Staphylionosides A-K: megastigmane glucosides from the leaves of Staphylea bumalda DC.
Chemical investigation of leaves of Staphylea bumalda DC., collected in the suburbs of Hiroshima City, afforded 11 new megastigmane glucosides, named staphylionosides A-K (3-13), along with two known megastigmane glucosides (1, 2). The relative structures were elucidated from spectroscopic evidence, and the absolute structures of the aglycones were determined by means of the combination of beta-D-glucosylation-induced shift-trends and the modified Mosher's method.
Yu
Qian
Q
Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University, Japan.
Matsunami
Katsuyoshi
K
Otsuka
Hideaki
H
Takeda
Yoshio
Y
D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry*; D015394:Molecular Structure; D045792:Norisoprenoids / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
D005960:Glucosides; D045792:Norisoprenoids