An Efficient Enantioselective Synthesis of (?)-Serricorole
作者:Wolfgang Oppolzer、In�s Rodriguez
DOI:10.1002/hlca.19930760314
日期:1993.5.12
The cigarette beetle pheromone (–)-serricorole (1) has been synthesized in 23% overall yield by an eight-step sequence starting from N-propionylsultam 3. The synthesis features asymmetric anti- and syn-aldolizations 3 4 and 8 9, a non-destructive N-acylsultam cleavage with lithiated ethylphenylsulfone (10 12), and the smooth, Ti-mediated cyclization of β-acyloxy-ketone 2 to dihydropyranone 14.
Ebata, Takashi; Mori, Kenji, Agricultural and Biological Chemistry, 1987, vol. 51, # 11, p. 2925 - 2928
作者:Ebata, Takashi、Mori, Kenji
DOI:——
日期:——
EBATA, TAKASHI;MORI, KENJI, AGR. AND BIOL. CHEM., 51,(1987) N 11, 2925-2928
作者:EBATA, TAKASHI、MORI, KENJI
DOI:——
日期:——
A Flexible Stereocontrolled Synthesis of β-Hydroxy-α-methyl Esters: Application to the Synthesis of Stegobiol and Serricorole
作者:Pilar Gil、Jesús Razkin、Alberto González
DOI:10.1055/s-1998-2052
日期:1998.4
β-Hydroxy-α-methyl esters have been obtained in a stereocontrolled manner and high enantiomeric and diastereomeric purity from commercially available methyl 3-oxopentanoate and methyl 3-oxobutanoate. The key step is the catalytic hydrogenation of the carbonyl group using (R)- or (S)-BINAP-Ru as chiral catalyst followed by asymmetric alkylation. Stegobiol and serricorole, components of the sex pheromone of the drugstore beetle, Stegobium paniceum (L.) and cigarette beetle, Lasioderma serricorne (F.), have been prepared from these chiral building blocks without the need for stoichiometric amounts of chiral auxiliaries.