methyl (R,E)-11-(2-ethyl-3-oxocyclopent-1-en-1-yl)-9-hydroxyundec-10-enoate;ent-phytoprostane B1 type II methyl ester;phytoprostane B1 type II methyl ester;methyl (E,9R)-11-(2-ethyl-3-oxocyclopenten-1-yl)-9-hydroxyundec-10-enoate
A Flexible Synthesis of the Phytoprostanes B1 Type I and II
摘要:
Syntheses of the enantiomerically pure phytoprostanes B-1 type I and II are described starting from furfural and n-propylfuran. Key steps include the preparation of the Freimanis (+/-)-hydroxycyclopentenone and Wittig coupling using chiral phosphonium salts.
A concise approach to both enantiomers of phytoprostane B1 type II
作者:Wiesława Perlikowska、Marian Mikołajczyk
DOI:10.1016/j.tetasy.2011.10.005
日期:2011.10
The synthesis of enantiomeric phytoprostane B1 type II methyl esters has been accomplished in approximately 30% overall yield via two basic transformations starting from 3-[(dimethoxyphosphoryl)methyl]cyclopentenone as a key reagent. They include ethylation of the ring C(2) carbon and a Horner olefination reaction using the phosphonate moiety at C(3). The novel components of the Horner reaction, the
A Flexible Synthesis of the Phytoprostanes B<sub>1</sub> Type I and II
作者:Siham El Fangour、Alexandre Guy、Jean-Pierre Vidal、Jean-Claude Rossi、Thierry Durand
DOI:10.1021/jo048179+
日期:2005.2.1
Syntheses of the enantiomerically pure phytoprostanes B-1 type I and II are described starting from furfural and n-propylfuran. Key steps include the preparation of the Freimanis (+/-)-hydroxycyclopentenone and Wittig coupling using chiral phosphonium salts.
General Strategy for the Synthesis of B<sub>1</sub> and L<sub>1</sub> Prostanoids: Synthesis of Phytoprostanes (<i>RS</i>)-9-L<sub>1</sub>-PhytoP, (<i>R</i>)-9-L<sub>1</sub>-PhytoP, (<i>RS</i>)-16-B<sub>1</sub>-PhytoP, and (<i>RS</i>)-16-L<sub>1</sub>-PhytoP
作者:Ruggero Beretta、Mirko Giambelli Gallotti、Umberto Pennè、Alessio Porta、Juan Fernando Gil Romero、Giuseppe Zanoni、Giovanni Vidari
DOI:10.1021/jo502538b
日期:2015.2.6
acceptor properties at carbonsα and β, respectively. Key steps include the chemoselective lithiation of a 1-iodo-2-bromoolefin, the introduction of the side chains by transition-metal catalysis following Heck- or Suzuki-type protocols, the construction of an enone moiety by a mild Au(I)-catalyzed Meyer Schuster rearrangement, and a lipase-mediated hydrolysis of methylesters to deliver the phytoprostanes