Synthesis and Antitumor Activity of 20(S)-Camptothecin Derivatives. A-Ring-Substituted 7-Ethylcamptothecins and Their E-Rig-Modified Water-Soluble Derivatives.
Camptothecin derivatives as chemoradiosensitizing agents
申请人:Yang Li-Xi
公开号:US20070093432A1
公开(公告)日:2007-04-26
Camptothecin-based compounds are useful for treating a neoplasm in mammalian subjects by administering such compound to the subjects in combination with radiotherapy, i.e., the treatment of tumors with radioactive substances or radiation from a source external to the subject. Camptothecin-based compounds are modified by positioning at least one electron-affinic group around the camptothecin structure to enhance their value in combination with radiotherapy. New Camptothecin-based compounds are disclosed that are useful for treating cancer by administering the novel compounds alone or in combination with radiotherapy.
The present invention provides novel conjugates of camptothecin and camptothecin analogs with a linker and an HSA-binding moiety. The novel conjugates are prodrug forms of the camptothecin or camptothecin analogs and can be used to treat mammalian cell proliferative diseases, such as cancer.
A polymeric scaffold useful for conjugating with a protein based recognition-molecule (PBRM) to form a PBRM-polymer-drug conjugate is described herein. The scaffold includes one or more terminal maleimido groups. Also disclosed is a PBRM-polymer-drug conjugate prepared from the scaffold. Compositions comprising the conjugates, methods of their preparation, and methods of treating various disorders with the conjugates or their compositions are also described.
[EN] SELECTIVE ARYLATION OF DICHALCOGENIDES IN BIOMOLECULES<br/>[FR] ARYLATION SÉLECTIVE DE DICHALCOGÉNIDES DANS DES BIOMOLÉCULES
申请人:MASSACHUSETTS INST TECHNOLOGY
公开号:WO2016205798A1
公开(公告)日:2016-12-22
Disclosed are chemical transformations for the conjugation of unprotected peptide biomolecules. The processes feature several significant advantages over existing methods of peptide modification, including specificity towards selenocysteine over other nucleophiles (e.g., amines, hydroxyls), excellent functional group tolerance, and mild reaction conditions.
The present invention relates to a bifunctional hydroxy-bisphosphonic acid derivative of formula (I) below:
or a pharmaceutically-acceptable salt thereof,
a method for producing the same, pharmaceutical compositions containing the same,
and the use thereof as a medicament,
as well as a compound of formula (II) below:
or a pharmaceutically-acceptable salt thereof,
and the use thereof for producing a vectorized molecule of therapeutic or diagnostic purpose.