Massularosides E-N, triterpenoid saponins from the stem bark of Massularia acuminata, featuring rare N-acetylglucosamine and sulphoquinovose units. - Zulfiqar F; Ali Z; Chae HS; Ospanov M; Avula B; Zhao J; Ahmed N; Khan SI; Bello OM; Chittiboyina AG; Khan IA (Phytochemistry, 2026)