- SULFONAMIDE DERIVATIVE AND PHARMACEUTICAL COMPOSITION CONTAINING THE SAME
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PROBLEM TO BE SOLVED: To provide a novel compound having an integrin α4 inhibiting action. SOLUTION: A sulfonamide derivative or pharmaceutically acceptable salt thereof has a structure represented by a general formula (I) using specific substituents A an
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Paragraph 0036
(2019/03/28)
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- A copper-based shuttling [2]rotaxane with two bidentate chelates in the axis: Steric control of the motion
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Contrary to most of the other molecular machines based on copper-complexed catenanes or rotaxanes made and investigated in Strasbourg, the present report is dealing with a molecular shuttle for which the copper centre is complexed to two bidentate chelates, regardless of the state of the shuttle. In other words, the axis contains a sterically hindering bidentate chelate, namely a 2,9-diphenyl-1,10-phenanthroline (dpp) derivative, and another but less hindering bidentate chelate, 2,2′-bipyridine (bipy). The synthesis of the [2]rotaxane involves 15 individual chemical steps, excluding the preparation of the macrocyclic component of the [2]rotaxane. The threaded macrocycle is a 39-membered ring which incorporates an endocyclic but non sterically hindering chelate of the 8,8′-diphenyl-3,3′-biisoquinoline family (dpbiiq). The electrochemically-induced gliding motion of the copper-complexed ring from the dpp "station" to the bipy "station" and vice versa is fast on the cyclic voltammetry timescale (milliseconds). The copper(i) state is preferably located on the dpp unit whereas, by oxidising the copper(i) centre to its divalent state, the translation motion takes place to afford the thermodynamically most stable state now involving the bipy chelate.
- Collin, Jean-Paul,Durola, Fabien,Lux, Jacques,Sauvage, Jean-Pierre
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- Cyclic [2]pseudorotaxane tetramers consisting of two rigid rods threaded through two bis-macrocycles: Copper(I)-templated synthesis and X-ray structure studies
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Variously substituted coordinating rigid rods have been synthesized which incorporate a central 4,7-phenanthroline nucleus attached to two 2-pyridyl groups via its 3 and 8 positions, so as to yield bisbidentate chelates, the two-coordinating axes of the chelates being parallel to one another. Regardless of the nature of the substituents borne by the rods, the copper(I)-induced threading reaction of two such rods through the rings of two bis-macrocycles affords in a quantitative yield the 4-copper(I) threaded assembly. The [2]pseudorotaxane tetramers thus obtained have been fully characterized in solution and, for one of them, an X-ray structure could be obtained, confirming the threaded nature of the complex and providing important structural information.
- Frey, Julien,Tock, Christian,Collin, Jean-Paul,Heitz, Valerie,Sauvage, Jean-Pierre,Rissanen, Kari
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p. 11013 - 11022
(2009/02/05)
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- Pyridinyl-2-cyclopenten-1-ones as selective cyclooxygenase-2 inhibitors
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The invention encompasses the novel compound of Formula I as well as a method of treating COX-2 mediated diseases comprising administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound of Formula I.
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