作者:John E. Arrowsmith、Simon F. Campbell、Peter E. Cross、John K. Stubbs、Roger A. Burges、Donald G. Gardiner、Kenneth J. Blackburn
DOI:10.1021/jm00159a022
日期:1986.9
A series of dihydropyridines substituted at the 2-position by basic side chains are described and their potencies as calcium antagonists listed. One compound, 2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-3-ethoxycarbonyl-5- methoxycarbonyl-6-methyl-1,4-dihydropyridine (17, amlodipine) was found to be comparable in potency to nifedipine and to have an elimination half-life of 30 h in dogs. Oral bioavailability
obtained through the asymmetric catalytic cascade reaction between 3-amino-2-butenoates and (Z)-2-arylidene-3-oxobutanoates. The N,N′-dioxide/NiII or NdIII complex catalysts were disclosed to be efficient, furnishing a variety of the products, including drugs like nitrendipine, nimodipine, and felodipine, in high yields (up to 99% yield) with excellent enantioselectivities (up to 99% ee). Two enantiomers
Hetet, G. Le; Danion-Bougot, R.; Carrie, R., Bulletin des Societes Chimiques Belges, 1996, vol. 105, # 5, p. 259 - 272
作者:Hetet, G. Le、Danion-Bougot, R.、Carrie, R.
DOI:——
日期:——
US5760073A
申请人:——
公开号:US5760073A
公开(公告)日:1998-06-02
Cross-linked polystyrene-TiCl4 complex as a reusable Lewis acid catalyst for solvent-free Knoevenagel condensations of 1,3-dicarbonyl compounds with aldehydes
作者:Ali Rahmatpour、Niloofar Goodarzi
DOI:10.1016/j.catcom.2018.11.001
日期:2019.5
in the range of (50–80 mesh size) were prepared by a new method, characterized and functionalized with titaniumtetrachloride to afford the corresponding polystyrene‑titaniumtetrachloridecomplex in one step reaction and characterized by FT-IR, UV, TGA, DSC, XRD, SEM, BET. This polymer metal complex (PS/TiCl4) was used as a heterogeneous, recoverable, reusable Lewis acid for solvent-free Knoevenagel