title: Cucurbitane-type triterpene glycosides from the fruits of Momordica charantia.
abstract: Four new cucurbitane-type triterpene glycosides, charantosides D-G (1-4) were isolated from a methanol extract of Momordica charantia fruits. The structures of these compounds were determined by chemical and spectroscopic methods to be (19R)-5 beta,19-epoxy-25-methoxycucurbita-6,23-diene-3 beta,19-diol 3-O-beta-D-glucopyranoside, (19R)-5 beta, 19-epoxy-25-methoxycucurbita-6,23-diene-3 beta,19-diol 3-O-beta-D-allopyranoside, 7 beta-methoxycucurbita-5,23E,25-triene-3 beta-ol 3-O-beta-D-allopyranoside, and 3 beta,7 beta-dihydroxycucurbita-5,23E,25-triene- 19-al 3-O-beta-D-allopyranoside.
authors.forename: Pham Hai
authors.initials: PH
authors.lastname: Yen
authors.forename: Duong Thi
authors.initials: DT
authors.lastname: Dung
authors.forename: Nguyen Xuan
authors.initials: NX
authors.lastname: Nhiem
authors.forename: Hoang Le Tuan
authors.initials: Hle T
authors.lastname: Anh
authors.forename: Dan Thi Thuy
authors.initials: DT
authors.lastname: Hang
authors.forename: Duong Thi Hai
authors.initials: DT
authors.lastname: Yen
authors.forename: Nguyen Thi
authors.initials: NT
authors.lastname: Cuc
authors.forename: Ninh Khac
authors.initials: NK
authors.lastname: Ban
authors.forename: Chau
authors.initials: C
authors.lastname: Van Minh
authors.forename: Phan
authors.initials: P
authors.lastname: Van Kiem
mesh_terms: D005638:Fruit / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D029777:Momordica charantia / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D006027:Glycosides; D014315:Triterpenes; C514277:cucurbitane