Fluvirosaones A and B, Two Indolizidine Alkaloids with a Pentacyclic Skeleton from Flueggea virosa.
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DOI: 10.1021/acs.orglett.7b03935
Abstract: Fluvirosaones A (1) and B (2), together with virosecurinine (3), were isolated from Flueggea virosa. Their structures were determined by physical, spectroscopic, and X-ray analysis and confirmed through comparison of the calculated and experimental 13C… read more here.
Keywords: flueggea virosa; two indolizidine; fluvirosaones two; alkaloids pentacyclic ... See more keywords
Total Synthesis of Indolizidine Alkaloids via Nickel-Catalyzed (4 + 2) Cyclization.
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DOI: 10.1021/acs.orglett.9b04479
Abstract: A Ni-catalyzed (4 + 2) cycloaddition of alkynes and azetidinones toward piperidinones was used as key reaction in the enantioselective synthesis of naturally occurring indolizidine alkaloids. The reaction benefits from the use of an easily… read more here.
Keywords: synthesis indolizidine; total synthesis; alkaloids via; indolizidine alkaloids ... See more keywords
P4O10/TfOH mediated domino condensation–cyclization of amines with diacids: a route to indolizidine alkaloids under catalyst- and solvent-free conditions
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DOI: 10.1039/d2ra02534e
Abstract: A domino condensation–cyclization method is developed to synthesize indolizidine alkaloids using a P4O10/TfOH reagent system without the employment of either a catalyst or solvent. The use of a few aliphatic and aromatic dicarboxylic acids is… read more here.
Keywords: condensation cyclization; domino condensation; indolizidine alkaloids; p4o10 tfoh ... See more keywords