell Tuttle、John A. Murphy
DOI:10.1039/c3sc52315b
日期:——
heterocycle-derived organic electron donors achieve the coupling reactions and these donors can form in situ in the above cases. We show that an electron transfer route can operate either with phenanthrolines as additives or using pyridine as solvent, and we propose new heterocyclic structures for the respective electron donors involved in these cases. In the absence of additives, the coupling reactions are still
作者:Jia-Lei Yan、Yingying Cheng、Jing Chen、Ranjala Ratnayake、Long H. Dang、Hendrik Luesch、Yian Guo、Tao Ye
DOI:10.1021/acs.orglett.8b02652
日期:2018.10.5
The first total synthesis of asperphenins A and B has been accomplished in a concise, highly stereoselective fashion from commercially available materials (15 steps, 9.7% and 14.2% overall yields, respectively). The convergent route featured the judicious choice of protecting groups, fragment assembly strategy and a late-stage iron-catalyzed Wacker-type selective oxidation of an internal alkene to
The present invention provides compounds of formula (I); pharmaceutical compositions thereof, and methods of using the same, processes or preparing the same, and intermediates thereof.
本发明提供了式(I)的化合物;其制药组合物和使用方法,制备方法或中间体。
Potentiators of Glutamate Receptors
申请人:Aicher Daniel Thomas
公开号:US20080004321A1
公开(公告)日:2008-01-03
The present invention provides a compound of formula (I): pharmaceutical compositions thereof, and methods of using the same, processes for preparing the same, and intermediates thereof.
本发明提供了化合物(I)的配方:其制药组合物,使用该组合物的方法,制备该组合物的过程以及其中间体。
Potentiators of glutamate receptors
申请人:Eli Lilly and Company
公开号:US07858646B2
公开(公告)日:2010-12-28
The present invention provides compounds of formula (I); pharmaceutical compositions thereof, and methods of using the same, processes or preparing the same, and intermediates thereof.