Johnson Matthey Inc.

Johnson Matthey Public Limited Company

Jean F Vollano

Michael J Abrams

Christen M Giandomenico

Barry A Murrer

Gerald E Bossard

Robert C Brooks

Donald H Picker

Fontaine C Bradley

Geoffrey W Henson

Danielle T Frost

Chris M Giandomenico

Ruthenium containing phthalocyanin photosensitizers

Platinum complexes, having anti-tumor activity, which include at least one functional ketone group or aldehyde, optionally conjugated as a linkable hydrazone complex. The functional ketone and aldehyde groups and the functionalized hydrazone complexes are linkable to antibodies, proteins, peptides and compounds having free amine, hydrazine or hydrazide functionality. Such agents are useful as targeted site-specific or disease specific chemotherapeutic agents.

Anti-tumor platinum complexes

A Pt(IV) complex of the formula ##STR1## wherein A and A' are NH.sub.3 or an amino group; R and R.sup.1 are hydrogen, alkyl, alkenyl, aryl, aralkyl, alkylamino or alkoxy or functionalized derivatives thereof; and X is halogen or alkyl mono- or dicarboxylate. The complexes have high antitumor activity, particularly when administered orally.

Pt(IV) complexes as anti-tumor agents

The present invention relates to compounds of gallium (III) which can be given orally to achieve high serum levels of gallium (III) for the treatment of hypercalcemia of malignancy and related disorders of bone metabolism. Complexes of gallium (III) of the formula (I) ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.8 n-alkyl and R.sub.2 is H or C.sub.1 -C.sub.2 alkyl, or R.sub.1 and R.sub.2 together form tetra- or penta-methylene and wherein said complex is useful in increasing calcium content of bone tissue and decreasing bone resorption, are used in an amount sufficient to cause an increase in calcium content of said bone and to cause decreased bone resorption.

Gallium compounds

A Pt(IV) complex of the formula ##STR1## wherein A and A' are NH.sub.3 or an amino group; R and R' are hydrogen, alkyl, alkenyl, aryl, aralkyl, alkylamino or alkoxy or functionalized derivatives thereof; and X is halogen or alkyl mono- or dicarboxylate. The complexes have high antitumor activity, particularly when administered orally.

Pt(IV) complexes

The present invention relates to a method of potentiating radiation therapy using Co(III) complexes of water soluble, synthetic meso-substituted porphyrins. The method results in the sensitization of both well oxygenated (oxic) and oxygen deficient (hypoxic) tumor cells.

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Exton, PA, United States of America

Jean F Vollano