Estra-1,3,5(10),16-tetraene-3,16-diol diacetate and an easy synthetic route to 16β,17α- and 16α,17α- steroidal glycols
✍ Scribed by James R. Rhone; Max N. Huffman
- Publisher
- Elsevier Science
- Year
- 1965
- Tongue
- French
- Weight
- 145 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
Contrary to a report (1) in the literature that estrone-16 (16-keto-estra-1,3,5(10)-trien-3-01) (2) fails to form an enol acetate, we have found that, with the aid of anhydrous E-toluenesulfonic acid as a catalyst, estra-1,3,5(1C),16-tetraene-3, 16-diol diacetate can be successfully obtained in stable form. This finding opens an easy synthetic route, through lba, 17a-epoxyestra-1,3,5(10)-triene-3,16-diol diacetate, to 16-keto-
📜 SIMILAR VOLUMES
## K. SZULZEWSKY, I. SEIDEL 1nst.itnt far Physikalische Chemie der Akademie der Wissenscheitcn der DDR, Berlin The Crystal Structure of 3-Methoxy-estra-1,3,5( 10) -triene-16a Br,l7@ OH Dedicated to Professor Kate BOLL-DORNBERGER on the occasion of her 70th birthday. The steroid 3-Methoxy-estra-1,
A new metabolite derived from estradiol and considered to be exclusively fetal in origin was obtained from neonatal and pregnancy urine by Hagen et al' and Gurpide et a12. The compound contained four acylable hydroxy functions and formed an acetonide derivative. One tentative structure suggested was
## Abstract The preparation of the tritium labelled fetal metabolite estra‐1, 3, 5 (10)‐3, 15α, 16α, 17β‐tetrol 6,7‐^3^H is described. The material was prepared by oxidation of the tetrol tetraacetate lb to the 6‐keto derivative II. Reduction of the 6‐ketone to the 6‐hydroxy compound III and dehydr
We have discovered that chlorine in 3~-acetoxy-17-chloro-16-formylandrosta-5,16-diene (1) can be smoothly displaced by nitrogen heterocyclic nucleophiles (her) to give heretofore unknown 17-substituted-A t6 steroids in high yields (73-92%). This enabled us to synthesize novel 3~-hydroxy-17-(1H-1,2,4
The base-catalysed rearrangement of 38,16a -dihydroxy-5a -androstan-17-one diacetate (1) in (D6)benzene/ CD,OD to 38,178-dihydroxy-5a -androstan-l6-one (3) is followed by I3C-NMR spectroscopy. By the same procedure, it is determined that in (D6)benzene/CD30D, but under acid catalysis, 1 does not rea