Revealing the anti-ferroptosis guanidine alkaloids from Buthus martensii Karsch via a NMR-guided isolation combined with in vitro, in silico, and network pharmacology.
By combining NMR fingerprint with rapid activity screening of eight crude fractions, eleven guanidine alkaloids were obtained from Buthus martensii Karsch, including one new natural product 7 and one new compound 10. Fraction 6 (IC50 = 141.40 ± 0.21 μg/mL) and Fraction 7 (IC50 = 50.89 ± 1.43 μg/mL) showed radical scave...