2-guanidinylimidazolidinedione compounds and methods of...

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

Reexamination Certificate

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C548S318100

Reexamination Certificate

active

07101902

ABSTRACT:
Disclosed herein are 2-guanidinylimidazolidinedione compounds having the structural formula A or Bwherein R1and R2are each independently a hydrogen, halogen, alkyl, alkoxyl, amino, alkylamino or aralkyl, and wherein R3is an alkyl, cycloalkyl, heterocycloalkyl, acyl, aryl, heteroaryl, alkylaryl, sulfonyl, alkylsulfonyl, and pharmaceutically acceptable salts thereof, and methods of making thereof. Also disclosed are methods of treating, preventing, or inhibiting malaria with the 2-guanidinylimidazolidinedione compounds, and pharmaceutical compositions comprising the 2-guanidinylimidazolidinedione compounds, and kits.

REFERENCES:
patent: 4957936 (1990-09-01), Nakamura et al.
Corcoran et al., American Journal of Tropical Medicine and Hygiene, (1993), 49(4), pp. 473-477.
Corcoran et al. (1993) “Causal Prophylactic and Radical Curative Activity of WR182393 (A Guanylhydrazone) AgainstPlasmodium cynomolgiinMacaca mulatta” Am. J. Trop. Med. Hyg. 49(4):473-477.
Covell et al. (1949) “‘Paludrine’ (Proguanil) in Prophylaxis and Treatment of Malarial Infections caused by a West African Strain ofP. falciparum” British Med. J. 1:88-91.
Curd et al. (1945) “Studies on Synthetic Antimalarial Drugs: Some Biguanide Derivatives as New Types of Antimalarial Substances with Both Therapeutic and Causal Prophylactic Activity” Annals of Trop. Med. And Parasit. 39:208-216.
Shanks et al. (2001) “A New Primaquine Analogue Tafenoquine (WR 238605), for Prophylaxis againstPlasmodium falciparumMalaria” Clin. Infect. Diseases 33:1968-1974.
PCT Search Report and Written Opinion for PCT/US04/38909, mailed Oct. 11, 2005.

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