New C(28) steroidal glycosides from Tubocapsicum anomalum.
Two new C(28) steroidal glycosides, tuboanosides A (1) and B (2), were isolated from the fruit of Tubocapsicum anomalum MAKINO. Their chemical structures were elucidated on the basis of spectroscopic and X-ray diffraction analysis of the p-bromobenzoyl derivative (4) of tuboanosigenin (3), the sapogenol derivative of these two glycosides. Tuboanosides have the structural peculiarity of an unusual side chain carrying an unusual linkage with a C-21 bound to C-25 on the lactone ring.
Kiyota
Naoko
N
Faculty of Medical and Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
Shingu
Kazushi
K
Yamaguchi
Koki
K
Yoshitake
Yasuyuki
Y
Harano
Kazunobu
K
Yoshimitsu
Hitoshi
H
Miyashita
Hiroyuki
H
Ikeda
Tsuyoshi
T
Tagawa
Chie
C
Nohara
Toshihiro
T
D005638:Fruit / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D019657:Solanaceae / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*; D014961:X-Ray Diffraction
D006027:Glycosides; D013256:Steroids