Phase transfer catalyzed asymmetric alkylations of imine glycinamides
摘要:
Herein we report the use of achiral imine glycinamides as substrates for asymmetric alkylations using chiral phase-transfer catalysts for the first time. Initially tried for obtaining a key intermediate for the synthesis of levobupivacaine, we expanded the study to other N-mono and N,N-disubstituted imine glycinamides. A possible explanation for the lower enantioselectivity observed in the ease of alkylation of N-monosubstituted as compared to N,N-disubstituted glycinamides is also provided. (C) 2003 Elsevier Ltd. All rights reserved.
[EN] ADENOSINE RECEPTOR BINDING COMPOUNDS<br/>[FR] COMPOSÉS SE LIANT AU RÉCEPTEUR DE L'ADÉNOSINE
申请人:NIKANG THERAPEUTICS INC
公开号:WO2020014332A1
公开(公告)日:2020-01-16
The present invention relates to pharmaceutical compounds and compositions of Formula (I) and methods of treatment using the compounds and compositions, especially for the treatment and/or prevention of a proliferation disorder, such as cancer. Compounds of Formula (I) as further described herein are shown modulators of the adenosine A2A receptor and exhibit antiproliferative activity. Accordingly, these compounds are useful to treat proliferative disorders such as cancer, and other adenosine receptor-related conditions including an inflammatory disease, renal disease, diabetes, vascular disease, lung disease, or an autoimmune disease.
hit-to-lead optimization led to the discovery of a novel chemotype series exemplified by the trans racemic compound 11i. This series provided CXCR7 antagonists that block CXCL11- and CXCL12-induced ß-arrestin recruitment. Further structural modifications on the trisubstituted piperidine scaffold of 11i yielded compounds with high CXCR7 antagonistic activities and balanced ADMET properties. The effort described
A Cl? anion-responsive luminescent Eu3+ complex with a chiral tripod: ligand substituent effects on ternary complex stoichiometry and anion sensing selectivity
O-mixed donor tripods was prepared for luminescent Eu3+ complexes, in which the soft quinoline nitrogen, tertiary amine nitrogen, and hard amide oxygen donors were cooperatively involved. The mixed donor tripods formed more stable 1 : 1 complexes with Eu(NO3)3, La(NO3)3 and Tb(NO3)3 than the corresponding N4 donor tripods, and their Eu3+ complexes particularly exhibited anion-responsive luminescence properties
nitrogen plays a significant role in lanthanidecomplexation. The experimentally determined stability constants of complexes of the tripod with La(NO(3))(3), Eu(NO(3))(3), and Tb(NO(3))(3) were in good agreement with the theoretically calculated interaction energies. Complexation of each tripod with lanthanide triflate gave a mixture of several lanthanidecomplex species. Interestingly, the addition