794-13-8

Upstream product

• 53-16-7 Estrone 
• 1624-62-0 estrone 3-methyl ether 

Relevant academic research and scientific papers

Para Fluorination by N-Fluorobisimide: Synthesis of 10β-Fluoro-3-oxo-1,4-estradiene Steroids

When 1,3,5(10)-estradien-3-ols are treated with N-fluorobisimide in chloroform solution the ortho and para fluorination products are formed.In contrast, when acetic acid is used as a solvent, fluorination in the para position occurs selectively and 10β-fluoro-3-oxo-1,4-estradiene derivatives are formed in high yields.

STEROID DERIVATIVE REGULATORS, METHOD FOR PREPARING THE SAME, AND USES THEREOF

The present invention relates to steroid derivative regulators, a method for preparing the same, and uses thereof. Specifically, the present invention relates to a compound as shown in formula (I), a preparation method therefor, a pharmaceutical composition containing the compound, and uses thereof as a regulator of GABA A receptor for treating depression, convulsion, Parkinson's disease, and nervous system diseases, wherein the substituents of the formula (I) are as defined in the description.

Synthesis, biological evaluation and docking studies of 13-epimeric 10-fluoro- And 10-chloroestra-1,4-dien-3-ones as potential aromatase inhibitors

Fluorination of 13-epimeric estrones and their 17-deoxy counterparts was performed with Selectfluor as the reagent. In acetonitrile or trifluoroacetic acid (TFA), 10β-fluoroestra-1,4-dien-3-ones were formed exclusively. Mechanistic investigations suggest that fluorinations occurred via SET in acetonitrile, but another mechanism was operative in TFA. Simultaneous application of N-chlorosuccinimide (NCS) and Selectfluor in TFA led to a 1.3:1 mixture of 10β-fluoroestra-1,4-dien-3-one and 10β-chloroestra-1,4-dien-3-one as the main products. The potential inhibitory action of the 10-fluoro- or 10-chloroestra-1,4-dien-3-one products on human aromatase was investigated via in vitro radiosubstrate incubation. The classical estrane conformation with trans ring anellations and a 13β-methyl group seems to be crucial for the inhibition of the enzyme, while test compounds bearing the 13β-methyl group exclusively displayed potent inhibitory action with submicromolar or micromolar IC50 values. Concerning molecular level explanation of biological activity or inactivity, computational simulations were performed. Docking studies reinforced that besides the well-known Met374 H-bond connection, the stereocenter in the 13 position has an important role in the binding affinity. The configuration inversion at C-13 results in weaker binding of 13α-estrone derivatives to the aromatase enzyme.

Solvent-Free Fluorination of Electron-Rich Aromatic Compounds with F-TEDA-BF4: Toward “Dry” Processes

An effective protocol for the solvent-free fluorination of electron-rich aromatic compounds with 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (F-TEDA-BF4) is described. The protocol allows the easy and efficie

Efficient oxidative ipso-fluorination of para-substituted phenols using pyridinium polyhydrogen fluoride in combination with hypervalent iodine(III) reagents

Diacetoxyiodobenzene (PIDA) and bis(trifluoroacetoxy)iodobenzene (PIFA) in the presence of pyridinium polyhydrogen fluoride (PPHF) are effective for the fluorination of para-substituted phenols to give a variety of 4-fluorocyclohexa-2,5-dienones in a good yield. (R,S)-1,1′-Bi-5,6,7,8- tetrahydro-2-naphthol (and its monoacetate) yields atropoisomeric fluorocyclohexadienones. The 4-substituted carbamate open-chain phenols were readily converted to fluorohydroindolenone and fluorohydroquinolenone derivatives by intramolecular conjugate addition.

Selective and effective fluorination of organic compounds in water using selectfluor F-TEDA-BF4

(Chemical Equation Presented) Selective and effective fluorination of various types of organic compounds performed in water as the reaction medium using 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor F-TEDA-BF

Efficient synthesis of 4-fluorocyclohexa-2,5-dienone derivatives using n-fluoro-1,4-diazoniabicyclo[2.2.2]octane salt analogues

4-Fluorocyclohexa-2,5-dienone derivatives were obtained in high yield by reaction of para substituted phenols with 1-fluoro-4-chloromethyl-1,4- diazoniabicyclo[2.2.2]octane bis(tetra-fluoro-borate) (1a, Selectfluor(TM) F- TEDA-BF4) or its 4-hyd