Design, catalyst-free synthesis, DFT study and anticancer assessment of new 2,9-disubstituted purine-6-carboxamides. - Chatterjee J; Bhujbal SM; Joshi G; Mishra UK; Sharon A; Muskan; Singh S; Wahajuddin M; Bharatam PV; Dalal R; Kumar R (Bioorganic chemistry, 2026)