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ABSTRACT:
SUBMITTER: Zhang RR
PROVIDER: S-EPMC3247448 | biostudies-literature | 2011 Nov
REPOSITORIES: biostudies-literature
Acta crystallographica. Section E, Structure reports online 20111029 Pt 11
In the crystal structure of the title compound {systematic name: (1'S,2R,2'R,3'S,6'R)-3'-ethyl-4-methyl-5H-5'-oxa-10'-aza-spiro-[furan-2,4'-tricyclo-[8.3.0.0(2,6)]trideca-ne]-5,11'-dione hemihydrate}, C(17)H(23)NO(4)·0.5H(2)O, the asymmetric unit contains two mol-ecules of tuberostemoamide with similar conformations and one water mol-ecule. The tuberostemoamide mol-ecule is composed of one seven-membered ring (A) and three five-membered rings (B, C and D). Ring A exists in a chair conformation, ...[more]