Synthesis and evaluation of the anti-proliferative and NF-κB activities of a library of simplified tylophorine analogs
作者:Micah J. Niphakis、Bryant C. Gay、Kwon Ho Hong、Nicholas P. Bleeker、Gunda I. Georg
DOI:10.1016/j.bmc.2012.07.044
日期:2012.10
lack of practical methods for the synthesis of such analogues has limited this effort. Here, we present a concise synthetic approach to N-substituted phenanthropiperidines, which enabled a systematic investigation of structure-activity relationships at an underexplored region of the tylophorine scaffold. This work suggests that ring E of tylophorine is essential for the anti-proliferative activity of the
Intramolecular thiophene-arene C−C heterocoupling is successfully achieved in a set of topologically and electronically engineered bis(biaryl)thiophenes (BATs) under Scholl oxidative conditions to provide symmetric and unsymmetric diphenanthrothiophenes (DPTs), simple thiananographenes. The thia-edge of diphenanthrothiophenes are conveniently transformed into blue-emissive and electrochemically stable
Butterfly‐shaped methylene‐bridged bitriphenylenes are synthesized by Scholl cyclization, and are shown to be promising solution‐processable candidates for stable, transparent OFET deviceapplication.
An efficient protocol to synthesize unsymmetrical triphenylenes from electron-rich biphenyls and diaryliodoniumsalts via Cu catalysis was developed. A variety of unsymmetrical triphenylenes with diversified functional groups were synthesized according to this method. This transformation went through multiple direct C–H arylations from easily produced starting materials with high step-economy. The
Efficient Synthesis of Octaalkyloxy-o-quaterphenyls via Base-Induced Biaryl Coupling
作者:Jörg L. Schulte、Sabine Laschat
DOI:10.1055/s-1999-3412
日期:1999.3
Octamethoxy-o-quaterphenyl (8a) was prepared in three steps from 4-bromo-1,2-dimethoxybenzene (5a) employing two base-mediated biaryl couplings. Demethylation of 8a followed by alkylation with decyl bromide gave the tetradecyloxy-o-quaterphenyl (8c).