Influence of N-arylsulfonamido d-valine N-substituents on the selectivity and potency of matrix metalloproteinase inhibitors

Bioorg Med Chem. 2023 Jul 15:90:117350. doi: 10.1016/j.bmc.2023.117350. Epub 2023 May 31.

Abstract

To develop matrix metalloproteinase inhibitors (MMPIs) for both therapy and medicinal imaging by fluorescence-based techniques or positron-emission tomography (PET), a small library of eighteen N-substituted N-arylsulfonamido d-valines were synthesized and their potency to inhibit two gelatinases (MMP-2, and MMP-9), two collagenases (MMP-8, and MMP-13) and macrophage elastase (MMP-12) was determined in a Structure-Activity-Relation study with ({4-[3-(5-methylthiophen-2-yl)-1,2,4-oxadiazol-5-yl]phenyl}sulfonyl)-d-valine (1) as a lead. All compounds were shown to be more potent MMP-2/-9 inhibitors (nanomolar range) compared to other tested MMPs. This is a remarkable result considering that a carboxylic acid group is the zinc binding moiety. The compound with a terminal fluoropropyltriazole group at the furan ring (P1' substituent) was only four times less potent in inhibiting MMP-2 activity than the lead compound 1, making this compound a promising probe for PET application (after using a prosthetic group approach to introduce fluorine-18). Compounds with a TEG spacer and a terminal azide or even a fluorescein moiety at the sulfonylamide N atom (P2' substituent) were almost as active as the lead structure 1, making the latter derivative a suitable fluorescence imaging tool.

Keywords: Fluorescence imaging; Matrix metalloproteinase inhibitors; N-arylsulfonamido d-valines; Organic synthesis; Structure-Activity-Relations.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carboxylic Acids
  • Matrix Metalloproteinase 2*
  • Matrix Metalloproteinase Inhibitors* / pharmacology
  • Structure-Activity Relationship
  • Valine

Substances

  • Matrix Metalloproteinase Inhibitors
  • Matrix Metalloproteinase 2
  • Valine
  • Carboxylic Acids