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Insect sex pheromone organisms to the the individual secreted into the outside world , same other individuals , can cause a specific behavior or developmental reaction of trace chemicals . Phytophthora ( Phytophthora ) is a class of non - fungal plant pathogens belonging to the eggs algae can be a large area in the worldwide destruction of some important crops . Their sexual pheromones Phythophera 1 ( 3,7,11,15 ) - tetramethyl-4 - carbonyl - ( 1,11,16 ) - triol containing four chiral methyl , the absolute configuration is not determined , so in this article , its absolute configuration to be synthesized . Chiral source ( R ) -3 - methyl-γ- butyrolactone and 3 - hydroxy - 5 - methyl- caprolactone as industrial waste , the raw material is already in our group . Selected (3R, 7S, 11R, 15R) - Phythophera 1 compositing target , and (R) -3 - methyl-γ- butyrolactone as a starting material , the synthetic fragment 04 and fragment 10 , the segments 04 and 10 through the nucleophilic addition generating fragment 11, the sex pheromone of Phythophera 1 fragment of C1 ~ C8 ; synthetic fragments of the starting material 35 , commercialized reagent 3 - methyl - 3 - hydroxy - 5 - methyl - caprolactone - 3 - en-1 - butanol as the synthesis of fragment 38, fragment 35 and 38 link synthesis Phytophthora sex pheromone C9 ~ C16 fragment 40 . Fragments 11,40 Phytophthora sex pheromone is (3R, 7S, 11R, 15R) - tetramethyl-4 - carbonyl - ( 1,11,16 ) - triol fragment .
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