Synthesis of some radiolabeled 17α-ethynyl-19-nor steroids
✍ Scribed by J. A. Kepler; G. F. Taylor
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- French
- Weight
- 229 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
During the course of study of the metabolism of some anti-fertility drugs it was necessary to prepare several 17cc-ethynyl-19-nor steroids. Although the use of some of the specifically labeled drugs reported here have been cited in the literature
The synthetic scheme employed for the preparation of these steroids is outlined in Chart I. Estradiol labeled either in the 6,7-positions with tritium
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## Abstract The nature of the reactions involved in the synthesis of 3‐cyclopentyloxy‐19‐nor‐17α‐pregna‐3, 5‐dien‐20‐yn‐17‐ol‐7‐^3^H 17‐acetate, allowed the determination of the stereochemistry of the tritium atoms at C‐6 in some of the precursors. One of these precursors was estra‐1, 3, 5 (6)‐trie