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. 2011 Jan 8;67(Pt 2):o291.
doi: 10.1107/S1600536810054498.

rac-Diethyl 9-hy-droxy-9-methyl-7-phenyl-1,4-diaza-spiro-[4.5]decane-6,8-dicarboxyl-ate

Abel M Maharramov  1 , Arif I Ismiyev, Bahruz A Rashidov, Gunel M Rahimova, Mirza A Allahverdiyev
Affiliations

rac-Diethyl 9-hy-droxy-9-methyl-7-phenyl-1,4-diaza-spiro-[4.5]decane-6,8-dicarboxyl-ate

Abel M Maharramov et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The title mol-ecule, C(21)H(30)N(2)O(5), is chiral with four stereogenic centres. The crystal is a racemate and consists of enanti-omeric pairs with the relative configuration rac-(6S*,7R*,8R*,9S*). The ethyl fragment of the eth-oxy-carbonyl group at position 6 is disordered in a 0.46 (3):0.54 (3) ratio. The crystal structure features inter-molecular N-H⋯O. Intra-molecular O-H⋯N and N-H⋯O hydrogen bonds also occur.

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Figures

Fig. 1.
Fig. 1.
The molecular structure of the title compound, with the atomic numbering scheme. Displacement ellipsoids were drawn at the 30% probability level.
Fig. 2.
Fig. 2.
The hydrogen-bonded (dashed lines) packing in the title compound. H atoms not involved in hydrogen bonding have been omitted for clarity.
See this image and copyright information in PMC

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