16α,17-Epoxy-11α-(<i>p</i>-tolylsulfonyloxy)pregn-4-ene-3,20-dione

Nie, Qiang; Wang, Jingkang; Wang, Shi; Zhang, Meijing

doi:10.1107/s1600536805006835

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2013

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“…The bond distances and angles in the title compound ( Fig. 1) agree very well with the corresponding bond distances and angles reported in a closely related compound (Nie et al, 2005). The title compound has three six-membered rings (A/B/C) and one five-membered rings (D).…”

Section: Supporting Informationsupporting

confidence: 83%

1β,15α-Dihydroxy-16α,17-epoxypregn-4-ene-3,20-dione

2013

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The title molecule, C21H28O5, is composed of three six-membered rings (A/B/C) and a five-membered ring (D). Ring A adopts a 1α-sofa conformation, while rings B and C adopt chair conformations. Cyclopentane ring D adopts a 14α-envelope conformation. In the crystal, O—H⋯O hydrogen bonds lead to the formation of ribbons running along the a axis. The structure is further consolidated by C—H⋯O interactions, which link the molecules head-to-tail into ribbons along the a axis.

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Section: Supporting Informationsupporting

confidence: 83%