Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Notes
Acylated Glycosidic Acid Methyl Esters Generated from the Convolvulin Fraction of Rhizoma Jalapae Braziliensis by Treatment with Indium(III) Chloride in Methanol
Masateru Ono , Satoko Oda, Shin Yasuda, Tomoko Mineno, Masafumi Okawa, Junei Kinjo, Hiroyuki Miyashita, Hitoshi Yoshimitsu, Toshihiro Nohara, Kazumoto Miyahara
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Keywords: resin glycoside, convolvulin, Ipomoea operculata, Rhizoma Jalapae Braziliensis, acylated glycosidic acid methyl ester, indium(III) chloride
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2017 Volume 65 Issue 1 Pages 107-111

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Abstract

Four hexaglycosides of methyl 3S,12S-dihydroxyhexadecanoate (1–4) were provided after treatment of the crude convolvulin fraction from Rhizoma Jalapae Braziliensis (the root of Ipomoea operculata (GOMES) MART., Convolvulaceae) with indium(III) chloride in methanol. The structures of 1–4 were elucidated on the basis of spectroscopic and chemical methods. Their sugar moieties were partially acylated with organic acids including (3S,9R)-3,6:6,9-diepoxydecanoic (exogonic) acid, (E)-2-methylbut-2-enoic (tiglic) acid, and isovaleric acid.

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© 2017 The Pharmaceutical Society of Japan
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