Synthesis of N5-furoxan-functionalized pyrazolo[3,4-d]pyrimidinones as novel nonclassical DHFR/TS inhibitors with potential apoptotic and anti-migratory activity. PubMed 1970-01-01 added 2026-07-23 Alotaibi FS, Abou-Salim MA Open original source ↗ chemistry