An enantioselective total synthesis of ( -)-mucocin has been completed. A combination of asymmetric glycolate aldol additions and ring closing metathesis reactions were exploited to construct the C18-C34 and C7-C17 fragments. A selective cross-metathesis reaction was employed as the key step to couple two complex fragments.
Synthesis of both the enantiomers of erythro-6-acetoxy-5-hexadecanolide
作者:Kenji Mori、Tatsuya Otsuka
DOI:10.1016/s0040-4020(01)91574-1
日期:——
Both (5S, 6R)-(+)- and (5R, 6S)-(−)-6-acetoxy-5-hexadecanolide, the ovipositionattractantpheromone of the mosquitoCulexpipiensfatigans, were synthesized employing the Sharpless asymmetric epoxidation as the starting step.
Synthesis of chiral epoxy alcohols: synthesis of (+)-disparlure
作者:Suk-Ku Kang、Yun-Sik Kim、Jong-Suk Lim、Kun-Soo Kim、Sung-Gyu Kim
DOI:10.1016/s0040-4039(00)92629-7
日期:1991.1
(2R,3S)-1,2-Epoxy alcohols 1, (2S,3S)-2,3-epoxy alcohols 2, and (2S,3S)-1,2-epoxy alcohols 3 were prepared from readily available (−)-2-deoxy-D-ribose. Using epoxyalcohol 3b as a chiral synthon, (+)-disparlure, the pheromone of the gypsy moth, Porthetria dispar(L.), was synthesized.
A novel enantioselective synthetic approach of (-)-(5R,6S)-6-acetoxyhexadecan-5-olide, an ovipositionattractantpheromone of the mosquito Culex pipiens fatigans is presented, starting from n-dodecanal. The synthesis features tandem α-aminooxylation-Henry and Yamaguchi-Hirao alkylation reactions as key steps.
Synthesis of (-)-Muricatacin and (-)-(5R,6S)-6-acetoxy-5-hexadecanolide, the Mosquito oviposition attractant pheromone, from D-isoascorbic acid
作者:Christine Gravier-Pelletier、Michèle Sanière、Isabelle Charvet、Yves Le Merrer、Jean-Claude Depezay
DOI:10.1016/0040-4039(94)88177-4
日期:1994.1
From D-isoascorbic acid, a general approach to enantiomerically pure hydroxy γ-butyro and δ-valero lactones, (-)-Muricatacin and (-)-(5R,6S)-6-acetoxy-5-hexadecanolide, via a four carbon atoms bis-epoxide equivalent, is reported.
Enantiopure hydroxylactones from L-ascorbic and D-isoascorbic acids. Part II. Synthesis of (−)-(5R, 6S)-6-acetoxy-5-hexadecanolide and its diastereomers
作者:Christine Gravier-Pelletier、Yves Le Merrer、Jean-Claude Depezay
DOI:10.1016/0040-4020(94)01033-v
日期:1995.2
Strategies to enantiopure 6-hydroxy-δ-valerolactones, through bis-epoxide formal equivalents issued from L-ascorbic and D-isoascorbic acids, are studied. The approaches notably involve Mitsunobu reaction on diols or triols and opening of the resulting epoxides.