In the title compound, C(23)H(23)NO(5), the C(5)N ring adopts an envelope conformation with a C atom as the flap, whilst the saturated C(6) ring fused to it adopts a chair conformation. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R(2) (2)(8) loops.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2980281 | PMC |
http://dx.doi.org/10.1107/S1600536809054786 | DOI Listing |
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