# US 9,750,728 B2 · Method and pharmaceutical composition for inhibiting PI3K/AKT/mTOR signaling pathway

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- Number: US 9,750,728 B2
- Document ID: US9750728B2
- Status: Granted
- Kind: B2
- Application number: 15/358,728
- Filed: 2016-11-22
- Published: 2017-05-04
- Granted: 2017-09-05
- Earliest claimed: 2012-09-29
- Assignees: Targeted Therapeutics, LLC
- Applicants: Targeted Therapeutics, LLC
- Inventors: Lei Duan; Victor Levenson; GuoGuang Ying
- Web page: https://patentgrep.com/patent/US9750728B2

## CPC

- A61K 31/4436: containing a heterocyclic ring having sulfur as a ring hetero atom
- A61K 31/436: the heterocyclic ring system containing a six-membered ring having oxygen as a ring hetero atom, e.g. rapamycin
- A61K 45/06: Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)

## Abstract

A method of treating a patient in need of treatment for a disease selected from the group consisting of cancer, hamartoma syndrome and hereditary myopathy, the method comprising administering to the patient an effective dose of at least one PRCP and PREP dual antagonist pyridine compound of Formula (I) or an acid salt thereof, which can be administered either alone or in combination with at least one mTOR inhibitor.

## Claims

### Claim 1

A method of treating cancer, the method comprising administering to a patient in need thereof an effective dose of a compound of formula (I)
wherein R1, R2, R3, R4 and R5 are independently from each other any of the following groups:
R1 is selected from the group consisting of hydrogen, methyl, alkyl with 2 to 6 carbon atoms, acetyl, acyl, and —COR, wherein R is an alkyl group with 2 to 6 carbon atoms;
R2 is selected from the group consisting of hydrogen, methyl, alkyl with 2 to 6 carbon atoms, acetyl, acyl, and —COR, wherein R is an alkyl group with 2 to 6 carbon atoms;
R3 is an alkane chain with 4 to 29 carbon atoms;
R4 is selected from the group consisting of hydrogen, methyl, alkyl with 2 to 6 carbon atoms, isopropyl, isobutyl and tert-butyl; and
R5 is selected from the group consisting of hydrogen, methyl, alkyl with 2 to 6 carbon atoms, isopropyl, isobutyl and tert-butyl.

### Claim 2 (depends on 1)

The method of claim 1, wherein the method further comprises administering an effective dose of an mTOR antagonist.

### Claim 3 (depends on 2)

The method of claim 2, wherein the mTOR antagonist is rapamycin.

### Claim 4 (depends on 1)

The method of claim 1, wherein the compound is a compound of formula (I), in which R1 is methyl, R2 is methyl, R3 is an alkane with 8 carbon atoms, and R4 is methyl and R5 is methyl.

### Claim 5 (depends on 1)

The method of claim 1, wherein cancer is selected from the group consisting of lung cancer, pleural mesothelioma, esophageal cancer, gastric cancer, pancreatic cancer, hepatobiliary cancer, small bowel cancer, colon cancer, colorectal cancer, kidney cancer, urinary tract cancer, bladder cancer, prostate cancer, penile cancer, testicular cancer, gynecological cancer, ovarian cancer, breast cancer, endocrine system cancer, skin cancer, CNS cancer, soft tissue sarcoma, osteosarcoma and melanoma, lymphoma, multiple myeloma, Hodgkin's disease, leukemia, plasma cell tumors and AIDS-related cancer.

### Claim 6 (depends on 1)

The method of claim 1, wherein the compound of formula (I) is formulated as an acid salt, wherein the acid is selected from the group consisting of oxalic acid, dicarboxylic acid, HOCO—R—COOH wherein R is an alkane chain with 2 to 8 carbon atoms, acetic acid, carboxylic acid R—COOH wherein R is an alkyl group with 2 to 8 carbon atoms.

### Claim 7 (depends on 6)

The method of claim 6, wherein the compound of formula (I), wherein R1 is methyl, R2 is methyl, R3 is an alkane with 8 carbon atoms, and R4 is methyl and R5 is methyl.

### Claim 8 (depends on 1)

The method of claim 1, wherein the disease is selected from the group consisting of pancreatic cancer and breast cancer.

### Claim 9 (depends on 1)

The method of claim 1, wherein the diseases is metastatic breast cancer.