Diethyl 1-(4-fluorophenyl)-3-(2-furyl)-5-oxopyrrolidine-2,2-dicarboxylate and diethyl 1-(3,4-dichlorophenyl)-3-(2-furyl)-5-oxopyrrolidine-2,2-dicarboxylate
作者:Jayanta Kumar Ray、Pranab Haldar、M. Canle L.、J. A. Santaballa、Jose Mahía
DOI:10.1107/s0108270103029111
日期:2004.3.15
The title compounds, C20H20FNO6 and C20H19Cl2NO6, respectively, may exhibit bioactivity. In these compounds, the pyrrolidine ring adopts a conformation intermediate between envelope and half-chair. Only one of the two ethoxycarbonyl side chains is nearly planar. Centrosymmetric pairs are formed, and the crystal structure is stabilized by weak C-H...O hydrogen bonds and van der Waals interactions.
Pyrimidines. IX. 4- and 5-(Substituted-anilino)pyrimidines
作者:Darrell E. O'Brien、Fred. Baiocchi、Roland K. Robins、C. C. Cheng
DOI:10.1021/jm01241a003
日期:1962.11.1
Synthesis of some thieno gamma lactam monocarboxylic acids with high antibacterial activity: A new look at an old molecular system
作者:Gandhi K. Kar、Bidhan C. Roy、Sujit Das Adhikari、Jayanta K. Ray、Nitosh K. Brahma
DOI:10.1016/s0968-0896(98)80015-1
日期:1998.12
Synthesis and antibacterial activity of some novel monocyclic thienyl gamma lactams are reported. The compounds have been synthesized by a two-step process consisting of, first, intermolecular Michael addition, followed by intramolecular amidification between suitable arylamino malonate and 3-(2'-thienyl) acryloyl chloride and then hydrolysis cum in situ decarboxylation of the diacid. The compounds