4890-63-5Relevant academic research and scientific papers
Regioselective 1,4-conjugate addition of grignard reagents to nitrodienes in the presence of catalytic amounts of Zn(II) salts
Dhakal, Ramesh C.,Dieter, R. Karl
supporting information, p. 1362 - 1365 (2014/04/03)
Grignard reagents undergo facile regioselective 1,4-conjugate addition to nitrodienes in the presence of catalytic amounts of Zn(II) salts with excellent yields. A wide range of ligands such as alkyl, aryl, heteroaryl, allyl, vinyl, 1-alkynyl, and alkoxy ligands were transferred, while a thiolate ligand afforded 1,6-regioselectivity. The reactions were successfully carried out on δ-alkyl- or aryl-substituted α,β,γ,δ-diunsaturated nitrodiene substrates. Regioselectivity is minimally influenced by temperature or choice of solvent.
Regio- and stereoselective 1,2-dihydropyridine alkylation/addition sequence for the synthesis of piperidines with quaternary centers
Duttwyler, Simon,Chen, Shuming,Lu, Colin,Mercado, Brandon Q.,Bergman, Robert G.,Ellman, Jonathan A.
supporting information, p. 3877 - 3880 (2014/05/06)
The first example of C alkylation of 1,2-dihydropyridines with alkyl triflates and Michael acceptors was developed to introduce quaternary carbon centers with high regio- and diastereoselectivity. Hydride or carbon nucleophile addition to the resultant iminium ion also proceeded with high diastereoselectivity. Carbon nucleophile addition results in an unprecedented level of substitution to provide piperidine rings with adjacent tetrasubstituted carbon atoms. Pipe up: Alkylation of readily prepared 1,2-dihydropyridines with alkyl triflates and Michael acceptors introduces quaternary carbon centers with high regio- and diastereoselectivity. Hydride or carbon nucleophile addition to the resultant iminium ion also proceeds with high diastereoselectivity. For carbon nucleophile addition, an unprecedented level of substitution is achieved to provide piperidine rings with contiguous tetrasubstituted carbon atoms.
S1P RECEPTORS MODULATORS AND THEIR USE THEREOF
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Page/Page column 79, (2010/04/30)
The invention relates to novel compounds that have S1P receptor modulating activity. Further, the invention relates to a pharmaceutical comprising at least one compound of the invention for the treatment of diseases and/or conditions caused by or associated with inappropriate S1P receptor modulating activity or expression, for example, autoimmune response. A further aspect of the invention relates to the use of a pharmaceutical comprising at least one compound of the invention for the manufacture of a medicament for the treatment of diseases and/or conditions caused by or associated with inappropriate S1P receptor modulating activity or expression such as autoimmune response.
