- Enantioselective Henry reaction catalyzed by C2-symmetric chiral diamine-copper(II) complex
-
A copper(II) complex of C2-symmetric diamine has been proved to be an efficient catalyst for the enantioselective Henry reaction between nitroalkanes and various aldehydes to provide β-hydroxy nitroalkanes in high yields (up to 97%), moderate diastereoselectivities (up to 71:29) and excellent enantiomeric excesses (up to 96%). The chiral nitroaldol adduct obtained has been further converted into chiral aziridine in few steps.
- Selvakumar, Sermadurai,Sivasankaran, Dhanasekaran,Singh, Vinod K.
-
supporting information; experimental part
p. 3156 - 3162
(2011/02/25)
-
- Design, synthesis, and biological evaluation of a new class of small molecule peptide mimetics targeting the melanocortin receptors
-
A new bicyclic template has been developed for the synthesis of peptide mimetics. Straightforward synthetic steps, starting from amino acids, allow the facile construction of a wide range of analogs. This system was designed to target the melanocortin receptors (MCRs), with functional group selection based on a known pharmacophore and guidance from molecular modeling to rationally identify positional and stereochemical isomers likely to be active. The functions of hMCRs are critical to myriad biological activities, including pigmentation, steroidogenesis, energy homeostasis, erectile activity, and inflammation. These G-protein-coupled receptors (GPCRs) are targets for drug discovery in a number of areas, including cancer, pain, and obesity therapeutics. All compounds from this series tested to date are antagonists which bind with high affinity. Importantly, many are highly selective for a particular MCR subtype, including some of the first completely hMC5R-selective antagonists reported.
- Cain, James P.,Mayorov, Alexander V.,Cai, Minying,Wang, Hui,Tan, Bahar,Chandler, Kevin,Lee, YeonSun,Petrov, Ravil R.,Trivedi, Dev,Hruby, Victor J.
-
p. 5462 - 5467
(2007/10/03)
-