[EN] COMPOSITIONS AND METHODS FOR TARGETING METASTATIC TUMORS USING MULTIVALENT LIGAND-LINKED CARBOHYDRATE POLYMERS<br/>[FR] COMPOSITIONS ET METHODES PERMETTANT DE CIBLER DES TUMEURS METASTATIQUES A L'AIDE DE POLYMERES MULTIVALENTS CARBOHYDRATES LIES A UN LIGAND
申请人:PRO PHARMACEUTICALS INC
公开号:WO2005092097A1
公开(公告)日:2005-10-06
Disclosed herein are compositions comprising a drug linked to a multivalent ligand polysaccharide and the use of this composition in the prevention and treatment of cancer. In one aspect, the polysaccharide is obtained by physical and chemical treatment of naturally occurring polymers or semi synthetic polymers which are bridged specifically with one or more anti-cancer chemotherapeutic agents. Another aspect is directed to the effective delivery of the polysaccharide together with the chemotherapeutic agent to diseased tissue including cancerous tissue.
This paper describes an original methodology for peptide bond synthesis avoiding toxic solvents and reactants. Ball-milling stoichiometric amounts of Boc-protected α-amino acid N-carboxyanhydrides (Boc-AA-NCA) or Boc-protected α-amino acid N-hydroxysuccinimideesters (Boc-AA-OSu) with α-amino acid alkyl ester salts in the presence of NaHCO3 and a minimal quantity of EtOAc led to the production of di-
[EN] EFFICIENT PREPARATION OF DOLASTATIN AND AURISTATIN ANALOGS THROUGH A COMMON INTERMEDIATE<br/>[FR] PRÉPARATION EFFICACE D'ANALOGUES DE DOLASTATINES ET D'AURISTATINES PAR LE BIAIS D'UN INTERMÉDIAIRE COMMUN
申请人:SIGMA ALDRICH CO LLC
公开号:WO2021183542A1
公开(公告)日:2021-09-16
Methods for making a dolastatin, auristatin or related compounds comprising the steps of providing a universal dolastatin core of Formula (I) reacting the C-terminal carboxylic acid group with an amine (A) to form an amide bond and reacting the N-terminal amine with a carboxylic acid (CA) to form an amide bond, wherein the steps can be performed in either order. Also provided are an isolated salt of the universal dolastatin core for use in preparation of dolastatins, auristatins and related compounds. Also provided are a number of intermediates and process steps which are useful for the preparation of high purity dolastatin core and high purity dolastatin and auristatin compounds.
Aminoacyl prodrug derivatives and medicaments for treatment of thromboembolic disorders
申请人:Lerchen Hans-Georg
公开号:US20100292230A1
公开(公告)日:2010-11-18
The present application relates to prodrug derivatives of 5-chloro-N-((5S)-2-oxo-3-[4-(3-oxomorpholin-4-yl)phenyl]-1,3-oxazolidin-5-yl}methyl)thiophene-2-carboxamide, processes for their preparation, their use for the treatment and/or prophylaxis of diseases, and their use for the manufacture of medicaments for the treatment and/or prophylaxis of diseases, especially of thromboembolic disorders.
The unprecedented electrophilic iodo-mediated cyclization of α-amino-ynones afforded enantiomerically enriched β-iodopyrrolin-4-ones in excellent yields under mild conditions. The starting substituted α-amino-ynones were obtained from the chiral pool by selective mono-addition of an organolithium to optically pure N-protected carboxyanhydrides of amino acids (UNCAs).