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The known synthetic toluhydroquinone derivatives, 5 bromotoluhydroquinone and 4-O-methyltoluhydroquinone were obtained for the frst time from a natural source from Dothideomycete sp. (red alga Chondria crassicualis, YokijiIs., S.Korea). Both compounds were moderate 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavengers. Of the erythrolic acids A?CE 18?C22, meroterpenoids with a modified terpene sidechain isolated from Erythrobacter sp. (sediment, Trinity Bay, Galveston, Texas), only erythrolic acid D exhibited modest activity towards non-small cell lung cancer cells. ??????a???Dothideomycete??N, ??????????????????????????????????@??4-O-methyltoluhydroquinone??4-O-methyltoluhydroquinone. (?n??, yokijiis, ?t?Íù???wcrassicualis)????????????DPPH????????§Ø????????????Erythrobacter ??N?????????????–^????????x??erythrolic acids A?CE, 18?C22??(????_?, ????S??D, ?????, ???e??), ???erythrolic acid D ????§³?????????????@????§Ø????? |
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YauYau: ½ð±Ò+10, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú, Thanks ! 2014-06-05 17:26:21
YauYau: ½ð±Ò+10, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú, Thanks ! 2014-06-05 17:26:21
| ÎÒÃÇÊ״δÓÒ°ÉúDothideomycete sp (red alga Chondria crassicualis, YokijiIs., S.Korea)µÃµ½Á½ÖÖ¹ãΪÈËÖªµÄºÏ³É¼×»ùÇâõ«ÑÜÉúÎï------5äå¼×»ùÇâõ«ºÍ4-O-¼×»ù¼×»ùÇâõ«£¬Á½ÖÖ»¯ºÏÎï¶Ô1,1-diphenyl-2-picrylhydrazyl (DPPH) ×ÔÓÉ»ù¾ù±íÏÖ³öÖжȵÄÇå³ý×÷Óá£ËùÓдÓErythrobacterÔå(sediment, Trinity Bay, Galveston, Texas)·ÖÀëµÃµ½µÄ¸ÄÐÔÝÆÏ©²àÁ´meroterpenoids erythrolic acids A¨CE 18¨C22£¬½öerythrolic acid D ¶Ô·ÇСϸ°û·Î°©Ï¸°ûÓÐÇá¶È»îÐÔ¡£ |

2Â¥2014-06-01 21:15:06














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