2014
DOI: 10.1002/ejoc.201301622
|View full text |Cite
|
Sign up to set email alerts
|

Synthesis and Characterization of para‐Substituted N,N′‐Dihydroxybenzamidines and Their Derivatives as Model Compounds for a Class of Prodrugs

Abstract: A synthetic strategy for previously unknown para-substituted N,NЈ-dihydroxybenzamidines and their O-monosubstituted and O,OЈ-disubstituted methyl, benzyl, and tetrahydropyranyl derivatives is described. The procedure starts with the corresponding hydroxamic acid chlorides, which after dehydrohalogenation give nitrile oxides. These intermediates in turn react with O-substituted hydroxylamines to afford the desired N,NЈ-dihydroxybenzamidines after workup. This new class of potential prodrugs was characterized by… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
6
0
1

Year Published

2015
2015
2024
2024

Publication Types

Select...
9
1

Relationship

0
10

Authors

Journals

citations
Cited by 21 publications
(7 citation statements)
references
References 21 publications
0
6
0
1
Order By: Relevance
“…The 1 H and 13 C NMR spectra of the aminodioximes 10 , recorded in DMSO- d 6 , revealed the presence of an equilibrium between the imino and the amino forms, which is shifted prevalently toward the amino tautomer . On the basis of the proposed reaction mechanism (Scheme ), and considering that the transition from one oxime geometrical isomer to another requires either high temperature or acid or base catalysis or ultraviolet light, it is reasonable to assume that the first oxime retains the syn configuration while the amidoxime moiety can, in principle, exist as a mixture of tautomers.…”
Section: Resultsmentioning
confidence: 99%
“…The 1 H and 13 C NMR spectra of the aminodioximes 10 , recorded in DMSO- d 6 , revealed the presence of an equilibrium between the imino and the amino forms, which is shifted prevalently toward the amino tautomer . On the basis of the proposed reaction mechanism (Scheme ), and considering that the transition from one oxime geometrical isomer to another requires either high temperature or acid or base catalysis or ultraviolet light, it is reasonable to assume that the first oxime retains the syn configuration while the amidoxime moiety can, in principle, exist as a mixture of tautomers.…”
Section: Resultsmentioning
confidence: 99%
“…It is known that addition of N-chlorosuccinimide (NCS) to the p-substituted benzaldoximes gives directly the corresponding benzhydroxamic acid chlorides 52, which on treatment with substituted hydroxylamines produce N,N-substituted amidines 85-90 (Scheme 41). 71,72 Scheme 41. Synthesis of N,N'-substituted amidines 85-90.…”
Section: Synthesis Of Nn-substituted Amidinesmentioning
confidence: 99%
“…Як модельні сполуки для пошуку ефективних проліків були досліджені похідні N-гідроксибензамідину та новий клас проліків -N,N'-дигідроксибензамідинові похідні [51,52] (схема 11).…”
Section: Nn'-дигідроксибензамідинові похідніunclassified