IT is generally admitted that the greater stability of A2 -over A3-5asteroidal enes determines the A2 structure of 3-keto-Z-steroid enol derivatives.ly2 This structure was actually proved for cholestanone ethyl enol ether, 3 prepared by both pyrolysis of diethylaceta14 and partial hydrogenation of c
Microbial hydroxylation of steroidal Δ3,5 enol acetates
✍ Scribed by Herbert L. Holland; Barbara J. Auret
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- French
- Weight
- 98 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0040-4039
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In the course of studies of A5-3P-hydroxy steroids in human urine, the absorption spectra of these compounds in two sulfuric acid reagents proved of value in arriving at their identification (1). Wilson (2) has previously reported spectra of 11 steroids in sulfuric acid reagents. Smith et al. ( 3) h
## 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