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17α-Hydroxy­pregna-1,4-diene-3,20-dione

✍ Scribed by Sheng, Liu-Qing ;Pan, Han-Min ;Chen, Chao-Tian ;Chen, Gang

Publisher
International Union of Crystallography
Year
2006
Tongue
English
Weight
127 KB
Volume
63
Category
Article
ISSN
1600-5368

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✦ Synopsis

In the title steroid compound, C 21 H 28 O 3 , the cyclohexadiene ring has a planar structure, while the cyclopentane ring displays an envelope configuration. Classical O-HÁ Á ÁO and weak C-HÁ Á ÁO hydrogen bonding helps to stabilize the crystal structure.

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11β-Hydroxy­pregna-1,4,16-triene-3,20-di
11β-Hydroxy­pregna-1,4,16-triene-3,20-dione
✍ Wu, Xiao-Hong ;Wang, Yong-Li ;Zhou, Li-Na 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 271 KB

The steroidal title compound, C 21 H 26 O 3 , possesses normal geometrical parameters. Ring A has a 1-sofa conformation, and rings B and C are in nearly perfect chair conformations. An O-HÁ Á ÁO hydrogen bond helps to establish the crystal packing.

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