| 摘要 |
The present invention relates to compounds represented by the following formula <IMAGE> wherein R1, R2, R3, R4, and R5 independently represent a hydrogen atom or an acetyl or benzyl group, R6 represents a hydrogen atom a hydroxyl, acetoxy, or benzyloxy group, R7 represents a hydrogen atom or R6 and R7 together my represent another direct bond, and R8 represents a carboxyl, methoxycarbonyl, hydroxymethyl, or acetoxymethyl group or salts thereof and a process for the preparation thereof, as well as their utilities in a method for culture, a method for the growth inhibition of moyashi roots, and a method for the growth promotion of moyashi hypocotyls.
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