Chondropsin-class antitumor V-atpase inhibitor compounds, compositions and methods of use thereof

1. A method of inhibiting vacuolar-type (H+)-ATPase in a patient in need thereof, the method comprising administering to the patient a vacuolar-type (H+)-ATPase-inhibiting effective amount of at least one compound of the formula:

wherein:

R 1 is H, a straight-chain or branched C 1-30 saturated alkyl, a straight-chain or branched C 2-30 unsaturated alkyl, or an aryl comprising 6-10 carbon atoms in the ring skeleton thereof, wherein R 1 is unsubstituted or substituted with one or more substituents, which are the same or different, selected from the group consisting of a halogen, an oxo, OR 1a , CO 2 R 1a , and OC(O)R 1a , wherein R 1a is H, a straight-chain or branched C 1-30 saturated alkyl, a straight-chain or branched C 2-30 unsaturated alkyl, or an aryl comprising 6-10 carbon atoms in the ring skeleton thereof;

R 2 -R 8 are the same or different and each is R 10 , C(O)R 10 , SO 3 R 10 , or SO 2 R 10 , wherein R 10 is H, a straight-chain or branched C 1-30 saturated alkyl, a straight-chain or branched C 2-30 unsaturated alkyl, or an aryl comprising 6-10 carbon atoms in the ring skeleton thereof, wherein R 10 is unsubstituted or substituted with one or more substituents, which are the same or different, selected from the group consisting of a halogen, an oxo, OR 10a , CO 2 R 10a and OC(O)R 10a , wherein R 10a is H, a straight-chain or branched C 1-30 saturated alkyl, a straight-chain or branched C 2-30 unsaturated alkyl, or an aryl comprising 6-10 carbon atoms in the ring skeleton thereof; and

R 9 is a substituent of the formula:

wherein the R 9a substituents are the same or different and each is R 11 , C(O)R 11 , or SO 2 R 11 , wherein R 11 is H, a straight-chain or branched C 1-30 saturated alkyl, a straight-chain or branched C 2-30 unsaturated alkyl, or an aryl comprising 6-10 carbon atoms in the ring skeleton thereof, wherein R 11 is unsubstituted or substituted with one or more substituents, which are the same or different, selected from the group consisting of a halogen, an oxo, OR 11a , CO 2 R 11a and OC(O)R 11a , wherein R 11a is H, a straight-chain or branched C 1-30 saturated alkyl, a straight-chain or branched C 2-30 unsaturated alkyl, or an aryl comprising 6-10 carbon atoms in the ring skeleton thereof;

wherein R 1a , R 10a and R 11a are unsubstituted or substituted with one or more substituents selected from the group consisting of a halogen, an oxo, and a hydroxyl; or a pharmaceutically acceptable salt thereof,

whereupon vacuolar-type (H+)-ATPase in the patient is inhibited.

2. The method of claim 1 , wherein:

R 1 is H or a straight-chain or branched C 1-30 saturated alkyl;

R 2 -R 8 are the same or different and each is R 10 , wherein R 10 is H or a straight-chain or branched C 1-30 saturated alkyl; and

the R 9a substituents are the same or different and each is R 11 , wherein R 11 is H or a straight-chain or branched C 1-30 saturated alkyl;

or a pharmaceutically acceptable salt thereof,

whereupon vacuolar-type (H+)-ATPase in the patient is inhibited.

3. The method of claim 2 , wherein:

R 1 is H or a straight-chain or branched C 1-6 saturated alkyl;

R 2 -R 8 are the same or different and each is R 10 , wherein R 10 is H or a straight-chain or branched C 1-6 saturated alkyl; and

the R 9a substituents are the same or different and each is R 11 , wherein R 11 is H or a straight-chain or branched C 1-6 saturated alkyl;

or a pharmaceutically acceptable salt thereof,

whereupon vacuolar-type (H+)-ATPase in the patient is inhibited.

4. The method of claim 1 , wherein:

the compound is a compound of the formula:

or a pharmaceutically acceptable salt thereof,

whereupon vacuolar-type (H+)-ATPase in the patient is inhibited.

5. The method of claim 4 , wherein:

the compound is a compound of the formula:

or a pharmaceutically acceptable salt thereof,

whereupon vacuolar-type (H+)-ATPase in the patient is inhibited.

6. The method of claim 1 , wherein the patient is affected by a condition treatable by inhibition of vacuolar-type (H+)-ATPase.

7. The method of claim 6 , wherein the condition is selected from the group consisting of osteoporosis, Alzheimer's disease, glaucoma, fertility, abnormal urinary acidification, abnormal secretion of degradative enzymes, fungal infection and cancer.

8. The method of claim 6 , wherein the vacuolar-type (H+)-ATPase inhibiting-effective amount is effective to inhibit one or more conditions selected from the group consisting of intra-organellar acidification of intracellular organelles, urinary acidification, bone resorption, fertility, drug-resistance of tumor cells, tumor cell proliferation, cellular invasiveness, angiogenesis, and metastasis.

9. The method of claim 6 , wherein the method further comprises administering a vacuolar-type (H+)-ATPase inhibiting-effective amount of at least one additional compound other than a compound of formula (I), which inhibits vacuolar-type (H+)-ATPase, wherein the at least one additional compound is salicylihalamide.