1980
DOI: 10.1039/c39800000162
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Endiandric acid, a novel carboxylic acid from Endiandra introrsa(Lauraceae): X-ray structure determination

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Cited by 60 publications
(39 citation statements)
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“…[48] Since endiandric acid A (90) and B (91) occur together with endiandric acid C (92), and as these compounds are isolated in racemic form, Bandaranayake et al postulated there was a unified biogenesis involving a series of electrocyclizations from an achiral precursor (Scheme 19). [49] They proposed that a polyketide of type 93 might lead to a phenylpolyene acid with a central conjugated tetraene unit.…”
Section: Other Polyketides 241 Endiandric Acidsmentioning
confidence: 98%
“…[48] Since endiandric acid A (90) and B (91) occur together with endiandric acid C (92), and as these compounds are isolated in racemic form, Bandaranayake et al postulated there was a unified biogenesis involving a series of electrocyclizations from an achiral precursor (Scheme 19). [49] They proposed that a polyketide of type 93 might lead to a phenylpolyene acid with a central conjugated tetraene unit.…”
Section: Other Polyketides 241 Endiandric Acidsmentioning
confidence: 98%
“…[93] Ein Bei- Aufsätze gruppen um Sasaki [99] und Yamamoto [100] [105] entwickelten Totalsynthesen von SNF4435 C (118) und SNF4435 D (119, Schema 23), zwei immunsuppressiven Wirkstoffen aus der Kulturbrühe von Streptomyces spectabilis. [106] Die zentrale Bicyclo[4.2.0]octadien-Struktur dieser faszinierenden Naturstoffe erinnert stark an die Endiandrinsäu-ren, [107] für die Black und Mitarbeiter einen Biosynthesepfad mit einer Elektrocyclisierungskaskade vorschlugen, [108] der anschließend -vor nun über 20 Jahren -experimentell durch unsere Arbeitsgruppe bestätigt wurde. [109] Daher wurde analog postuliert, dass die SNF-Verbindungen durch Sequenzen aus konrotatorischen 8p-und disrotatorischen 6p-Elektrocyclisierungen des vollständig funktionalisierten Z,Z,Z,ETetraens 115 entstehen (Schema 23).…”
Section: Stille-reaktionenunclassified
“…[6] Similar cascades have been proposed in the biosynthesis of the endiandric acids, [7] as well as the immunosuppressants SNF4435 C/D, [8] and verified by total synthesis.…”
mentioning
confidence: 99%