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- W2078909927 abstract "L-Glutamic diethyl ester hydrochloride was converted to its pyrrole derivative 22 by condensation with 2,5-dimethoxytetrahydrofuran in water. Cyclization of 22 with BBr3 afforded (5S)-5,6-dihydro-5-ethoxycarbonyl-8(7H)-indolizinone (23). Catalytic hydrogenation of 23 over Pd/C in acetic acid gave exclusively (5S,9R)-5-ethoxycarbonylindolizidine in an overall yield of 41%, whereas hydrogenation over Rh/Al2O3 in ethanol gave predominantly (5S,8S,9S)-5-ethoxycarbonyl-8-hydroxyindolizidine in 48.5% overall yield." @default.
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- W2078909927 date "1994-06-01" @default.
- W2078909927 modified "2023-10-14" @default.
- W2078909927 title "An enantiospecific entry to indolizidines by intramolecular acylation of N-pyrrole esters" @default.
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- W2078909927 doi "https://doi.org/10.1016/s0040-4039(00)76698-6" @default.
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