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piaoxue1988

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A part of Fr BEW (46 g) was fractionated by SiO2 column
chromatography (C.C.) eluted with C6H6-EtOAc (100:0¨C0:100, column 1).   
  ÆäÖÐFr BEW Ö¸µÄÊÇÒ»¸ö×é·Ö¡£  ²»¶®µÄÊÇC6H6-EtOAc (100:0¨C0:100£©ÌݶÈÏ´Íѵ½µ×ÓжàÉÙ¸öÌݶȰ¡£¬»¹ÊÇÓÐÆäËû±ðµÄÒâ˼ô£¿ÎÒÊÇÐÂÊÖ£¬Ï£ÍûÓÐÈ˰ïÎÒ£¡¸Ðл£¡
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