Studies on Chemical Ingredients of Fruit of Alpinia Galanga, (L.) Swarts(Ⅱ) -Four Esters and Their Hydrolysis

Abstract

Abstract: Four esters have been isolated from a Chinese medicinal herb, fruit of Alpinia galanga(L.) Swarts, and identified as 1'-acetoxychavicol acetate(1), trans-p-acetoxycinnamyl acetate(2), 1'-acetoxyeugenol acetate(3), and trans-3'-acetoxytsoeugenol acetate(4). Among them compound 2 has not been reported in literature and compound 4 has nor been found in natural product before. Compound 1 and 3 were hydrclysed rapidly in boiling wacerinto 1'-hydroxychavicol acetate(5), tians-p-acetoxycinudmic alcnhol (6), 1'-hydroxyeugenol acetate (7) and trans-3' - hydroxyisoeueugenol acetate(8) respectively. The mechanism of these hydrolyses is discussed. The mass spectrometric fragmentations of these compounds are proposed.

Key words: Alpinia galanga swarts, Hydrolysis, Ester

Xue Dunyuan, Sheng Fenling, Song Maosen, Chen Ning, Li Zhaolin, Chen Yaozu(Y. Z. Chen). Studies on Chemical Ingredients of Fruit of Alpinia Galanga, (L.) Swarts(Ⅱ) -Four Esters and Their Hydrolysis[J]. Chemical Research in Chinese Universities, 1988, 4(2): 54-60.

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Studies on Chemical Ingredients of Fruit of Alpinia Galanga, (L.) Swarts(Ⅱ) -Four Esters and Their Hydrolysis

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