Rational application of self-disproportionation of enantiomers via sublimation—a novel methodological dimension for enantiomeric purifications
摘要:
The preliminary results presented in this work show that an enantiomer purification approach based on SDE via sublimation can be extended to non-volatile liquid compounds such as alpha-(phenyl)ethylamine and its beta-fluoro-derivatives by way of their rational modification with a sublimation enabling tag. 3,3,3-Trifluoro-2-(trifluoromethyl)-2-methyl-propanoic acid was found to perfectly serve the role of such a modifying tag. Thus, the corresponding amides derived from the amines and the fluorinated propanoic acid were highly crystalline and reasonably volatile compounds allowing for their sublimation at room temperature under normal pressure. All of these derivatives showed substantial self-disproportionation of enantiomers (SDEs) via sublimation under kinetic conditions (on a Petri dish in the open air). These preliminary results serve as a proof of a new principle that may extend the generality of enantiomer purification via sublimation to various organic compounds with physico-chemical properties of which render them otherwise unsuitable for a sublimation procedure. In particular, the very attractive cost structure of sublimation procedure renders this approach of potentially high practical and economic efficiency. (C) 2010 Elsevier Ltd. All rights reserved.
Provided is a compound having an mPGES-1 inhibitory activity and useful for the prophylaxis or treatment of pain, rheumatism, osteoarthritis, fever, Alzheimer's disease, multiple sclerosis, arteriosclerosis, glaucoma, ocular hypertension, ischemic retinal disease, systemic scleroderma and cancer including colorectal cancer.
A compound represented by the formula [I] or a pharmaceutically acceptable salt thereof:
wherein each symbol is as defined in the SPECIFICATION.
Discovery of N-(3-(morpholinomethyl)-phenyl)-amides as potent and selective CB2 agonists
作者:Karin Worm、Damian G. Weaver、Rosalyn C. Green、Christopher T. Saeui、Doreen-Marie S. Dulay、William M. Barker、Joel A. Cassel、Gabriel J. Stabley、Robert N. DeHaven、Christopher J. LaBuda、Michael Koblish、Bernice L. Brogdon、Steven A. Smith、Roland E. Dolle
DOI:10.1016/j.bmcl.2009.07.057
日期:2009.9
benzamides were identified as a novel series of cannabinoid receptor ligands. Replacing the sulfonamide functionality and reversing the original carboxamide bond led to the discovery of N-(3-(morpholinomethyl)-phenyl)-amides as potent and selective CB2 agonists. Selective CB2 agonist 31 (Ki = 2.7; CB1/CB2 = 190) displayed robust activity in a rodent model of postoperative pain.
Benzazepinone Nav1.7 blockers: Potential treatments for neuropathic pain
作者:Scott B. Hoyt、Clare London、Hyun Ok、Edward Gonzalez、Joseph L. Duffy、Catherine Abbadie、Brian Dean、John P. Felix、Maria L. Garcia、Nina Jochnowitz、Bindhu V. Karanam、Xiaohua Li、Kathryn A. Lyons、Erin McGowan、D. Euan MacIntyre、William J. Martin、Birgit T. Priest、McHardy M. Smith、Richard Tschirret-Guth、Vivien A. Warren、Brande S. Williams、Gregory J. Kaczorowski、William H. Parsons
DOI:10.1016/j.bmcl.2007.09.032
日期:2007.11
A series of benzazepinones were synthesized and evaluated as hNa(v)1.7 sodium channel blockers. Several compounds from this series displayed good oral bioavailability and exposure and were efficacious in a rat model of neuropathic pain.
Novel sulfamoyl benzamides as selective CB2 agonists with improved in vitro metabolic stability
作者:Ian Sellitto、Bertrand Le Bourdonnec、Karin Worm、Allan Goodman、Markku A. Savolainen、Guo-Hua Chu、Christopher W. Ajello、Christopher T. Saeui、Lara K. Leister、Joel A. Cassel、Robert N. DeHaven、Christopher J. LaBuda、Michael Koblish、Patrick J. Little、Bernice L. Brogdon、Steven A. Smith、Roland E. Dolle
DOI:10.1016/j.bmcl.2009.10.062
日期:2010.1
A lead optimization campaign in our previously reported sulfamoyl benzamide class of CB2 agonists was conducted to improve the in vitro metabolic stability pro. le in this series while retaining high potency and selectivity for the CB2 receptor. From this study, compound 14, N-(3,4-dimethyl-5-(morpholinosulfonyl)phenyl)-2,2-dimethylbutanamide, was identified as a potent and selective CB2 agonist exhibiting moderate in vitro metabolic stability and oral bioavailability. Compound 14 demonstrated in vivo efficacy in a rat model of post-surgical pain. (C) 2009 Elsevier Ltd. All rights reserved.
New Sterically Driven Mode for Generation of Helical Chirality
作者:Hisanori Ueki、Vadim A. Soloshonok
DOI:10.1021/ol900357d
日期:2009.4.16
The presented results and the available literature data convincingly suggest that there is a new sterically driven mechanism for the formation of supramolecular helicity in the solid state. This mechanism requires the presence of sterically bulky groups, such as tert-butyl, for which the spiral arrangement in uninterrupted hydrogen-bonding chains, serving as an axis for helical structure and maximizing the repulsive stereochemical interactions, provide for the most efficient, spatially economical accommodation of these groups in a crystallographic unit cell.