2002
DOI: 10.1039/b207509a
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A flexible synthesis of cyclopentitol derivatives based on ring-closing metathesis of carbohydrate-derived 1,6-dienes

Abstract: For Abstract see ChemInform Abstract in Full Text.

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Cited by 27 publications
(22 citation statements)
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“…Anomeric deprotection, followed by a Wittig reaction, provided the precursor 13 for the ring‐closing metathesis reaction. The free hydroxyl group in 14 was then the starting point for an Overman rearrangement, providing the amine protected as the trichloroacetamide‐protected amine 15 . Cleavage of this protecting group with NaOH was followed by Fmoc protection of the free amine using a standard procedure.…”
Section: Figurementioning
confidence: 99%
“…Anomeric deprotection, followed by a Wittig reaction, provided the precursor 13 for the ring‐closing metathesis reaction. The free hydroxyl group in 14 was then the starting point for an Overman rearrangement, providing the amine protected as the trichloroacetamide‐protected amine 15 . Cleavage of this protecting group with NaOH was followed by Fmoc protection of the free amine using a standard procedure.…”
Section: Figurementioning
confidence: 99%
“…Zunächst wurde eine Galaktosylierung des Cyclopenten‐Derivats 5 durchgeführt. Dieser sterisch anspruchsvolle Schritt wurde erfolgreich durch Aktivierung des Trichloracetimidats mit 2‐Chlor‐6‐methylpyridiniumtriflat in Dichlormethan bei Raumtemperatur erreicht . Dabei bildete sich aufgrund des Nachbargruppeneffekts selektiv das β‐konfigurierte Galaktosid.…”
Section: Figureunclassified
“…Furthermore, the reaction liberates the aldehyde at the anomeric center and makes it ready for the next olefin‐forming reaction without any further protecting group manipulations. van Boom and co‐workers used this fragmentation reaction with galactose substrate 1 (Scheme ) 18. The intermediate aldehyde 2′ was isolated by extraction, but otherwise it was not further purified.…”
Section: Diene Synthesis From Carbohydrates and Ring‐closing Metatmentioning
confidence: 99%