In the mol-ecular structure of the title compound, C(14)H(21)NO(5), the six-membered ring of the indolizine moiety adopts a chair conformation. There are two independent mol-ecules in the asymmetric unit. The oxopyrrolidine ring attached to the indolizine ring system is nearly planar, with mean deviations of 0.018 (3) and 0.010 (3) Å for the two mol-ecules. The absolute configuration of the title compound was assigned from the synthesis.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3295453 | PMC |
http://dx.doi.org/10.1107/S1600536812005144 | DOI Listing |
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