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A novel fragmentation-cyclization reaction of steroidal α-hydroxy oximes

✍ Scribed by Katarina Penov-Gaši; Dušan Miljković; Ljubica Medić-Mijačević; Evgenija Durendić; Julijana Petrović; Vjera Pejanović; Slobodanka Stanković; Dušan Lazar

Book ID
108387212
Publisher
Elsevier Science
Year
1998
Tongue
French
Weight
82 KB
Volume
39
Category
Article
ISSN
0040-4039

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📜 SIMILAR VOLUMES

A novel rearrangement of steroidal α-hyd
A novel rearrangement of steroidal α-hydroxy oximes
✍ Dušan Miljković; Katarina Penov-Gaši; Evgenija Djurendić; Marija Sakač; Ljubica 📂 Article 📅 1997 🏛 Elsevier Science 🌐 French ⚖ 80 KB

By the action of acidic titanium trichloride upon 16..oximino-17ct-benzyl-17l~-hydroxy derivatives in the androstane and estrane series the 16-oxo-1713-bcnzyl-17cc-hydroxy derivatives 6 and 7 with inversed configuration at C~7 were obtained. A mechanism for this novel rearrangement is proposed.

A novel fragmentation of trimethylsilyl
A novel fragmentation of trimethylsilyl ethers of 3β-hydroxy-Δ5-steroids
✍ Ingemar Björkhem; Jan-Årke Gustafsson; Jan Sjövall 📂 Article 📅 1973 🏛 John Wiley and Sons 🌐 English ⚖ 296 KB

## Abstract An ion formed by loss of 56 mass units from the molecular ion is often seen in mass spectra of trimethylsilyl ethers of C~19~ and C~21~ steroids having a 3β‐hydroxy‐Δ^5^ structure and an oxo group at C‐17 or C‐20. The nature of this fragment was investigated by the use of perdeuteriotri