Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2001-09-18
2002-06-04
Kifle, Bruck (Department: 1624)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C540S456000
Reexamination Certificate
active
06399625
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to 1-oxorapamycins, which are useful in inducing immunosuppression, as a neurotrophic agent, and in the treatment of transplantation rejection, autoimmune diseases, solid tumors, fungal infections, and vascular disease.
Rapamycin is a macrocyclic triene antibiotic produced by
Streptomyces hygroscopius,
which was found to have antifungal activity, particularly against
Candida albicans,
both in vitro and in vivo [C. Vezina et al., J. Antibiot. 28, 721 (1975); S. N. Sehgal et al., J. Antibiot. 28, 727 (1975); H. A. Baker et al., J. Antibiot. 31, 539 (1978); U.S. Pat. Nos. 3,929,992; and 3,993,749]. Additionally, rapamycin alone (U.S. Pat. No. 4,885,171) or in combination with picibanil (U.S. Pat. No. 4,401,653) has been shown to have antitumor activity.
The immunosuppressive effects of rapamycin have been disclosed in FASEB 3, 3411 (1989). Cyclosporin A and FK-506, other macrocyclic molecules, also have been shown to be effective as immunosuppressive agents, therefore useful in preventing transplant rejection [FASEB 3, 3411 (1989); FASEB 3, 5256 (1989); R. Y. Calne et al., Lancet 1183 (1978); and U.S. Pat. No. 5,100,899]. R. Martel et al. [Can. J. Physiol. Pharmacol. 55, 48 (1977)] disclosed that rapamycin is effective in the experimental allergic encephatomyelitis model, a model for multiple sclerosis; in the adjuvant arthritis model, a model for rheumatoid arthritis; and effectively inhibited the formation of lgE-like antibodies.
Rapamycin is also useful in preventing or treating systemic lupus erythematosus [U.S. Pat. No. 5,078,999], pulmonary inflammation [U.S. Pat. No. 5,080,899], insulin dependent diabetes mellitus [U.S. Pat. No. 5,321,009], skin disorders, such as psoriasis [U.S. Pat. No. 5,286,730], bowel disorders [U.S. Pat. No. 5,286,731], smooth muscle cell proliferation and intimal thickening following vascular injury [U.S. Pat. Nos. 5,288,711 and 5,516,781], adult T-cell leukemia/lymphoma [European Patent Application 525,960 A1], ocular inflammation [U.S. Pat. No. 5,387,589], malignant carcinomas [U.S. Pat. No. 5,206,018], cardiac inflammatory disease [U.S. Pat. No. 5,496,832], and anemia [U.S. Pat. No. 5,561,138].
A rapamycin ester, rapamycin 42-ester with 3-hydroxy-2-(hydroxymethyl)-2-methylpropionic acid [disclosed in U.S. Pat. No. 5,362,718], also known as CCI-779, has been shown to have antitumor activity against a variety of tumor cell lines, in in vivo animal tumor models, and in Phase I clinical trials. [Gibbons, J., Proc. Am. Assoc. Can. Res. 40: 301 (1999); Geoerger, B., Proc. Am. Assoc. Can. Res. 40: 603 (1999); Alexandre, J., Proc. Am. Assoc. Can. Res. 40: 613 (1999); and Alexandre, J., Clin. Cancer. Res. 5 (November Supp.): Abstr. 7 (1999)].
DESCRIPTION OF THE INVENTION
This invention provides 1-oxorapamycins, and methods of using them that are described herein. As defined herein, the term “a 1-oxorapamycin” defines a class of immunosuppressive compounds which contain the basic 1-oxorapamycin nucleus (shown below). The 1-oxorapamycins of this invention include compounds which may be chemically or biologically modified as derivatives of the 1-oxorapamycin nucleus, while still retaining immunosuppressive properties. Accordingly, the term “a 1-oxorapamycin” includes esters, ethers, oximes, hydrazones, and hydroxylamines of rapamycin, as well as rapamycins in which functional groups on the rapamycin nucleus have been modified, for example through reduction or oxidation. The term “a 1-oxorapamycin” also includes pharmaceutically acceptable salts of 1-oxorapamycins, which are capable of forming such salts, either by virtue of containing an acidic or basic moiety.
It is preferred that the esters and ethers of 1-oxorapamycin are of the hydroxyl groups at the 42- and/or 31-positions of the 1-oxorapamycin nucleus, esters and ethers of a hydroxyl group at the 27-position (following chemical reduction of the 27-ketone), and that the oximes, hydrazones, and hydroxylamines are of a ketone at the 42-position (following oxidation of the 42-hydroxyl group) and of 27-ketone of the 1-oxorapamycin nucleus.
Preferred 42- and/or 31-esters and ethers of rapamycin are disclosed in the following patents, which are all hereby incorporated by reference: alkyl esters (U.S. Pat. No. 4,316,885); aminoalkyl esters (U.S. Pat. No. 4,650,803); fluorinated esters (U.S. Pat. No. 5,100,883); amide esters (U.S. Pat. No. 5,118,677); carbamate esters (U.S. Pat. No. 5,118,678); silyl ethers (U.S. Pat. No. 5,120,842); aminoesters (U.S. Pat. No. 5,130,307); acetals (U.S. Pat. No. 5,51,413); aminodiesters (U.S. Pat. No. 5,162,333); sulfonate and sulfate esters (U.S. Pat. No. 5,177,203); esters (U.S. Pat. No. 5,221,670); alkoxyesters (U.S. Pat. No. 5,233,036); O-aryl, -alkyl, -alkenyl, and -alkynyl ethers (U.S. Pat. No. 5,258,389); carbonate esters (U.S. Pat. No. 5,260,300); arylcarbonyl and alkoxycarbonyl carbamates (U.S. Pat. No. 5,262,423); carbamates (U.S. Pat. No. 5,302,584); hydroxyesters (U.S. Pat. No. 5,362,718); hindered esters (U.S. Pat. No. 5,385,908); heterocyclic esters (U.S. Pat. No. 5,385,909); gem-disubstituted esters (U.S. Pat. No. 5,385,910); amino alkanoic esters (U.S. Pat. No. 5,389,639); phosphorylcarbamate esters (U.S. Pat. No. 5,391,730); carbamate esters (U.S. Pat. No. 5,411,967); carbamate esters (U.S. Pat. No. 5,434,260); amidino carbamate esters (U.S. Pat. No. 5,463,048); carbamate esters (U.S. Pat. No. 5,480,988); carbamate esters (U.S. Pat. No. 5,480,989); carbamate esters (U.S. Pat. No. 5,489,680); hindered N-oxide esters (U.S. Pat. No. 5,491,231); biotin esters (U.S. Pat. No. 5,504,091); O-alkyl ethers (U.S. Pat. No. 5,665,772); and PEG esters of rapamycin (U.S. Pat. No. 5,780,462). The preparation of these esters and ethers are disclosed in the patents listed above. The preparation of the corresponding esters and ethers of 1-oxorapamycin can be accomplished using the methodology described in these patents, starting with 1-oxorapamycin.
Preferred 27-esters and ethers of rapamycin are disclosed in U.S. Pat. No. 5,256,790, which is hereby incorporated by reference. The preparation of these esters and ethers are disclosed in the patents listed above. The preparation of the corresponding esters and ethers of 1-oxorapamycin can be accomplished using the methodology described in these patents, starting with 1-oxorapamycin.
Preferred oximes, hydrazones, and hydroxylamines of rapamycin are disclosed in U.S. Pat. Nos. 5,373,014, 5,378,836, 5,023,264, and 5,563,145, which are hereby incorporated by reference. The preparation of these oximes, hydrazones, and hydroxylamines are disclosed in the above listed patents. The preparation of 42-oxorapamycin is disclosed in U.S. Pat. No. 5,023,263, which is hereby incorporated by reference. The preparation of the corresponding oximes, hydrazones, and hydroxylamines of 1-oxorapamycin can be accomplished using the methodology described in these patents, starting with 1-oxorapamycin.
Particularly preferred 1-oxorapamycins include 1-oxorapamycin, 1-oxorapamycin 42-ester with 3-hydroxy-2-(hydroxymethyl)-2-methylpropionic acid [see U.S. Pat. No. 5,362,718 for the preparation of rapamycin 42-ester with 3-hydroxy-2-(hydroxymethyl)-2-methylpropionic acid], and 42-O-(2-hydroxy)ethyl 1-oxorapamycin [see U.S. Pat. No. 5,665,772 for the preparation of 42-O-(2-hydroxy)ethyl rapamycin].
When applicable, pharmaceutically acceptable salts can be formed from organic and inorganic acids, for example, acetic, propionic, lactic, citric, tartaric, succinic, fumaric, maleic, malonic, mandelic, malic, phthalic, hydrochloric, hydrobromic, phosphoric, nitric, sulfuric, methanesulfonic, napthalenesulfonic, benzenesulfonic, toluenesulfonic, camphorsulfonic, and similarly known acceptable aids when the rapamycin contains a suitable basic moiety. Salts may also be formed from organic and inorganic bases, such as alkali metal salts (fo
Kifle Bruck
Milowsky Arnold S.
Wyeth
LandOfFree
1-oxorapamycins does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with 1-oxorapamycins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 1-oxorapamycins will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2902116