160732-08-1Relevant academic research and scientific papers
A short synthesis of (+)-(S)-kurasoin B
Fernandes, Rodney A.
, p. 15 - 18 (2008)
A short efficient enantioselective synthesis leading directly to (+)-(S)-kurasoin B has been achieved in 5 steps and 25% overall yield from (2E)-ethyl-4-phenylbut-2-enoate using Sharpless asymmetric dihydroxylation and CH3NO2-assiste
Enantioselective One-Pot Synthesis of α,β-Epoxy Ketones via Aerobic Oxidation of Cyclopropanols
Elek, Gábor Zoltán,Borovkov, Victor,Lopp, Margus,Kananovich, Dzmitry G.
, p. 3544 - 3547 (2017/07/17)
An efficient, mild, and environmentally benign method was developed for the asymmetric synthesis of 2-oxyranyl ketones from easily available tertiary cyclopropanols. The one-pot protocol includes the aerobic oxidation of cyclopropanol derivatives catalyzed by Mn(III) complexes followed by the poly-l-leucine-assisted stereoselective elimination of water from the intermediate peroxides with DBU to afford the corresponding epoxy ketones in high yields and good-to-excellent enantioselectivities (up to 97%).
Asymmetric (4+3) cycloadditions of enantiomerically enriched epoxy enolsilanes
Lo, Brian,Lam, Sarah,Wong, Wing-Tak,Chiu, Pauline
supporting information, p. 12120 - 12123 (2013/01/16)
A f(oxy) allyl: The intermolecular (4+3) cycloaddition of enantiomerically enriched epoxy enolsilanes produces cycloadducts with up to 99 % ee, thus implying the reaction does not proceed by the putative achiral oxyallyl cation intermediate, but through a transiently chiral electrophile which retains the stereochemical information of the epoxide (see scheme; TES=triethylsilyl, Tf=trifluoromethanesulfonyl). Copyright
Total syntheses of kurasoins A and B, novel protein farnesyltransferase inhibitors, and absolute structures of kurasoins A and B
Hirose, Tomoyasu,Sunazuka, Toshiaki,Zhi-Ming, Tian,Handa, Masaki,Uchida, Ryuji,Shiomi, Kazuro,Harigaya, Yoshihiro,Omura, Satoshi
, p. 777 - 784 (2007/10/03)
Asymmetric total syntheses of kurasoins A (1) and B (2), recently discovered protein farnesyltransferase (PFTase) inhibitors, have been achieved in seven steps from 2-(4-hydroxyphenyl)ethanol via the stereospecific alkylation of the chiral epoxide ((-)-7) and in four steps from phenylacetaldehyde via the coupling reaction of the chiral epoxide ((-)- 13) with indole, respectively. The synthesis defined the (3S) absolute configuration of 1 and 2. The stereochemistry of the hydroxy group is important for eliciting PFTase inhibition.
An efficient route to α,β-epoxy ketones of high enantiomerical purity
Pegorier,Petit,Mambu,Larcheveque
, p. 1403 - 1405 (2007/10/02)
Acylepoxides were obtained in high enantiomeric purity (ee = 92-99%) by addition of organolithium or Grignard reagents to enantiomerically pure methyl or ethyl 2,3-epoxypropanoates at low temperature (-85°C).
