Iron(ii) tetrafluoroborate complexes of new tetradentate C-scorpionates as catalysts for the oxidative cleavage of trans-stilbene with H2O2

2019 ◽  
Vol 48 (38) ◽  
pp. 14478-14489
Author(s):  
Denan Wang ◽  
James R. Gardinier ◽  
Sergey V. Lindeman
Keyword(s):  
Oxidative Cleavage ◽  
Trans Stilbene ◽  
Scorpionate Ligands

Iron(ii) complexes of two new tetradentate C-scorpionate ligands are characterized. Both catalyze stilbene cleavage using either H2O2 or a O2/photocatalyst oxidant.

Oxidative cleavage of trans-stilbene in acetonitrile/water solutions

1992 ◽  
Vol 33 (9) ◽  
pp. 1165-1168 ◽  
Author(s):  
Manfred K. Eberhardt ◽  
William Velasco
Keyword(s):  
Oxidative Cleavage ◽  
Water Solutions ◽  
Trans Stilbene

Novel Chemotherapeutic Agents - The Contribution of Scorpionates

2020 ◽  
Vol 26 (41) ◽  
pp. 7452-7475 ◽  
Author(s):  
Marta A. Andrade ◽  
Luísa M.D.R.S. Martins
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Anticancer Agents ◽  
Medicinal Chemistry ◽  
Bioinorganic Chemistry ◽  
Chemotherapeutic Agents ◽  
Great Role ◽  
Anticancer Properties ◽  
Scorpionate Ligands

: The development of safe and effective chemotherapeutic agents is one of the uppermost priorities and challenges of medicinal chemistry and new transition metal complexes are being continuously designed and tested as anticancer agents. Scorpionate ligands have played a great role in coordination chemistry, since their discovery by Trofimenko in the late 1960s, with significant contributions in the fields of catalysis and bioinorganic chemistry. Scorpionate metal complexes have also shown interesting anticancer properties, and herein, the most recent (last decade) and relevant scorpionate complexes reported for application in medicinal chemistry as chemotherapeutic agents are reviewed. The current progress on the anticancer properties of transition metal complexes bearing homo- or hetero- scorpionate ligands, derived from bis- or tris-(pyrazol-1-yl)-borate or -methane moieties is highlighted.

Synthesis of (15E)-17β-hydroxy-5α-androstane-3,15-dione 15-[O-(Carboxymethyl)]oxime, New Hapten for Dihydrotestosterone (17β-hydroxy-5α-androstan-3-one)

1997 ◽  
Vol 62 (10) ◽  
pp. 1642-1649 ◽  
Author(s):  
Ivan Černý ◽  
Tereza Slavíková ◽  
Vladimír Pouzar
Keyword(s):  
Hydroxy Group ◽  
Carboxy Group ◽  
Title Compound ◽  
Oxidative Cleavage ◽  
Hydroxy Derivative ◽  
Borohydride Reduction ◽  
Protecting Group ◽  
Free Hydroxy Group

Addition of 4-methoxybenzyl alcohol to 3β-hydroxy-5α-androst-15-en-17-one gave the mixture of isomeric 15-(4-methoxyphenyl)methoxy derivatives from which, after acetylation and chromatography, the major 15β isomer was separated. Borohydride reduction gave 17β-hydroxy derivative which was protected as methoxymethyl ether. Oxidative cleavage of protecting group at position 15 and the subsequent Jones oxidation afforded corresponding 15-ketone. Its oximation with O-(carboxymethyl)hydroxylamine, deacetylation and methylation with diazomethane gave protected O-(carboxymethyl)oxime derivative with free hydroxy group at position 3. Its oxidation afforded dihydrotestosterone derivative and successive deprotection of position 17 and of carboxy group led to final (15E)-17β-hydroxy-5α-androstane-3,15-dione 15-[O-(carboxymethyl)]oxime. The title compound was designed as dihydrotestosterone hapten for heterologous radioimmunoassays.

Sign in / Sign up

Export Citation Format

Share Document