Labdane-type diterpene dialdehyde, pungent principle of myoga, Zingiber mioga Roscoe.
The pungent principle of myoga (Zingiber mioga Roscoe) was identified as (E)-8beta(17)-epoxylabd-12-ene-15,16-dial (miogadial) on the basis of its physical and spectroscopic properties (MS, NMR, IR, and UV). Galanal A and B, isolated as well as miogadial, had no hot taste. Reduced miogadial also was tasteless. The pungency of miogadial depended on the presence of alphabeta-unsaturated-1,4-dialdehyde group.
Abe
Masako
M
Department of Health and Nutrition, Takasaki University of Health and Welfare, Takasaki 370-0033, Japan.
Ozawa
Yoshio
Y
Uda
Yasushi
Y
Yamada
Yoichi
Y
Morimitsu
Yasujiro
Y
Nakamura
Yoshimasa
Y
Osawa
Toshihiko
T
D004224:Diterpenes / Q000737:chemistry*; D006801:Humans; D015394:Molecular Structure; D013649:Taste; D030521:Zingiberaceae / Q000737:chemistry*
D004224:Diterpenes; C476263:miogadial; C476264:galanal A; C476265:galanal B