Traveler’s diarrhea (TD), manifested by loose stools, is a critical health issue affecting the digestive system. It poses a significant health risk with documented mortality and morbidity. Escherichia coli and Klebsiella are primary causative organisms. The emergence of New Delhi metallo-β-lactamases (NDM-1), initially reported in E. coli and Klebsiella pneumoniae, has driven the rapid dissemination of antibiotic-resistant strains. The bla NDM-1 gene encodes NDM-1, an enzyme that confers resistance to β-lactam antibiotics. Traditionally, Cucumis anguria L., which is native to Africa and is widely distributed in East and Southern Africa, has been used to alleviate various stomach disorders. The NDM-1 metallo-β-lactamase protein is involved in the production of β-lactams. In this study, we have conducted in silico screening of natural bioactive compounds, including ethylenediaminetetraacetic acid (EDTA), to identify potential inhibitors of metallo-β-lactamase protein. Molecular docking is performed to evaluate the binding interactions between the compounds and NDM-1. Subsequently, the ADME/Tox properties of the lead compounds and EDTA are predicted. The phytocompounds homogentisic acid, caffeic acid, and protocatechuic acid have Glide g-scores of −8.818, −8.663, and −8.121 kcal/mol, respectively. They form hydrogen bonds with GLN 123 and ASN 220, along with metal coordination involving Zn²⁺ ions. Molecular dynamics (MD) simulations, including RMSD, RMSF, R _g, and hydrogen bond analyses, are conducted on the top-ranked protein–ligand complexes and EDTA. The results indicate that the protein–ligand complexes remained stable throughout the 100 ns simulation period. This assessment provides the first evidence supporting the specificity and compatibility of potential phytochemicals in C. anguria against TD by inhibiting β-lactam proteins.

Angiogenesis, regulated by vascular endothelial growth factor (VEGF), is crucial in tumor growth, metastasis, and inflammation. Leonurus japonicus Houtt., a traditional Chinese herb, was investigated for its anti‐angiogenic potential. DNA sequencing confirmed its identity, distinguishing it from the common morphological misidentification with Leonurus sibiricus by the public. Using UHPLC‐MS/MS and GNPS (Global Natural Products Social) molecular networking on the active methanol partition, over 6000 nodes were grouped into 273 clusters. Diterpenoids and flavonoids were targeted. Six compounds were successfully isolated from L. japonicus , including four labdane‐type diterpenoids ( 1 – 4 ) and two flavonoids ( 5 , 6 ) using column chromatography. Compound 1 , (–)‐8 S ‐acetoxy‐15,16‐epoxy‐8,9‐seco‐13(16),14‐labdadiene, was a new stereoisomer, while Compound 6 , nevadensin, was reported for the first time from this species. Compounds were characterized by NMR, ESI‐MS, and ECD. At 50 μM, Compounds 1 , 4 , and 5 exhibited inhibitory effects in endothelial progenitor cell (EPC) tube formation. Molecular docking and dynamics simulations supported this anti‐angiogenic activity. Compound 1 showed the highest VEGFR‐2 binding affinity (−9.24 kcal/mol), comparable to sunitinib (−9.52 kcal/mol), further verified by an immunoblotting assay. This study demonstrated the successful integration of GNPS and bioactivity‐guided isolation for identifying natural VEGFR‐2 inhibitors. Our findings highlight Compounds 1 and 4 as promising lead candidates for anti‐angiogenic therapy.