2004
DOI: 10.1021/cr030692k
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Asymmetric Synthesis of Isoquinoline Alkaloids

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Cited by 682 publications
(249 citation statements)
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“…[25] Chemical asymmetric synthesis of benzylisoquinoline and berbine alkaloids by various different strategies has been reported, in general requiring many steps and therefore resulting in limited overall yields. [26] Amongst the published procedures only few catalytic processes are found that involve metal-catalyzed asymmetric hydrogenation, [27] intramolecular allylic amination, [28] and metal-or organocatalyzed asymmetric alkylation reactions. [29] Despite the impressive progress in these areas, optically pure compounds (ee > 99 %) were rarely obtained.…”
mentioning
confidence: 99%
“…[25] Chemical asymmetric synthesis of benzylisoquinoline and berbine alkaloids by various different strategies has been reported, in general requiring many steps and therefore resulting in limited overall yields. [26] Amongst the published procedures only few catalytic processes are found that involve metal-catalyzed asymmetric hydrogenation, [27] intramolecular allylic amination, [28] and metal-or organocatalyzed asymmetric alkylation reactions. [29] Despite the impressive progress in these areas, optically pure compounds (ee > 99 %) were rarely obtained.…”
mentioning
confidence: 99%
“…[25] Die chemische asymmetrische Synthese dieser wichtigen Alkaloide wurde anhand verschiedenster Strategien durchgeführt, doch im Allgemeinen sind mehrstufige, die Ausbeuten stark einschränkende Reaktionssequenzen nötig. [26] Auch finden sich unter den publizierten Synthesen nur wenige katalytische Varianten, etwa die metallkatalytische asymmetrische Hydrierung, [27] die intramolekulare allylische Aminierung [28] sowie metall-oder organokatalytische asymmetrische Alkylierungsreaktionen. [29] Trotz der enormen Fortschritte in diesen Bereichen konnten nur selten enantiomerenreine Substanzen (ee > 99 %) erhalten werden.…”
Section: Angewandte Chemieunclassified
“…7 Asymmetric Pictet-Spengler reactions have attracted much attention, [8][9][10][11][12][13][14][15] because it is an important and useful tool to construct chiral synthons containing tetrahydro-isoquinoline or tetrahydro-β-carboline (THβC) structural moieties. Therefore, the main challenge of this cyclization is stereoselectivity and the ratio of isomers.…”
Section: Introductionmentioning
confidence: 99%