- Acylated glycosides of hydroxy fatty acid methyl esters generated from the crude resin glycoside (pharbitin) of seeds of Pharbitis nil by treatment with indium(III) chloride in methanol.
Acylated glycosides of hydroxy fatty acid methyl esters generated from the crude resin glycoside (pharbitin) of seeds of Pharbitis nil by treatment with indium(III) chloride in methanol.
Journal of natural products (2010-10-14)
Masateru Ono, Ayako Takigawa, Tomoko Mineno, Hitoshi Yoshimitsu, Toshihiro Nohara, Tsuyoshi Ikeda, Emiko Fukuda-Teramachi, Naoki Noda, Kazumoto Miyahara
PMID20939542
ABSTRACT
Treatment of the crude ether-insoluble resin glycoside (convolvulin) from seeds of Pharbitis nil (Pharbitis Semen), called pharbitin, with indium(III) chloride in methanol provided seven oligoglycosides of hydroxy fatty acid methyl esters partially acylated by 2-methyl-3-hydroxybutyric (nilic) and 2S-methylbutyric acids. Their structures were elucidated on the basis of NMR and MS data and chemical conversions.