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Preparation of 3,17- and 3,20-Difluoro-Derivatives of the Androst-5-ene and Pregn-5-ene Series.

✍ Scribed by Richard A. Decreau; Charles M. Marson


Publisher
John Wiley and Sons
Year
2005
Weight
18 KB
Volume
36
Category
Article
ISSN
0931-7597

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Synthesis and conformational study of P-
✍ Éva Frank; Balázs Schäfer; Zoltán Mucsi; György Keglevich 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 264 KB

## Abstract The reactions of (20__R__)‐3β‐acetoxy‐21‐hydroxymethylpregn‐5‐en‐20‐ol (**2**) and (20__R__)‐3β‐acetoxypregn‐5‐ene‐20,21‐diol (**11**) with phenylphosphonic dichloride **3** and aryl dichlorophosphates **4–6** afforded novel types of __P__‐heterocyclic androst‐5‐ene derivatives **7–10**