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17α-Ethynyl-17β-hydroxy-12-methyl-4,9-11-estratrien-3-one

✍ Scribed by Précigoux, G. ;Leroy, F. ;Geoffre, S.

Book ID
114527413
Publisher
International Union of Crystallography
Year
1980
Weight
268 KB
Volume
36
Category
Article
ISSN
0567-7408

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✍ Sheng, Liu-Qing ;Liang, Wan-Gen ;Chen, Gang ;Shen, Hua-Feng 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 259 KB

In the title molecule, C~21~H~26~O~2~, there are two C=C bonds [1.321 (4) and 1.334 (4) Å], which contribute to the planarity of ring __A__ along with the carbonyl group. Rings __B__ and __C__ have regular chair conformations, while ring __D__ has an envelope conformation. In the crystal structure,