Oxidative cleavage of 22-hydroxymethylene-21-ketones of the 20,28β-epoxy-18α,19βΗ-ursane series

E. Klinotová; J. Beneš; A. Vystrčil

doi:10.1135/cccc19752861

Oxidative cleavage of 22-hydroxymethylene-21-ketones of the 20,28β-epoxy-18α,19βΗ-ursane series

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19752861 ◽

1975 ◽

Vol 40 (9) ◽

pp. 2861-2868 ◽

Cited By ~ 3

Author(s):

E. Klinotová ◽

J. Beneš ◽

A. Vystrčil

Keyword(s):

Oxidative Cleavage

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Oxidative cleavage of an alkene with catalytic ruthenium tetroxide

ChemSpider Synthetic Pages ◽

10.1039/sp186 ◽

2002 ◽

Cited By ~ 1

Author(s):

Meriel Kimberley

Keyword(s):

Oxidative Cleavage ◽

Ruthenium Tetroxide

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Faculty Opinions recommendation of The Dps protein of Agrobacterium tumefaciens does not bind to DNA but protects it toward oxidative cleavage: x-ray crystal structure, iron binding, and hydroxyl-radical scavenging properties.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1004064.191655 ◽

2003 ◽

Author(s):

Elizabeth Theil

Keyword(s):

Crystal Structure ◽

Agrobacterium Tumefaciens ◽

Hydroxyl Radical ◽

Radical Scavenging ◽

Oxidative Cleavage ◽

Iron Binding ◽

X Ray ◽

Radical Scavenging Properties ◽

Dps Protein

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Protoxylogranatin B, a Key Biosynthetic Intermediate from Xylocarpus granatum: Suggesting an Oxidative Cleavage Biogenetic Pathway to Limonoid

The Open Natural Products Journal ◽

10.2174/1874848101003010001 ◽

2010 ◽

Vol 3 (1) ◽

pp. 1-5 ◽

Cited By ~ 6

Author(s):

Wei-Min Hu ◽

Jun Wu

Keyword(s):

Oxidative Cleavage ◽

Xylocarpus Granatum

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

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19971642 ◽

1997 ◽

Vol 62 (10) ◽

pp. 1642-1649 ◽

Cited By ~ 2

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.

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Author response for "Synthesis of magnetic core@dual shells Fe 3 O 4 @ SiO 2 @ WO 3 nanocatalyst for olefin double bond oxidative cleavage"

10.1002/cjce.23931/v2/response1 ◽

2020 ◽

Author(s):

Arnaud Gandon ◽

Chinh‐Chien Nguyen ◽

Serge Kaliaguine ◽

Trong‐On Do

Keyword(s):

Double Bond ◽

Magnetic Core ◽

Oxidative Cleavage ◽

Author Response

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Oxidative Cleavage of Indoles Mediated by Urea Hydrogen Peroxide or H2O2 in Polar Solvents

Advanced Synthesis & Catalysis ◽

10.1002/adsc.202100214 ◽

2021 ◽

Author(s):

Natalia Llopis ◽

Patricia Gisbert ◽

Alejandro Baeza

Keyword(s):

Hydrogen Peroxide ◽

Oxidative Cleavage ◽

Polar Solvents ◽

Urea Hydrogen Peroxide

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Visible-light-initiated Catalyst-free Oxidative Cleavage of Triaryl-Substituted Alkenes C=C Bonds under Ambient Conditions

Green Chemistry ◽

10.1039/d1gc00716e ◽

2021 ◽

Author(s):

Wenjing Li ◽

Shun Li ◽

Lihua Luo ◽

Yichen Ge ◽

Jiaqi Xu ◽

...

Keyword(s):

Visible Light ◽

Room Temperature ◽

Ambient Air ◽

Oxidative Cleavage ◽

Ambient Conditions ◽

Blue Led ◽

Catalyst Free

The catalyst-free oxidative cleavage of (Z)-triaryl-substituted alkenes bearing pyridyl motif with ambient air under irradiation of blue LED at room temperature has been developed. The reaction was facile and scalable,...

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