We describe efficient and flexible enantioselective syntheses of the active enantiomers of the pheromones of pine sawflies, including the species Diprion jingyuanensis, their homologs and, stereoisomers, as well as those identified from the Chinese species Diprion jingyuanensis, i.e., 126. A total of 48 compounds, including acetates 78–101 and propanoates 102–125, have been synthesized. Our general
Chiral synthesis of (2s,3s,7s)-3,7-dimethylpentadecan-2-yl acetate and propionate, potential sex pheromone components of the pine saw-fly neodiprion sertifer (geoff.)
A synthesis of (2S,3S,7S)-3,7-dimethylpentadecan-2-yl acetate () and propionate () is described. (2S)-2-Methyldecan-1-yl lithium () was reacted with (3S,4S)-3,4-dimethyl-γ-butyrolactone () to yield the ketoalcohol which upon Huang-Minlon reduction furnished (2S,3S,7S)-3,7-dimethylpentadecan-2-ol (). Acylations gave the esters and . The (2S)-2-methyldecan-1-yl lithium was obtained via asymmetric synthesis
Stereocontrolled synthesis of all of the four possible stereoisomers of erythro-3,7-dimethyl-pentadec-2-yl acetate and propionate, the sex pheromone of the pine sawflies
作者:K. Mori、S. Tamada
DOI:10.1016/0040-4020(79)80054-x
日期:1979.1
All of the four possible stereoisomers of 2,3-erythro-3,7-dimethylpentadecan-2-ol 1 were synthesized by a stereospecific SN2 oxirane cleavage of (2S,3S)-2,3-epoxybutane or its antipode with lithium di[(R)- or (S)-4-methyldodecyl]cuprate. Their acetates or propionates were prepared to test their pheromone activity.
通过(2 S,3 S)-2,3-环氧丁烷或其对映体的立体特异性S N 2环氧乙烷裂解,合成了2,3-赤--3,7-二甲基十五烷基-2-醇1的所有四种可能的立体异构体。用二[(R)-或(S)-4-甲基十二烷基]铜酸锂。准备它们的乙酸盐或丙酸酯以测试其信息素活性。
Odinokov, V. N.; Akhmetova, V. R.; Khasanov, Kh. D., Journal of Organic Chemistry USSR (English Translation), 1992, vol. 28, # 6.1, p. 908 - 914
作者:Odinokov, V. N.、Akhmetova, V. R.、Khasanov, Kh. D.、Abduvakhabov, A. A.、Khalilov, L. M.、et al.
DOI:——
日期:——
Stereocontrolled synthesis of all of the four possible stereoisomers of -3,7-dimethyl- pentadec-2-yl acetate and propionate, the sex pheromone of the pine sawflies