title: New ursane triterpene from the fruits of Terminalia arjuna.
abstract: A new ursane triterpene, torment (2 alpha,3 beta,19 alpha-trihydroxyurs-12-en) (1), was isolated from the fruits of Terminalia arjuna along with four known ursane and oleane triterpenes. The structures were established on the basis of extensive NMR (1D & 2D) and MS (EI & ESI) studies. Tormentic acid (2), 19 alpha-hydroxy asiatic acid (3) and olean-12-en-2 alpha,3 beta-diol (4) were isolated for the first time from this species. Compounds 1 and 2 lacked significant enzyme inhibition, cytotoxicity, immunomodulatory and antiglycation activities.
authors.forename: Rashadul
authors.initials: R
authors.lastname: Hossain
authors.forename: Rajia
authors.initials: R
authors.lastname: Sultana
authors.forename: Aychout
authors.initials: A
authors.lastname: Adhikari
authors.forename: Muhammad Iqbal
authors.initials: MI
authors.lastname: Choudhary
authors.forename: Yusuff
authors.initials: Y
authors.lastname: Ali
authors.forename: Shahed
authors.initials: S
authors.lastname: Zaman
mesh_terms: D005638:Fruit / Q000737:chemistry; D015394:Molecular Structure; D029766:Terminalia / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C588202:(2Alpha,3beta)-2,3-dihydroxyolean-12-en-28-oic acid; D014315:Triterpenes; C007695:euscaphic acid