Aporphine glycosides from Stephania cepharantha seeds.
Two new aporphine glycosides, stesakine-9-O-beta-D-glucopyranoside (1) and N-methylasimilobine-2-O-beta-D-glucopyranoside (2), were isolated from the seeds of Stephania cepharantha cultivated in Japan, together with 16 known alkaloids. The structures of 1 and 2 were spectroscopically determined by comparison of their (1)H and (13)C NMR data with those of stesakine (11) and N-methylasimilobine (12), respectively.
Kashiwaba
N
N
Research Laboratories, Kaken Shoyaku Co., Ltd., Tokyo 181-0013, Japan. kasiwaba@ac.shoyaku.ac.jp
Ono
M
M
Toda
J
J
Suzuki
H
H
Sano
T
T
D002855:Chromatography, Thin Layer; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification; D007211:Indoles / Q000737:chemistry* / Q000302:isolation & purification; D007564:Japan; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D016339:Spectrometry, Mass, Fast Atom Bombardment
D005960:Glucosides; D007211:Indoles; C409606:N-methylasimilobine-2-O-glucopyranoside; C409607:stesakine-9-O-glucopyranoside