In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Exploiting differences in caspase-2 and -3 S2 subsites for selectivity: Structure-based design, solid-phase synthesis and in vitro activity of novel substrate-based caspase-2 inhibitors, published in 2011, which mentions a compound: 91523-50-1, mainly applied to proline peptide preparation caspase inhibitor Huntington disease, Related Products of 91523-50-1.
Several caspases have been implicated in the pathogenesis of Huntington’s disease (HD); however, existing caspase inhibitors lack the selectivity required to investigate the specific involvement of individual caspases in the neuronal cell death associated with HD. In order to explore the potential role played by caspase-2, the potent but non-selective canonical Ac-VDVAD-CHO caspase-2 inhibitor 1 was rationally modified at the P2 residue in an attempt to decrease its activity against caspase-3. With the aid of structural information on the caspase-2, and -3 active sites and mol. modeling, a 3-(S)-substituted-L-proline along with four addnl. scaffold variants were selected as P2 elements for their predicted ability to clash sterically with a residue of the caspase-3 S2 pocket. These elements were then incorporated by solid-phase synthesis into pentapeptide aldehydes 33a-v. Proline-based compound 33h bearing a bulky 3-(S)-substituent displayed advantageous characteristics in biochem. and cellular assays with 20- to 60-fold increased selectivity for caspase-2 and ∼200-fold decreased caspase-3 potency compared to the reference inhibitor 1. Further optimization of this prototype compound may lead to the discovery of valuable pharmacol. tools for the study of caspase-2 mediated cell death, particularly as it relates to HD.
There is still a lot of research devoted to this compound(SMILES：OC(=O)C1NCCC2=C1C=CC(O)=C2)Related Products of 91523-50-1, and with the development of science, more effects of this compound(91523-50-1) can be discovered.
Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem