A metal-free decarboxylative cyclization from natural α-amino acids to construct pyridine derivatives
作者:Qiang Wang、Changfeng Wan、Yang Gu、Jintang Zhang、Lingfeng Gao、Zhiyong Wang
DOI:10.1039/c0gc00753f
日期:——
A metal-free decarboxylative cyclization from natural α-amino acids was developed and applied in the preparation of pyridinederivatives. By virtue of this method, a series of pyridines containing the moiety of natural α-amino acids can be synthesized efficiently from the corresponding natural α-amino acids.
An oxidative trimerization of three amino acids has been realized to furnish 2,3,5-trisubstuitued pyridines in both cross- and homo-trimerization types. This method is capable of converting simple linear biomass material to heterocycles, which features in the assembly of three amino acid branched chains into one aromatic ring. Molecular iodine triggers the sequential decarboxylation and deamination
New calcineurin inhibiting 3-dimethylaminopropyl substituted diarylheterocycles by sonogashira reactions and catalytic hydrogenation
作者:Lunxiang Yin、Jürgen Liebscher、Frank Erdmann
DOI:10.1002/jhet.5570420717
日期:2005.11
A series of calcineurininhibiting compounds 1 consisting of a central aromatic N-heterocycle, two aryl substituents and a 3-dimethylaminopropyl chain was synthesized by introduction of the side chain. A corresponding haloheterocycle 3 was transformed into a 3-dimethylaminopropynylheterocycle 2 by Sonogashira coupling and was in turn hydrogenated in the presence of Pd/C to afford the 3-dimethylami