646520-63-0Relevant academic research and scientific papers
Total synthesis of four stereoisomers of (5Z,8Z,10E,14Z)-12-hydroxy-17,18-epoxy-5,8,10,14-eicosatetraenoic acid and their anti-inflammatory activities
Goto, Tomomi,Urabe, Daisuke,Isobe, Yosuke,Arita, Makoto,Inoue, Masayuki
, p. 8320 - 8332 (2015/10/05)
The four stereoisomers of novel lipid mediator 1, (5Z,8Z,10E,14Z)-12-hydroxy-17,18-epoxy-5,8,10,14-eicosatetraenoic acid, were synthesized from six simple fragments. Triyne 2 was convergently assembled through three SN2 alkynylation reactions a
A reductive coupling strategy towards ripostatin A
Schleicher, Kristin D.,Jamison, Timothy F.
, p. 1533 - 1550 (2013/10/22)
Synthetic studies on the antibiotic natural product ripostatin A have been carried out with the aim to construct the C9-C10 bond by a nickel(0)-catalyzed coupling reaction of an enyne and an epoxide, followed by rearrangement of the resulting dienylcyclopropane intermediate to afford the skipped 1,4,7-triene. A cyclopropyl enyne fragment corresponding to C1-C9 has been synthesized in high yield and demonstrated to be a competent substrate for the nickel(0)-catalyzed coupling with a model epoxide. Several synthetic approaches toward the C10-C26 epoxide have been pursued. The C13 stereocenter can be set by allylation and reductive decyanation of a cyanohydrin acetonide. A mild, fluoride-promoted decarboxylation enables construction of the C15-C16 bond by an aldol reaction. The product of this transformation is of the correct oxidation state and potentially three steps removed from the targeted epoxide fragment.
The use of COP-OAc in the catalyst-controlled syntheses of 1,3-polyols
Kirsch, Stefan F.,Klahn, Philipp,Menz, Helge
supporting information; experimental part, p. 3592 - 3603 (2011/12/21)
An iterative strategy to the 1,3-polyol motif is described. The use of the catalytic asymmetric Overman esterification for the construction of all stereogenic centers is broadly examined as are the sequences to extend the developing polyol chain. The iterative strategies are applied to the total syntheses of rugulactone and polyrhacitides A and B. 1 Introduction 2 Results and Discussion 2.1 Chain Elongation via RCM (Cycle A) 2.2 Total Synthesis of Rugulactone 2.3 Chain Elongation via Ando Olefination (Cycle B) and Total Syntheses of Polyrhacitides A and B 2.4 Useful Variants 3 Conclusions. Georg Thieme Verlag Stuttgart. New York.
