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ÖмäÌå10 ÊÇ Ä¿±ê»¯ºÏÎï 11a-kµÄ ¹Ø¼üÖмäÌ壬ÆäÓÐ Á½ÖÖºÏ³É ·½·¨¡£·½·¨Ò»£¨Scheme 1£©£º¸ù¾ÝÎÄÏ×[10-11]£¬´Ó ÖмäÌå6 Ö±½ÓºÏ³É ÖмäÌå10£¬ÒÔ ÖмäÌå7¡¢ÖмäÌå3 ºÍ ¼×´¼ÄÆ Îª ³õʼÔÁÏ£¬ÒÔ ÒÒ¶þ´¼ÒÒÃÑ Îª´ß»¯¼Á£¬ÒÔ Õý¸ýÍé ΪÈܼÁ£¬¼ÓÈÈ»ØÁ÷ ·´Ó¦£¬ÇÒ ÐèÒª·ÖË®Æ÷¡£·½·¨¶þ£¨Scheme 2£©£º¼´ ±¾ÎÄµÄ ºÏ³É·½·¨¡£·½·¨Ò» ËäÈ»´Ó ÖмäÌå7 Ö±½Ó ºÏ³ÉÖмäÌå10£¬µ« ÊÕÂʵ͡¢´¿¶ÈµÍ¡¢ÔÁÏÄÑÈÜÓÚ Õý¸ýÍé¡¢ÐèÒª ¼ÓÈÈ»ØÁ÷ ÇÒ ÐèÒª ·ÖË®Æ÷ ²Ù×÷·±Ëö¡£·½·¨¶þËäÈ» ±È·½·¨Ò» ¶à³öÈý²½£¬µ«ÊÕÂʸߣ¬´¿¶È¸ß£¬×ÜÌåÊÕÂÊ ¸ßÓÚ ·½·¨Ò» ÇÒ ·´Ó¦Ìõ¼þκͣ¬²Ù×÷¼òµ¥·½±ã£¬ÊÇ½ÏºÃµÄ ºÏ³ÉÖмäÌå10µÄ ·½·¨£¬Òò´Ë ±¾ÎIJÉÓà ·½·¨¶þ ºÏ³ÉÖмäÌå10¡£ Regarding key intermediate 10 of target compound 11a-k, there are 2 synthetic schemes. Scheme 1: according to reference [10-11], intermediate 10 can be directly synthesized from intermediate 6, wherein intermediate 7, 3 and sodium methoxide act as initial raw materials, glycol ether acts as catalyst, n-heptane is selected as solvent, in addition, heating reflux and water knockout drum are needed. Scheme 2: also the proposed scheme in this paper. Although by scheme 1, intermediate 10 can be directly synthesized from inter mediate 7, the yield and purity are low, raw materials are hard to be dissolved by n-heptane, operations are complex as heating reflux and water knockout drum are needed. On the contrast, although scheme 2 has 3 more procedures than scheme 1, it is still a better scheme for its advantages including higher yield, purity, and overall yield, milder reaction condition, simpler operation. Therefore, this paper adopts scheme 2 to synthesize intermediate 10. ÉúÎï»îÐÔ ²â¶¨½á¹û ±íÃ÷, »¯ºÏÎï½á¹¹ ¶Ô ɱÑÁ³æ»îÐÔ ÓÐ ÏÔÖøÓ°Ïì, ÆäÖÐ R2»ùÍÅ ¶Ô »îÐÔµÄÓ°Ïì×î´ó, µ±R1 ¶¼ÊÇ -CH3ʱ£¬R2 ΪBʱ, »îÐÔ×î¸ß£¬LC50 Ϊ3.45mg/L£¨»¯ºÏÎï11c)£»R2ΪA¡¢D»òGʱʱ, »¯ºÏÎï»îÐÔ ÓÐËù½µµÍ£¬µ«ÒÀÈ» ±íÏÖ³ö ½ÏÓÅµÄ É±ÑÁ³æ»îÐÔ£»R2Ϊ C¡¢E»òFʱ£¬»¯ºÏÎï ɱÑÁ³æ»îÐÔ Ã÷ÏÔϽµ¡£×ÜÌåÀ´Ëµ, »îÐÔÊý¾Ý ´óС˳ÐòΪC£¾D£¾G£¾C£¾E£¾F¡£E/Z Òì¹¹Ìå ¶Ô »¯ºÏÎïµÄ»îÐÔ Ò²ÓÐÒ»¶¨Ó°Ï죬¶Ô±È11a£¨EÌ壩ºÍ11b£¨ZÌ壩£¬11h£¨ZÌ壩ºÍ11i£¨EÌ壩£¬ZÒì¹¹ÌåµÄ »îÐÔ ÂÔÓÅÓÚ EÒì¹¹ÌåµÄ »îÐÔ¡£ The measurement results of bioactivity show that compound structure is of significant influence to aphicide activity, wherein R2 group has the largest influence. When R1 is -CH3, R2 is B, the aphicide has the highest activity, LC50 is 3.45mg/L£¨compound 11c); When R2 is A, D or G, compound activity is decreased in certain degree, but still remain good aphicide activity; When R2 is A,D or F, aphicide activity is significantly reduced. Generally speaking, the activity data are in follow order: C£¾D£¾G£¾C£¾E£¾F. In addition, E/Z isomer is of certain influence to compound activity. By comparing 11a£¨E structure£© and 11b£¨Z structure£©, 11h£¨Z structure£© and 11i£¨E structure£©, it can be known that Z isomer has slightly higher activity than that of E isomer. |
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