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Crystal structure of (-)-(5R,7R,8S,9R,10S)-8-methyl-7-[(5R)-3-methyl-2-oxooxolan-3-en-5-yl]-1-aza-6-oxatri-cyclo-[8.3.0.05,9]tridecan-13-one monohydrate.

ABSTRACT: The title compound, C17H23NO4·H2O, is an epimer of the natural tetra-cyclic alkaloid isosaxorumamide which consists of a fused 5-7-5 tricyclic core and a di-hydro-furan-one substituent. The terminal di-hydro-furan ring is essentially planar with a maximum deviation of 0.0273 (14) Å from the mean plane and oxolane, azepane and pyrrolidine rings in the tricyclic ring system adopt twist, twist-chair and envelope forms, respectively. In the crystal, the amide and water mol-ecules are linked by O-H⋯O hydrogen bonds, forming a tape structure running along the b-axis direction. The tapes are further connected by C-H⋯O inter-actions into a three-dimensional architecture.

SUBMITTER: Oishi T 

PROVIDER: S-EPMC5946988 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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Crystal structure of (-)-(5<i>R</i>,7<i>R</i>,8<i>S</i>,9<i>R</i>,10<i>S</i>)-8-methyl-7-[(5<i>R</i>)-3-methyl-2-oxooxolan-3-en-5-yl]-1-aza-6-oxatri-cyclo-[8.3.0.0<sup>5,9</sup>]tridecan-13-one monohydrate.

Oishi Takeshi T   Yoritate Makoto M   Sato Takaaki T   Chida Noritaka N  

Acta crystallographica. Section E, Crystallographic communications 20180327 Pt 4

The title compound, C<sub>17</sub>H<sub>23</sub>NO<sub>4</sub>·H<sub>2</sub>O, is an epimer of the natural tetra-cyclic alkaloid isosaxorumamide which consists of a fused 5-7-5 tricyclic core and a di-hydro-furan-one substituent. The terminal di-hydro-furan ring is essentially planar with a maximum deviation of 0.0273 (14) Å from the mean plane and oxolane, azepane and pyrrolidine rings in the tricyclic ring system adopt twist, twist-chair and envelope forms, respectively. In the crystal, the am  ...[more]

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