294665-21-7Relevant academic research and scientific papers
A Convenient 5-exo-dig Cyclization Route to Diastereomerically Pure Methyl (2S)-2-(1-benzyl-3-oxo-1,3-dihydro-2H-isoindol-2-yl)-3-methylbutanoate
Jain, Arvind Kumar,Nighot, Dnyaneshwar,Rawat, Varun,Singh, Mandeep
, p. 1370 - 1374 (2020)
[Figure not available: see fulltext.] A robust method toward the synthesis of diastereomerically pure methyl (2S)-2-(1-benzyl-3-oxo-1,3-dihydro-2H-isoindol-2-yl)-3-methylbutanoate has been described. The key reactions in the synthesis are: HATU-mediated coupling, Pd-catalyzed Sonogashira coupling, base-mediated 5-exo-dig cyclization, and catalytic hydrogenation. The diastereomeric mixture is subjected to trituration with heptane to furnish both diastereomers in moderate yields. The relative stereochemistry was confirmed by the single crystal X-ray diffractometry. The key feature of the method is the simplicity of the diastereomeric separation.
Novel L-arginine derivatives as aminopeptidase N inhibitors: design, chemistry, and pharmacological evaluation
Mou, Jiajia,Luan, Yepeng,Chen, Danghui,Wang, Qiang
, p. 3015 - 3025 (2017/10/06)
Considering the important roles played in tumor, aminopeptidase N has been an appealing target for anti-tumor drug development. Here, a serial of novel aminopeptidase N inhibitors with L-arginine scaffold were designed, synthesized and evaluated for aminopeptidase N inhibitory activities. The preliminary anti-enzyme activity assay demonstrated that compounds 5e, 5h, 11e, 11g, and 11h showed comparable activities with the positive control bestatin, an approved aminopeptidase N inhibitor. In vitro anti-proliferation assay, compound 5f showed excellent activities against four kinds of tumor cells which overexpress aminopeptidase N. In vivo anti-metastasis assay, compounds 5f and 11g exhibited better activities than bestatin. So 5f and 11g should be lead compounds as novel aminopeptidase N inhibitors for further development.
Design, synthesis and primary activity assay of bi- or tri-peptide analogues with the scaffold l-arginine as amino-peptidase N/CD13 inhibitors
Mou, Jiajia,Fang, Hao,Liu, Yingzi,Shang, Luqing,Wang, Qiang,Zhang, Lei,Xu, Wenfang
scheme or table, p. 887 - 895 (2010/05/02)
A series of bi- or tri-peptide analogues with the scaffold l-arginine were designed, synthesized and evaluated for their inhibitory activities against amino-peptidase N (APN) and metalloproteinase-2 (MMP-2). The primary activity assay showed that all the compounds exhibited higher inhibitory activities against APN than MMP-2. Within this series, compounds C6 and C7 (IC50 = 4.2 and 4.3 μM) showed comparable APN inhibitory activities with the positive control bestatin (IC50 = 3.8 μM).
Highly effective, easily accessible screw-sense-determining end group in the asymmetric polymerization of 1,2-diisocyanobenzenes
Suginome, Michinori,Collet, Sylvain,Yoshihiko, Ito
, p. 351 - 354 (2007/10/03)
Enantiopure helical poly(quinoxaline-2,3-diyl) was formed stereoselectively in the polymerization of 1,2-diisocyanobenzene using a new organopalladium initiator bearing the (4S,5S)-N-acyl-4,5-dihydro-4,5-diphenyl-1H-imidazol-2-yl group as the polymer-end screw-sense-determinant.
Efficient Synthesis of Chiral Isoquinoline and Pyrido[1,2-b]-isoquinoline Derivatives via Intramolecular Heck Reactions
Sanchez-Sancho, Francisco,Mann, Enrique,Herradon, Bernardo
, p. 360 - 368 (2007/10/03)
The palladium(0)-catalyzed reaction of derivatives of γ-amino-α,β-unsaturated esters bearing an N-(2-iodobenzoyl) substituent results in an intramolecular Heck reaction, the outcome of which depends on the structure of the substrate as well as on the expe
Synthesis and reactions of amino acid-derived benziodazole oxides: New chiral oxidizing reagents
Zhdankin, Viktor V.,Smart, Jason T.,Zhao, Peng,Kiprof, Paul
, p. 5299 - 5302 (2007/10/03)
The novel benziodazole oxides (3) can be prepared by oxidation of the readily available 2-iodobenzamides (5 or 6) with potassium bromate. Benziodazole oxides can find practical application as selective oxidizing reagents analogous to the widely used Dess-
