Novel Saponins from Zizyphus spina-christi growing in Egypt.
From the butanol extract of the leaves of Zizyphus spina-christi (L.) Willd. (Rhamnaceae), four saponin glycosides were isolated: Christinin A (1), B (2), C (3), and D (4). Their structures were determined by chemical and spectroscopic evidence. Compound 1, was found to be 3-O-[alpha-L-fucopyranosyl (1 -> 2)-beta-D-glucopyranosyl(1 ->3)-alpha-L-arabinopyranosyl]jujubogenin; the others are the new, 2 being 3-O-[alpha-D-fucopyranosyl(1 -> 2)-¿beta-D- glucopyranosyl-4-sulphate(1 ->3)¿-alpha-L-arabinopyranosyl]jujubogenin, 3 being 3-O-beta-glucopyranosyl(1 -> 2)-alpha-L-rhamnopyranosyl (1 -> 3)-alpha- L-arabinopyranosyl]jujubogenin, and 4 being 3-O-[alpha-L-fucopyranosyl(1 -> 2) -¿beta-D-arabinopyranosyl(1 -> 3)-beta-D-glucopyranosyl(1 -> 3)¿-alpha-L- arabinopyranosy]jujubogenin.
el-Din Hussein Mahran
G
G
Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Egypt.
Glombitza
K W
KW
Mirhom
Y W
YW
Hartmann
R
R
Michel
C G
CG
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D004534:Egypt; D008969:Molecular Sequence Data; D015394:Molecular Structure; D010936:Plant Extracts / Q000302:isolation & purification*; D018515:Plant Leaves; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment
D010936:Plant Extracts; D012503:Saponins