Anticancer and antiprotozoal dihydroartemisinene and...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C549S348000

Reexamination Certificate

active

07842720

ABSTRACT:
This invention comprises compositions containing dihydroartemisinin- and dihydroartemisitene-dimers with activity as anticancer or anticancer metastasis agents and anti-protozal, including anti-malarial and anti-leishmanial properties. This invention also describes methods of preparation of these compositions and methods of use of such compositions for the treatment of cancer or prevention of cancer metastasis, and protozoal infections, including malaria, or leishmaniasis. The compounds of this invention represent a potential new class of anti-tumor or anti-metastasis agents, one that has shown promising activity against solid tumors.

REFERENCES:
patent: 5677468 (1997-10-01), Zheng et al.
patent: 5840925 (1998-11-01), Zheng et al.
patent: 5856351 (1999-01-01), Zheng et al.
patent: 6790863 (2004-09-01), ElSohly et al.
patent: 2004/0072896 (2004-04-01), ElSohly et al.
patent: 2004/0229938 (2004-11-01), ElSohly
patent: 2004/0266860 (2004-12-01), ElSohly
patent: WO 97/01548 (1997-01-01), None
patent: WO 99/65914 (1999-12-01), None
patent: WO 03/035651 (2003-01-01), None
patent: WO 2004/028476 (2004-04-01), None
Posner, G. et al., “Malaria-Infected Mice are cured by a single dose of Novel Artemisinin Derivatives” J. Med. Chem., 50:2516-2519 (2007).
Paik, Ik-Hycon et al., “Second Generation, Orally Active, Antimalarial, Artemisinin-Derived Trioxane Dimers with High Stability, Efficacy, and Anticancer Activity” J. Med. Chem., 49:2731-2734 (2006).
Grellepois, F. et al., “Synthesis of New Artemisinin-Derived Dimers by Self-Cross-Metathesis Reaction” Organic Letters, 7(23):5219-5222 (2005).
Jung, M. et al., “Recent Advances in Artemisinin and Its Derivatives as Antimalarial and Antitumor Agents” Current Medicinal Chemistry, 11:1265-1284 (2004).
Posner, G. et al., “Anticancer and Antimalarial Efficacy and Safety of Artemisinin-Dervied Trioxane Dimers in Rodents” J. Med. Chem., 47:1299-1301 (2004).
Posner, G. et al., “Orally Active, Antimalarial, Anticancer, Artemisinin-Derived Trioxane Dimers with High Stability and Efficacy” J. Med. Chem., 46:1060-1065 (2003).
Posner, G. et al., “New Chemical and Biological Aspects of Artemisinin-Derived Trioxane Dimers” Bioorganic & Medicinal Chemistry, 10:227-232 (2002).
Ekthawatchai, S. et al., “C-16 Artemisinin Derivatives and Their Antimalarial and Cytotoxic Activities: Syntheses of Artemisinin Monomers, Dimers, Trimers, and Tetramers by Nucleophilic Additions to Artemisitene” J. Med. Chem., 44:4688-4695 (2001).
Robert, A. et al., “Characterization of the Alkylation Product of Heme by the Antimalarial Drug Artemisinin” Angew. Chem. Int. Ed. 40(10) 1954-1957 (2001).
Kapetanaki, S. et al., “Ferryl-oxo heme intermediate in the antimalarial mode of action of artemisinin” Federation of European Biochemical Societies, Letters 474: 238-241 (2000).
Usuda, M. et al., “Interaction of Antimalarial Agent Artemisinin with Cyclodextrins” Drug Development and Industrial Pharmacy, 26(6):613-619 (2000).
Li, Ying. et al., “Synthesis and Antimalarial Activity of Artemisinin Derivatives Containing and Amino Group” J. Med. Chem. 43:1635-1640 (2000).
Posner, G. et al., “Antimalarial, antiproliferatie, and Antitumor Activities of Artemisinin-Derived, Chemically Robust, Tioxane Dimers” J. of Medicinal Chem. 42(21): 4275-4280 (1999).
Posner, G. et al., “Trioxane Dimers have Potent Antimalarial, Antiproliferative and Antitumor Activities In Vitro” Bioorganic & Medicinal Chemistry, 5(7): 1257-1265 (1997).
Galal, A. et al., “Preparation and characterization of a New Artemisinin-Derived Dimer” J. Nat. Prod. 59:917-920 (1996).
Beekman, A. et al., “Cytotoxicity of Artemisinin, a Dimer of Dihyroartemisinin, Artemisitene and Eupatoriopicrin as Evaluated by the MTT and Clonogenic Assay” Phytotherapy Research, 10:140-144 (1996).
Meshnick, S. et al., “Iron-Dependent Free Radical Generation from the Antimalarial Agent Artemisinin (Qinghaosu)” Antimicrobial Agents and Chemotherapy, 37(5): 1108-1114 (1993).
Jung, M. et al. “Recent advances in artemisinin and its derivatives as antimalarial and antitumor agents” Current Medicinal Chemistry 200405 NL, vol. 11, No. 10, May 2004.
Posner et al. Trioxane dimers have potent antimalarial, antiproliferative and antitumor activites in vitro: Bioorganic & Medicinal Chemistry, Pergamon, GB, vol. 7, No. 7, Jan. 1997.
Supplemental European Search Report corresponding to EP 05 76 2351 issued Feb. 11, 2010.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Anticancer and antiprotozoal dihydroartemisinene and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Anticancer and antiprotozoal dihydroartemisinene and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anticancer and antiprotozoal dihydroartemisinene and... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4162406

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.