Oxidation of Ellipticine withFremy's Salt under Sonochemical Conditions
摘要:
Ellipticine (E) 1 is an indolic alkaloid with antitumor activity1). Some of its phenolic derivatives as N-methyl-9-hydroxyellipticine (celiptinium), obtained from 9-hydroxyellipticine (9-OH E), exhibit high cytotoxic activity2). Syntheses of 9-OH E from 5-methoxyindole via 9-methoxyellipticine are not satisfactory if one considers yields and cost.
Oxidation of Ellipticine withFremy's Salt under Sonochemical Conditions
摘要:
Ellipticine (E) 1 is an indolic alkaloid with antitumor activity1). Some of its phenolic derivatives as N-methyl-9-hydroxyellipticine (celiptinium), obtained from 9-hydroxyellipticine (9-OH E), exhibit high cytotoxic activity2). Syntheses of 9-OH E from 5-methoxyindole via 9-methoxyellipticine are not satisfactory if one considers yields and cost.
Bioactivation of the antitumor drugs 9-hydroxyellipticine and derivatives by a peroxidase-hydrogen peroxide system
作者:Christian Auclair、Claude Paoletti
DOI:10.1021/jm00135a010
日期:1981.3
(see Table I) of various antitumor drugs derivedfrom ellipticine results, in most cases, in the possible further oxidation of the hydroxylated drugs into free radicals and quinone products in the presence of a peroxidase-H2O2 system. Except for the N6-methyl derivative, free radicals of hydroxyellipticines do not react with neighboring molecules. However, quinone products have been found to be strong
Autoxidation of the antitumor drug 9-hydroxyellipticine and its derivatives
作者:Christian Auclair、Keith Hyland、Claude Paoletti
DOI:10.1021/jm00364a015
日期:1983.10
In aqueoussolution and using molecular oxygen as electron acceptor, the antitumor drug 9-hydroxyellipticine (9-OH-E) undergoes a spontaneous oxidation to give hydrogen peroxide (H2O2), the quinone imine 9-oxoellipticine (9-oxo-E), and a dimer of 9-OH-E(9-OH-E2). Electron paramagnetic resonance (EPR) experiments performed either in alkaline Me2SO or in phosphate buffer in the presence of the spin trap
Evidences for an efficient demethylation of methoxyellipticine derivatives catalyzed by a peroxidase
作者:Gerard Meunier、Bernard Meunier
DOI:10.1021/ja00294a064
日期:1985.4
Oxidation of Ellipticine withFremy's Salt under Sonochemical Conditions
作者:Felix Pautet、Pascal Formisyn、Jacques Bourgois
DOI:10.1002/ardp.19933260815
日期:——
Ellipticine (E) 1 is an indolic alkaloid with antitumor activity1). Some of its phenolic derivatives as N-methyl-9-hydroxyellipticine (celiptinium), obtained from 9-hydroxyellipticine (9-OH E), exhibit high cytotoxic activity2). Syntheses of 9-OH E from 5-methoxyindole via 9-methoxyellipticine are not satisfactory if one considers yields and cost.