𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A novel rearrangement of steroidal α-hydroxy oximes

✍ Scribed by Dušan Miljković; Katarina Penov-Gaši; Evgenija Djurendić; Marija Sakač; Ljubica Medić-Mijačević; Vjera Pejanović; Slobodanka Stanković; Dušan Lazar


Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
80 KB
Volume
38
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


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.


📜 SIMILAR VOLUMES


Steroidal Cyclobutanones, IV. Heterocycl
✍ Blaszczyk, Krzysztof ;Paryzek, Zdzislaw 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 561 KB

## Abstract Diastereomeric 5α‐cholestane‐3,3′‐spiro‐2′,2′‐dichlorocyclobutanones 1 and 2 served as starting materials for the synthesis of related heterocyclic spirane derivatives. Thus, diastereomeric 5α‐cholestane‐3,3′‐spiropyrrolidin‐5′‐one (10, 11), ‐3′‐spiro‐γ‐lactone (12, 16), and ‐3′‐spirote

Novel steroidal chiral auxiliaries: Enan
✍ Deeng-Lih Huang; Richard W. Draper 📂 Article 📅 1994 🏛 Elsevier Science 🌐 French ⚖ 161 KB

## The synthesis is reported of three novel steroidal chiral auxiliaries (4) which were used to generate an a-hydroxy acid in high optical parity (90-9896 cc). Chiral auxiliaries for enantioselective syntheses are of current interest13 Cyclohexyl based chiial auxiliaries, such as menthol, S-phenyl

Unusual Acid-Catalyzed Rearrangement of
✍ Walter Fuhrer; Vittorio Rasetti; Grety Rihs 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 German ⚖ 478 KB

## Abstract 2‐[2‐(Alkylimino)‐2‐phenylethylidene]pyrrolidines (vinamidines, **3**–**6**) were obtained either __via__ activation of the corresponding vinologous amide **1** with __Meerwein__ salt and subsequent treatment of the intermediate **2** with an amine, or more directly by acid‐catalyzed co