Asymmetric aldol condensation as a route to polypropionate derived pheromones
摘要:
The synthesis of the polypropionate-derived pheromones sitophilate (1) and sitophilure (2) are described using an asymmetric aldol condensation as the key step to adduct 6; compound 6 was smoothly converted to the antipodes of each pheromone. This procedure can be expanded to more complicated structures with the same type of syn configuration such as stegobinone (3) and serricornin (4). Copyright (C) 1996 Elsevier Science Ltd
Process for total synthesis of pladienolide B and pladienolide D
申请人:Kanada Mikie Regina
公开号:US20080021226A1
公开(公告)日:2008-01-24
[Problems to be Solved]
To provide an effective process for total synthesis of pladienolide B and pladienolide D having excellent anti-tumor activity and to provide useful intermediates in the above-described process.
[Measure for Solving the Problem]
A process for producing a compound represented by Formula (11):
wherein P
1
, P
7
, P
8
, P
9
and R
1
are the same as defined below, characterized by including reacting a compound represented by Formula (12):
wherein P
7
means a hydrogen atom or a protecting group for hydroxy group; R
1
means a hydrogen atom or a hydroxy group, with a compound represented by Formula (13):
wherein P
1
means a hydrogen atom or a protecting group for hydroxy group; P
8
means a hydrogen atom, an acetyl group or a protecting group for hydroxy group; P
9
means a hydrogen atom or a protecting group for hydroxy group; or P
8
and P
9
may form together a group represented by a formula:
wherein R
5
means a phenyl group which may have a substituent, in the presence of a catalyst.
Structure of FD-895 Revealed through Total Synthesis
作者:Reymundo Villa、Alexander L. Mandel、Brian D. Jones、James J. La Clair、Michael D. Burkart
DOI:10.1021/ol3023006
日期:2012.11.2
The totalsynthesis of FD-895 was completed through a strategy that featured the use of a tandem esterification ring-closing metathesis (RCM) process to construct the 12-membered macrolide and a modified Stille coupling to append the side chain. These studies combined with detailed analysis of all four possible C16–C17 stereoisomers were used to confirm the structure of FD-895 and identify an analog
[EN] SCALEABLE PREPARATION OF POLYKETIDES<br/>[FR] PRÉPARATION DE POLYCÉTIDES POUVANT ÊTRE MISE À L'ÉCHELLE
申请人:UNIV CALIFORNIA
公开号:WO2021026273A1
公开(公告)日:2021-02-11
Disclosed herein, inter alia, are methods of making polyketide compounds.
在此披露的内容包括制备聚酮化合物的方法。
A synthetic entry to pladienolide B and FD-895
作者:Alexander L. Mandel、Brian D. Jones、James J. La Clair、Michael D. Burkart
DOI:10.1016/j.bmcl.2007.06.094
日期:2007.9
Presented within are syntheses of the pladienolide B and FD-895 side-chains, as well as models of the essential ring-closing metathesis and Stille coupling that will be used to complete their totalsyntheses. Several analogs of the pladienolide B side-chain were also prepared in order to evaluate the scope of the methodology and to create a library of structures that could be used for stereochemical
Diastereoselective homogeneous hydrogenations without direction by substituents
作者:Edward Farrington、Mauro Comes Franchini、John M. Brown、Edward Farrington、Mauro Comes Franchini、John M. Brown
DOI:10.1039/a707025j
日期:——
The Rh complex catalysed hydrogenation of an α-(hydroxyalkyl)-
N-methoxyacrylamide and the Ru complex catalysed hydrogenation of an α-(fluoroalkyl)acrylate both proceed with ≥90% selectivity to give the
syn-isomer.