2003
DOI: 10.1016/s0040-4039(03)01094-3
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Enantioselective synthesis of heliannuol E; structural consideration of natural molecule

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Cited by 43 publications
(19 citation statements)
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“…The oxidation was conducted under constant current electrolysis using a glassy carbon beaker anode to give the desired spirocyclohexadienone 127 in 68 % yield. Compound 127 was then converted to heliannuol E after Lewis acid‐promoted ring‐expansion, hydrogenolysis, protecting group adjustments and introduction of the benzylic vinyl group . As shown in Scheme , related electrochemically‐mediated spiro cyclization approaches were also implemented in the synthesis of the tetrahydropyrroloquinoline‐containing natural products discorhabdin C, aeroplysinin and gymnastatin A …”
Section: Anodic Oxidationmentioning
confidence: 99%
“…The oxidation was conducted under constant current electrolysis using a glassy carbon beaker anode to give the desired spirocyclohexadienone 127 in 68 % yield. Compound 127 was then converted to heliannuol E after Lewis acid‐promoted ring‐expansion, hydrogenolysis, protecting group adjustments and introduction of the benzylic vinyl group . As shown in Scheme , related electrochemically‐mediated spiro cyclization approaches were also implemented in the synthesis of the tetrahydropyrroloquinoline‐containing natural products discorhabdin C, aeroplysinin and gymnastatin A …”
Section: Anodic Oxidationmentioning
confidence: 99%
“…[155] Under constant-current conditions,oxidation at acarbon beaker anode was carried out to form aspirodienone derivative (Scheme 54). Nishiyama et al also applied the electrochemical synthesis of spiro acetals to the synthesis of ossamycin, following as imilar approach.…”
Section: Synthesis By Electrochemically Initiated Cyclizationmentioning
confidence: 99%
“…Anodic synthesis of aspiro compound for the synthesis of heliannuolE. [155] Scheme 55. Electrochemical synthesis of chromans and spiro chromans by intermolecular cycloadditions of terpenes and in situ generated ortho-quinone methides.…”
Section: Synthesis By Electrochemically Initiated Cyclizationmentioning
confidence: 99%
“…5 The irregular terpenoid structure of 1 and the associated significant biological activity are expected to prompt further reports on its synthesis. 6 We have initiated a comprehensive programme into the synthesis of these structurally intriguing new terpenoid compounds and have recently reported a synthesis of heliannuol A and D. 7 We now report a synthesis of the methyl ether of an epimer of heliannuol E.…”
Section: Introductionmentioning
confidence: 99%