High-Affinity “Click” RGD Peptidomimetics as Radiolabeled Probes for Imaging α<sub>v</sub>
β<sub>3</sub>
Integrin
作者:Monica Piras、Andrea Testa、Ian N. Fleming、Sergio Dall'Angelo、Alexandra Andriu、Sergio Menta、Mattia Mori、Gavin D. Brown、Duncan Forster、Kaye J. Williams、Matteo Zanda
DOI:10.1002/cmdc.201700328
日期:2017.7.20
αIIb β3 receptors was investigated by molecular modeling simulations. Lead compound 12 was successfully radiofluorinated and used for in vivo positronemissiontomography/computed tomography (PET/CT) studies in U87 tumor models, which showed only modest tumor uptake and retention, owing to rapid excretion. These results demonstrate that the novel click RGD mimics are excellent radiolabeledprobes for in vitro
This invention relates to 2-substituted and 2,6-disubstituted penem compounds of the formula ##STR1## wherein Y is hydrogen, halo or certain organic radicals and X represents certain hetero-interrupted substituted alkyl radicals. Also included in the invention are pharmaceutically acceptable salts of the above compounds and derivatives of the above compounds in which the carboxyl group at the 3-position is protected as by an easily removable ester protecting group. The compounds of the present invention are potent antibacterial agents or are of use as intermediates in the preparation of such agents.
Antibacterial agents, and 4-thio azetidinone intermediates
申请人:Bristol-Myers Company
公开号:US04272437A1
公开(公告)日:1981-06-09
This invention relates to 2-substituted and 2,6-disubstituted penem compounds of the formula ##STR1## wherein Y is hydrogen, halo or certain organic substituents and X represents certain organic substituents. Also included in the invention are pharmaceutically acceptable salts of the above compounds and derivatives of the above compounds in which the carboxyl group at the 3-position is protected as by an easily removable ester protecting group. The compounds of the present invention are potent antibacterial agents or are of use as intermediates in the preparation of such agents.
Enantioconvergent Amination of Racemic Tertiary C–H Bonds
作者:Kai Lang、Chaoqun Li、Isaac Kim、X. Peter Zhang
DOI:10.1021/jacs.0c11103
日期:2020.12.9
successfully applied to devise Co(II)-basedcatalyticsystem for enantioconvergent radical amination of racemic tertiary C(sp3)-H bonds. The key to the success of the radical process is the development of Co(II)-based metalloradical catalyst with fitting steric, electronic, and chiral environments of the D2-symmetric chiral amidoporphyrin as the supporting ligand. The existence of optimal reaction temperature
A PNIPAM-based fluorescent nanothermometer with ratiometric readout
作者:Chun-Yen Chen、Chao-Tsen Chen
DOI:10.1039/c0cc04450d
日期:——
A novel molecular thermometer with ratiometric fluorescence readout was designed and synthesized. Within a sensing temperature range of 33 to 41 °C, the fluorescence color of the nanothermometer changes from blue to green. The ratiometric change magnitude is about 8.7-fold, rendering the visual differentiation of color by the naked eyes feasible.