Abstract
The potent anti-ulcer principles, 1'-acetoxychavicol acetate (1) and 1'-acetoxyeugenol acetate (2), were isolated from seeds of Alpinia galanga WILD., and established by chemical syntheses. Besides, three sesquiterpenes, caryophyllene oxide (10), caryophyllenol-I (11) and caryophyllenol-II (13), along with n-pentadecane, n-7-heptadecene and fatty acid methyl esters, were also isolated.
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