Components of convolvulin from Quamoclit × multifida.
Alkaline hydrolysis of the ether-insoluble resin glycoside (convolvulin) fraction of the seeds of Quamoclit × multifida (syn. Q. sloteri House, Convolvulaceae), a hybrid between Q. pennat and Q. coccinea, gave three new glycosidic acids (maltifidinic acids C, D, and E) along with three known glycosidic acids (quamoclinic acids B, C, and D) and four organic acids (2S-methylbutyric, tiglic, 2R,3R-nilic, and 7S-hydroxydecanoic acids). The structures of the new glycosidic acids were characterized on the basis of spectroscopic data as well as chemical evidence.
Ono
Masateru
M
School of Agriculture, Tokai University, 5435 Minamiaso, Aso, Kumamoto 869-1404, Japan. mono@agri.u-tokai.ac.jp
Kishida
Makiko
M
Ikegami
Yoshihiro
Y
Takaki
Yoshinari
Y
Okawa
Masafumi
M
Kinjo
Junei
J
Yoshimitsu
Hitoshi
H
Nohara
Toshihiro
T
Miyahara
Kazumoto
K
D027722:Convolvulaceae / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D012639:Seeds / Q000737:chemistry
D006027:Glycosides