Synthesis and biological activity of O-acyl and O-alkyl chelidonine derivatives
摘要:
A group of 11 derivatives of chelidonine was obtained by acylations and/or alkylations of the secondary hydroxyl group with the aim of testing their biological activity. This paper focuses on the new derivatives influence on CNS in mice. The highest activity was observed for compounds 2c, 3c and 4, which produced antinociceptive and antiserotoninergic effects, not recorded for the parent alkaloid 1. (C) 2001 Editions scientifiques et medicales Elsevier SAS.
Quaternary chelidonine and alkaloid derivatives, process for their preparation and their use in the manufacture of medicaments
申请人:Nowicky, Wassyl, Dipl.-Ing. DDr.
公开号:EP1459753A1
公开(公告)日:2004-09-22
The invention relates to alkaloid reaction products obtainable in a process wherein alkaloids are reacted with an alkylating agent, preferably thiotepa, whereafter unreacted alkylating agent and other water-soluble compounds are removed from the reaction mixture by washing with water or a suitable aqueous solvent, whereafter the reaction mixture is subjected to a treatment with strong acid, preferably hydrogen chloride (HCl), to precipitate a water soluble salt of the reaction products. The precipitated reaction products comprise at least one quaternary alkaloid derivative and are suitable as drugs for prophylactic or therapeutic application, particularly in the treatment of immunological or metabolic dysfunctions, and cancer.
[EN] QUATERNARY ALKALOID DERIVATIVES OF CHELIDONIUM MAJUS L<br/>[FR] DERIVES ALCALOIDES QUATERNAIRES DE CHELIDONIUM MAJUS L
申请人:NOWICKY WASSILI
公开号:WO2006032380A1
公开(公告)日:2006-03-30
The invention relates to alkaloid reaction products obtainable in a process wherein alkaloids are reacted with a derivatizing agent, preferably thiotepa or another one of the compounds listed in Fig.3, whereafter unreacted derivatizing agent and other water-soluble compounds are removed from the reaction mixture by washing with water or a suitable aqueous solvent, whereafter the reaction mixture is subjected to a treatment with strong acid, preferably hydrogen chloride (HCI), to precipitate a water soluble salt of the reaction products. The precipitated reaction products comprise at least one quaternary alkaloid derivative and are suitable as drugs for prophylactic or therapeutic application, particularly in the treatment of immunological or metabolic dysfunctions, and cancer.
A method for extracting valuable alkaloid materials from plants containing the same comprising slurrying the comminuted plant material in a mixture of water and a cosolvent at a pH of 8.5, adding a nonpolar, water-insoluble, solvent to dissolve the alkaloid, washing the nonpolar phase with acidulated water to convert the alkaloid to the imminium ion or acid salt form, precipitating the alkaloid, and recovering and drying the alkaloid.
Quaternary chelidonine and alkaloid derivatives, process for their preparation and their use in manufacture of medicaments
申请人:Nowicky Wassyl
公开号:US20060154947A1
公开(公告)日:2006-07-13
The invention relates to alkaloid reaction products obtainable in a process wherein alkaloids are reacted with an alkylating agent, preferably thiotepa, whereafter unreacted alkylating agent and other water-soluble compounds are removed from the reaction mixture by washing with water or a suitable aqueous solvent, whereafter the reaction mixture is subjected to a treatment with strong acid, preferably hydrogen chloride (HCI), to precipitate a water soluble salt of the reaction products. The precipitated reaction products comprise at least one quaternary alkaloid derivative and are suitable as drugs for prophylactic or therapeutic application, particularly in the treatment of immunological or metabolic dysfunctions, and cancer.