2002
DOI: 10.1021/ol016938u
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Synthesis of the C1−C21 (C1‘-C21‘) Fragment of the Dimeric Polyketide Natural Product SCH 351448

Abstract: [structure: see text] A convergent, stereoselective assembly of the C1-C21 (C1'-C21') fragment of SCH 351448, a 28-membered bis-lactone natural product, has been developed. A highly efficient approach to this fragment assembles 75% of the carbon skeleton and all the stereochemical elements present in the natural product. In addition, an interesting boron ligand effect on the diastereoselectivity of a key aldol reaction with methyl ketone-derived enolborinates is reported.

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Cited by 54 publications
(18 citation statements)
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References 25 publications
(23 reference statements)
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“…Its intriguing structure and activity have prompted several laboratories to target SCH-351448 as their synthetic goal. To date,s even total syntheses [64][65][66][67][68][69][70][71][72] and two formal syntheses [73,74] have been reported, together with one approach towards the monomeric unit. [75] Thes ynthetic efforts published before 2006 have been summarized in ar eview by Hiersemann.…”
Section: Sch-351448mentioning
confidence: 99%
“…Its intriguing structure and activity have prompted several laboratories to target SCH-351448 as their synthetic goal. To date,s even total syntheses [64][65][66][67][68][69][70][71][72] and two formal syntheses [73,74] have been reported, together with one approach towards the monomeric unit. [75] Thes ynthetic efforts published before 2006 have been summarized in ar eview by Hiersemann.…”
Section: Sch-351448mentioning
confidence: 99%
“…In der Kristallstruktur des Natriumsalzes bildet die Verbindung einen pseudo-C 2 -symmetrischen käfigartigen Komplex mit einem einzelnem Natriumion. Bis heute sind sieben Totalsynthesen [64][65][66][67][68][69][70][71][72] und zwei formale Synthesen [73,74] beschrieben worden, außerdem ein Ansatz zur Synthese der monomeren Einheit. Bis heute sind sieben Totalsynthesen [64][65][66][67][68][69][70][71][72] und zwei formale Synthesen [73,74] beschrieben worden, außerdem ein Ansatz zur Synthese der monomeren Einheit.…”
Section: Sch-351448unclassified
“…[63] SCH-351448 erweist sich deshalb als vielversprechende Leitstruktur für neuartige Cholesterinhemmer.A ufgrund der faszinierenden Struktur hat eine Reihe von Arbeitsgruppen die Synthese von SCH-351448 in Angriff genommen. Bis heute sind sieben Totalsynthesen [64][65][66][67][68][69][70][71][72] und zwei formale Synthesen [73,74] beschrieben worden, außerdem ein Ansatz zur Synthese der monomeren Einheit. [75] Die vor 2006 publizierten Synthesebemühungen wurden in einem Überichtsartikel von Hiersemann zusammengefasst.…”
Section: Sch-351448unclassified
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“…100) [311]; (8) formation of six-membered ring lactones for fostriecin total synthesis [312,313]; (9) diastereoselective formation of bicyclic six-membered ring containing oxygen heterocycles (e.g. 101) [314,315]; (10) formation of six-membered ring ␣,␤-unsaturated lactones [316][317][318][319][320]; (11) formation of six-membered ring ␣,␤-unsaturated lactones for total synthesis of methynolide [321], goniodiol (see 102) [322], and osmundalatone [323]; (12) formation of ␤,␥-unsaturated six-membered ring lactones [324]; (13) formation of six-membered ring cyclic ethers for total synthesis of ambruticin [325]; (14) tandem alkene-isomerization and RCM to form various cyclic enol ethers (e.g. 103) from the corresponding acyclic allylic ethers (e.g.…”
Section: Ring Closing Metathesismentioning
confidence: 99%