摘要:
This invention relates to a novel method for the delivery of cytotoxic drugs to tumor cells by the administration of a tumor-specific antibody-enzyme conjugate that binds to the tumor cells, and the additional administration of a prodrug that is converted at the tumor site, in the presence of the antibody-bound enzyme, to an active cytotoxic drug. According to preferred embodiments of this invention, antibody-enzyme conjugates containing the enzyme, alkaline phosphatase ("AP"), have been used in conjunction with the novel prodrug, etoposide-4'-phosphate or 7-(2'-aminoethyl phosphate)mitomycin or a combination thereof, to effect killing of tumor cells. According to another embodiment of the invention, an antibody-enzyme conjugate containing the enzyme, penicillin V amidase ("PVA"), has been used in conjunction with a novel prodrug, N-(p-hydroxyphenoxyacetyl)adriamycin to effect killing of tumor cells. Still another embodiment of the invention relates to the use of an antibody-enzyme conjugate containing the enzyme, cytosine deaminase ("CD"), in combination with the prodrug, 5-fluorocytosine, to effect killing of tumor cells. The method, antibody-enzyme conjugates, prodrugs, pharmaceutical compositions and combinations of this invention provide for enhanced selective killing of tumor cells and are thus useful in the treatment of cancers and other tumors.
摘要:
Phosphate derivatives of 4'-demethylepipodophyllotoxin glucosides are novel antitumor agents and the salts thereof offer the pharmaceutical advantage of high water solubility.
摘要:
Phosphate derivatives of 4'-demethylepipodophyllotoxin glucosides are novel antitumor agents and the salts thereof offer the pharmaceutical advantage of high water solubility.
摘要:
Phosphate derivatives of 4'-demethylepipodophyllotoxin glucosides are novel antitumor agents and the salts thereof offer the pharmaceutical advantage of high water solubility.
摘要:
Disclosed are azaindazole compounds of Formula (I): or pharmaceutically acceptable salts thereof, wherein: Q is: (i) 5-membered heteroaryl comprising at least one nitrogen heteroatom and substituted with zero to 2 Rg; or (ii) 9- to 10-membered bicyclic heteroaryl selected from Formula (II) and; wherein Ring A is a 5- to 6-membered aryl or heteroaryl fused ring substituted with zero to 2 Rg; and R1, R2, R3, and Rg are defined herein. Also disclosed are methods of using such compounds in the treatment of at least one CYP17 associated condition, such as, for example, cancer, and pharmaceutical compositions comprising such compounds.
摘要:
The present invention relates to novel N12, N13-bridged sugar derivatives of indolylopyrrolocarbazoles and pharmaceutical formulations thereof which exhibit topoisomerase-I activity and are useful in inhibiting the proliferation of tumor cells.
摘要:
The invention provides methods of preparing macrocycles including macrocycle stabilized peptides (MSPs). Macrocycles and MSPs are prepared according to nucleophilic capture of an iminoquinomethide type intermediate generated from a suitably substituted 2-amino-thiazol-5-yl carbinol. The preferred nucleophile may be selected from an electron rich aromatic moiety in the case of macrocycles and, in the case of MSPs, at least one amino acid comprises an electron rich aromatic moiety. In addition, the concept can be extended to other related 5-membered heterocyclic systems in place of the thiazole, such as imidazole or oxazole. The conditions for the generation of the corresponding iminoquinomethide type intermediates may be similar or different than the conditions used for the 2-amino-thiazol-5-yl carbinol.
摘要:
The invention provides compounds of formula I and pharmaceutically acceptable salts thereof.The formula I compounds inhibit tyrosine kinase activity thereby making them useful as anticancer agents and for the treatment of Alzheimer's Disease.
摘要:
The invention provides compounds of formula I and pharmaceutically acceptable salts thereof.The formula I compounds inhibit tyrosine kinase activity thereby making them useful as anticancer agents and for the treatment of Alzheimer's Disease.
摘要:
This invention relates to novel 3'-demethoxy epipodophyllotoxin glucosides, their use as anti-tumor agents, and pharmaceutical compositions thereof.