Hydrogels for the controlled release of bioactive materials

Details Hydrogels for the controlled release of bioactive materials Hydrogels for the controlled release of bioactive materials

2011-07-19

2011-07-19

Landau, Sharmila G. (Department: 1611)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

C424S049000, C424S070100, C510S101000, C510S103000, C510S104000, C512S004000, C514S252100, C514S263370

Reexamination Certificate

active

07981436

ABSTRACT:
The present invention relates to the formation of hydrogels based on guanosine hydrazide derivatives in the presence of cations. The hydrogels can be used as a carrier/delivery system for biologically active substances such as flavors, fragrances, insect attractants or repellents, bactericides, fungicides, pharmaceuticals or agrochemicals.

REFERENCES:
patent: WO 01/51689 (2001-07-01), None
J. Sunamoto et al., XP008066012, “Synthesis of Folic Acid Moiety-Conjugated Hydrophobized Pullulan (FA-CHP) as a Carrier of Anticancer Drugs ”, Polymer Preprints, vol. 45, No. 2, pp. 440-441 (2004).
N. Sreenivasachary et al., XP008066044, “Gelation-Driven Component Selection In The Generation Of Constitutional Dynamic Hydrogels Based On Guanine-Quartet Formation”, Proceedings Of The National Academy Of Sciences (PNAS), vol. 102, No. 17, pp. 5938-5943, (2005).
W. Guschlbauer et al., “Four-Stranded Nucleic Acid Structures 25 Years Later: From Guanosine Gels to Telomer DNA”, Journal of Biomolecular Structure & Dynamics, ISSN 0739-1102, vol. 8, Issue No. 3 (1990).
J. Sunamoto et al., XP008066012, “Synthesis of Folic Acid Moiety-Conjugated Hydrophobized Pullulan (FA-CHP) as a Carrier of Anticancer Drugs”, Polymer Preprints, vol. 45, No. 2, pp. 440-441 (2004).
N. Sreenivasachary et al., XP008066044, “Gelation-Driven Component Selection In The Generation of Constitutional Dynamic Hydrogels Based on Guanine-Quartet Formation”, Proceedings Of The National Academy Of Sciences (PNAS), vol. 102, No. 17, pp. 5938-5943, (2005).
W. Guschlbauer et al., “Four-Stranded Nucleic Acid Structures 25 Years Later: From Guanosine Gels to Telomer DNA”, Journal of Biomolecular Structure & Dynamics, ISSN 0739-1102, vol. 8, Issue No. 3 (1990).
International Search Report and Written Opinion, PCT/IB06/50876, mailed Jul. 20, 2006.

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