This invention provides novel substrate compounds that selectively inhibit the proliferation of pathological cells, for example, pathological calls that endogenously overexpress a target enzyme that confers resistance to biologic and chemotherapeutic agents. The enzyme acts on a substrate compound to 1) convert it to a cellular toxin and/or 2) release a toxic byproduct. In one embodiment, the activity of the target enzyme has been greatly enhanced in a target cell as a result of loss of tumor suppressor function and/or selection resulting from previous exposure to chemotherapy. In another embodiment, the pathological cell contains a target enzyme that is an expression product of an infectious agent in the cell. Further provided by this invention is a method for treating a subject by delivering to the subject a prodrug as described herein. The prodrugs of this invention may be used alone or in combination with other chemotherapeutics or alternative anti-cancer therapies such as radiation.
Process for the preparation of pyrimidine nucleosides
申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0465164A1
公开(公告)日:1992-01-08
A process is provided for the preparation of a compound of formula (I) or a salt thereof:
wherein R¹ is hydrogen or a C₁₋₄ alkyl, comprising reacting a compound of formula II:
with an agent serving to introduce the alkynyl radical of formula -C≡CR¹ (wherein R¹ is as described above) at the 5-position of the pyrimidine base, the reaction being carried out in the presence of an N₁₋₆ alkylmorpholine, wherein said alkyl moiety being optionally substituted by an alkoxy or halogen group; and optionally thereafter converting into a salt.
[EN] CHEMICAL COMPOUNDS<br/>[FR] COMPOSES CHIMIQUES
申请人:UNIV CARDIFF
公开号:WO2005012327A2
公开(公告)日:2005-02-10
Phosphoramidate derivatives of nucleotides and their use in the treatment of cancer are described. The base moieties of, for example, each of deoxyuridine, cytarabine, gemcitabine and citidine may be substituted at the 5-position. The phosphoramidate moiety has attached to the P atom an aryl-O moiety and an α-amino acid moiety. The α-amino acid moiety may correspond to or be derived from either a naturally occurring or a non-naturally occurring amino acid.
Phosphoramidate derivatives of nucleotides and their use in the treatment of cancer are described. The base moieties of, for example, each of deoxyuridine, cytarabine, gemcitabine and citidine may be substituted at the 5-position. The phosphoramidate moiety has attached to the P atom an aryl-O moiety and an α-amino acid moiety. The a-amino acid moiety may correspond to or be derived from either a naturally occurring or a non-naturally occurring amino acid.
This invention provides novel substrate compounds that selectively inhibit the proliferation f path logical cells, for example, pathological cells that endogenously overexpress a target enzyme that confers resistance to biologic and chemotherapeutic agents. The enzyme acts on a substrate compound to 1) convert it to a cellular toxin and/or 2) release a toxic byproduct. In one embodiment, the activity of the target enzyme has been greatly enhanced in a target cell as a result of loss f tum r suppressor function and/or selection resulting from previous exposure to chemotherapy. In another embodiment, the pathological cell contains a target enzyme that is an expression product of an infectious agent in the cell. Further provided by this invention is a method for treating a subject by delivering to the subject a prodrug as described herein. The prodrugs f this invention may be used alone or in combination with ther chemotherapeutics or alternative anti-cancer therapies such as radiation.