114812-37-2Relevant academic research and scientific papers
Synthesis of chiral triazine coupling reagents based on esters of n-alkylproline and their application in the enantioselective incorporation of d or l amino acid residue directly from racemic substrate
Kasperowicz-Frankowska, Katarzyna,Gzik, Anna,Dziemidkiewicz, Michal,Kolesi-Ska, Beata,Kamiski, Zbigniew J.
, p. 994 - 1003 (2015/02/02)
Esters of N-methylproline and N-allylproline were prepared and used as component for synthesis of chiral triazine based coupling reagents. N-Triazinylammonium tetrafluoroborate obtained from methylester of L-N-methylproline, 2-chloro-4,6-dimethozxy-1,3,5-
In vitro affinities of various halogenated benzamide derivatives as potential radioligands for non-invasive quantification of D2-like dopamine receptors
Stark, Daniela,Piel, Markus,Huebner, Harald,Gmeiner, Peter,Gruender, Gerhard,Roesch, Frank
, p. 6819 - 6829 (2008/03/27)
Benzamide derivatives as radiotracers have played an important role in diagnosing malfunction in dopaminergic neurotransmission. A variety of halogenated and two unsubstituted benzamide derivatives were synthesised and their in vitro affinities to dopaminergic, serotonergic and adrenergic receptors and their lipophilicities were determined. As references IBZM (3), raclopride (4) and FLB457 (5) were tested as well. The two iodinated compounds NAE (27) and NADE (28) displayed Ki values of 0.68 and 14 nM for the D2 receptor. The well-established radiotracers FP (1) and DMFP (2) showed affinities in the same range as did the brominated compounds NABrE (29) and NABrDE (30). The log D7.4 values of 2.91 for NAE (27) and of 2.81 for NADE (28) are in the range of those found for IBZM (3), FP (1) and DMFP (2). These facts allow to expect good properties for the two iodinated compounds NAE (27) and NADE (28) regarding in vivo imaging with SPECT.
EFFICIENT STEREOCONSERVATIVE SYNTHESIS OF 1-SUBSTITUTED (S)- AND (R)-2-AMINOMETHYLPYRROLIDINES AND INTERMEDIATES THERETO
-
, (2008/06/13)
Stereoconservative method for preparation of an (R)- or (S)-isomer of the compound of the formula I with at least 95% optical purity wherein R1 is a hydrogen atom, a saturated or unsaturated lower alkyl group, a cycloalkyl group, or a group (CH2)m Ph wherein m is 0-3 and Ph is a substituted or unsubstituted phenyl group including 1) O,N-dialkylation, directly or stepwise of (R)- or (S)-proline 2) aminolysis 3) reduction to formation of the (R)- or (S)-isomer of the compound of the formula I, and new intermediates II and III in optical active form obtained by the reaction steps above and wherein R2 is defined as R1 above.
Efficient Stereoconservative Syntheses of 1-Substituted (S)- and (R)-2-Aminomethylpyrrolidines
Hoegberg, Thomas,Raemsby, Sten,Stroem, Peter
, p. 660 - 664 (2007/10/02)
Three-step stereoconservative syntheses of chiral 1-substituted 2-aminomethylpyrrolidines with high optical purities from D- or L-proline are described.The key intermediates, 1-substituted prolinamides, were obtained by N,O-dialkylation of proline followed by ammonolysis or by 1-alkylation of prolinamide.Reduction furnished the optically pure (about 99percent e.e.) pyrrolidine derivatives, which are useful as intermediates in the preparation of antipsychotic substituted benzamides.
