Resin glycosides. XXV. Multifidins I and II, new jalapins, from the seed of Quamoclit x multifida

Chemical & Pharmaceutical Bulletin
Masateru OnoK Miyahara

Abstract

Alkaline hydrolysis of the ether-soluble resin glycoside fraction of seeds of Quamoclit (Q.) x multifida, a hybrid between Q. pinnata and Q. coccinea, gave new glycosidic acids, multifidinic acids A and B, along with two known glycosidic acids, quamoclinic acid A and operculinic acid A, and three organic acids, (2S)-2-methylbutyric acid, n-decanoic acid and n-dodecanoic acid. Further, as major ether-soluble resin glycosides, new jalapins named multifidins I and II, were isolated accompanied by quamoclins I-IV, which were previously obtained from seeds of Q. pinnata. The structures of multifidins I and II, and multifidinic acids A and B have been determined on the basis of chemical and spectral data.

Citations

Jan 21, 2009·Journal of Natural Medicines·Masateru OnoKazumoto Miyahara
Sep 14, 2010·Journal of Natural Medicines·Masateru OnoKazumoto Miyahara
Mar 3, 2009·Chemical & Pharmaceutical Bulletin·Masateru OnoKazumoto Miyahara
May 13, 2010·Chemical & Pharmaceutical Bulletin·Masateru OnoKazumoto Miyahara
Aug 12, 2018·Journal of Natural Medicines·Masateru OnoToshihiro Nohara

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