In an article, author is Kozhikhova, Ksenia V., once mentioned the application of 25197-96-0, COA of Formula: https://www.ambeed.com/products/25197-96-0.html, Name is (S)-2-Amino-3-(5-methoxy-1H-indol-3-yl)propanoic acid, molecular formula is C12H14N2O3, molecular weight is 234.25, MDL number is MFCD01074513, category is amides-buliding-blocks. Now introduce a scientific discovery about this category.
Substance P 1-7 (SP1-7, Arg(1)-Pro(2)-Lys(3)-Pro(4)-Gln(5)-Gln(6)-Phe(7)) is the major bioactive metabolite formed after proteolytic degradation of the tachykinin substance P (SP). This heptapeptide often opposes the effects of the mother peptide. Hence, SP1-7 is having anti-inflammatory, anti-nociceptive and anti-hyperalgesic effects in experimental models. Despite all encouraging properties of SP1-7 its exact mode of action has not yet been elucidated which has hampered further development of this heptapeptide in drug discovery. Contrary to SP that mediates its biological activity via the NK-1 receptor, the N-terminal fragment SP1-7 acts through an unknown target that is distinct from all known opioid and tachykinin receptors. The SP1-7 amide 1 (Arg(1)-Pro(2)-Lys(3)-Pro(4)-Gln(5)-Gln(6)-Phe(7)-NH2) was previously shown to be superior to the endogenous SP1-7 in all experimental pain models where the two compounds were compared. Herein, we report that N-methylation scan of the backbone of the SP1-7 amide (1) results in peptides that are significantly less prone to undergo proteolysis in plasma from both mouse and human. However, with the two exceptions of the [MeLys(3)] SP1-7 amide (3) and the [MeGln(5)] SP1-7 amide (4), the peptides with a methyl group attached to the backbone are devoid of significant anti-allodynic effects after peripheral administration in the spared nerve injury (SNI) mouse model of neuropathic pain. It is suggested that the N-methylation does not allow these peptides to form the accurate bioactive conformations or interactions required for efficient binding to the macromolecular target. The importance of intact N-terminal Arg(1) and C-terminal Phe(7), anticipated to serve as address and message residues, respectively, for achieving the anti-allodynic effect is emphasized. Notably, the three heptapeptides: the SP1-7 amide (1), the [MeLys(3)] SP1-7 amide (3) amide and the [MeGln(5)] SP1-7 amide (4) are all considerably more effective in the SNI mouse model than gabapentin that is widely used in the clinic for treatment of neuropathic pain.
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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics