𝔖 Bobbio Scriptorium
✦   LIBER   ✦

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


The Crystal Structure of 3-Methoxy-estra
✍ Dr. K. Szulzewsky; I. Seidel 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 522 KB

## 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,

Synthesis of estra-1,3,5(10)-trien-3,15α
✍ Jack Fishman; Henry Guzik 📂 Article 📅 1967 🏛 Elsevier Science 🌐 French ⚖ 162 KB

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

Preparation of tritium labelled estetrol
✍ Jack Fishman; Henry Guzik 📂 Article 📅 1970 🏛 John Wiley and Sons 🌐 French ⚖ 242 KB

## 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

Nucleophilic vinylic “addition-eliminati
✍ Vincent C.O. Njar; Gregory T. Klus; Angela M.H. Brodie 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 283 KB

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

Dissimilar behaviour of 3β, 16α-dihydrox
✍ Darío Doller; Eduardo G. Gros 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 German ⚖ 333 KB

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