AUTHOR OF THIS BLOG

DR ANTHONY MELVIN CRASTO, WORLDDRUGTRACKER

FDA approves new drug Venclexta (venetoclax) for chronic lymphocytic leukemia in patients with a specific chromosomal abnormality

 Uncategorized  Comments Off on FDA approves new drug Venclexta (venetoclax) for chronic lymphocytic leukemia in patients with a specific chromosomal abnormality
Apr 122016
 
Venetoclax.svg
Venclexta (venetoclax)
04/11/2016 12:12 PM EDT
The U.S. Food and Drug Administration today approved Venclexta (venetoclax) for the treatment of patients with chronic lymphocytic leukemia (CLL) who have a chromosomal abnormality called 17p deletion and who have been treated with a least one prior therapy. Venclexta is the first FDA-approved treatment that targets the B-cell lymphoma 2 (BCL-2) protein, which supports cancer cell growth and is overexpressed in many patients with CLL.

April 11, 2016

Release

The U.S. Food and Drug Administration today approved Venclexta (venetoclax) for the treatment of patients with chronic lymphocytic leukemia (CLL) who have a chromosomal abnormality called 17p deletion and who have been treated with at least one prior therapy. Venclexta is the first FDA-approved treatment that targets the B-cell lymphoma 2 (BCL-2) protein, which supports cancer cell growth and is overexpressed in many patients with CLL.

According to the National Cancer Institute, CLL is one of the most common types of leukemia in adults, with approximately 15,000 new cases diagnosed each year. CLL is characterized by the progressive accumulation of abnormal lymphocytes, a type of white blood cell. Patients with CLL who have a 17p deletion lack a portion of the chromosome that acts to suppress cancer growth. This chromosomal abnormality occurs in approximately 10 percent of patients with untreated CLL and in approximately 20 percent of patients with relapsed CLL.

“These patients now have a new, targeted therapy that inhibits a protein involved in keeping tumor cells alive,” said Richard Pazdur, director of the Office of Hematology and Oncology Products in the FDA’s Center for Drug Evaluation and Research. “For certain patients with CLL who have not had favorable outcomes with other therapies, Venclexta may provide a new option for their specific condition.”

The efficacy of Venclexta was tested in a single-arm clinical trial of 106 patients with CLL who have a 17p deletion and who had received at least one prior therapy. Trial participants took Venclexta orally every day, beginning with 20 mg and increasing over a five-week period to 400 mg. Results showed that 80 percent of trial participants experienced a complete or partial remission of their cancer.

Venclexta is indicated for daily use after detection of 17p deletion is confirmed through the use of the FDA-approved companion diagnostic Vysis CLL FISH probe kit.

The most common side effects of Venclexta include low white blood cell count (neutropenia), diarrhea, nausea, anemia, upper respiratory tract infection, low platelet count (thrombocytopenia) and fatigue. Serious complications can include pneumonia, neutropenia with fever, fever, autoimmune hemolytic anemia, anemia and metabolic abnormalities known as tumor lysis syndrome. Live attenuated vaccines should not be given to patients taking Venclexta.

The FDA granted the Venclexta application breakthrough therapy designation, priority review status, and accelerated approval for this indication. These are distinct programs intended to facilitate and expedite the development and review of certain new drugs in light of their potential to benefit patients with serious or life-threatening conditions. Venclexta also received orphan drug designation, which provides incentives such as tax credits, user fee waivers and eligibility for exclusivity to assist and encourage the development of drugs for rare diseases.

Venclexta is manufactured by AbbVie Inc. of North Chicago, Illinois, and marketed by AbbVie and Genentech USA Inc. of South San Francisco, California. The Vysis CLL FISH probe kit is manufactured by Abbott Molecular of Des Plaines, Illinois.

///FDA,  approves,  new drug, chronic lymphocytic leukemia,  specific chromosomal abnormality, Venclexta, venetoclax,  fda 2016
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GDC 0853

 cancer, phase 1, Uncategorized  Comments Off on GDC 0853
Mar 252016
 

str1

 

.

Picture credit….

GDC 0853

GDC-0853; RG 7845

Molecular Formula: C37H44N8O4
Molecular Weight: 664.79646 g/mol

2-[3-(hydroxymethyl)-4-[1-methyl-5-[(7-methyl-6,8-dihydro-5H-[1,2,4]triazolo[1,5-a]pyrazin-2-yl)amino]-6-oxo-3-pyridyl]-2-pyridyl]-3,4,6,7,8,9-hexahydropyrazino[1,2-a]indol-1-one

3-[3-(hydroxymethyl)-4-[1-methyl-5-[[5-[2-methyl-4-(oxetan-3-yl)piperazin-1-yl]pyridin-2-yl]amino]-6-oxopyridin-3-yl]pyridin-2-yl]-7,7-dimethyl-1,2,6,8-tetrahydrocyclopenta[3,4]pyrrolo[3,5-b]pyrazin-4-one

3-[3-(hydroxymethyl)-4-[5-[[5-[(2S)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]-2-pyridyl]amino]-6-oxo-1H-pyridin-3-yl]-2-pyridyl]-7,7-dimethyl-1,2,6,8-tetrahydrocyclopenta[3,4]pyrrolo[3,5-b]pyrazin-4-one

2H-​Cyclopenta[4,​5]​pyrrolo[1,​2-​a]​pyrazin-​1(6H)​-​one, 2-​[1,​6-​dihydro-​3′-​(hydroxymethyl)​-​1-​methyl-​5-​[[5-​[(2S)​-​2-​methyl-​4-​(3-​oxetanyl)​-​1-​piperazinyl]​-​2-​pyridinyl]​amino]​-​6-​oxo[3,​4′-​bipyridin]​-​2′-​yl]​-​3,​4,​7,​8-​tetrahydro-​7,​7-​dimethyl-

s ISoMER 1434048-34-6

r iSoMER 1434048-57-3

Phase 1

Patients with Patients with Resistant B-Cell Lymphoma or Chronic Lymphocytic Leukemia..

‘s Btk inhibitor

https://clinicaltrials.gov/ct2/show/NCT01991184

Bruton tyrosine kinase inhibitor

  • 01 Sep 2015 Phase-I clinical trials in Autoimmune disorders (In volunteers) in USA (PO, Capsule and Tablet) (NCT02699710)
  • 16 Oct 2014 Discontinued – Phase-I for Non-Hodgkin’s lymphoma (Second-line therapy or greater) in USA (unspecified route)
  • 16 Oct 2014 Discontinued – Phase-I for Chronic lymphocytic leukaemia (Second-line therapy or greater) in USA (unspecified route)

SCHEMBL14912984.png

BTK inhibitor GDC-0853 An orally available inhibitor of Bruton’s tyrosine kinase (BTK) with potential antineoplastic activity. Upon administration, GDC-0853 inhibits the activity of BTK and prevents the activation of the B-cell antigen receptor (BCR) signaling pathway. This prevents both B-cell activation and BTK-mediated activation of downstream survival pathways, which leads to the inhibition of the growth of malignant B-cells that overexpress BTK. BTK, a member of the Src-related BTK/Tec family of cytoplasmic tyrosine kinases, is overexpressed in B-cell malignancies; it plays an important role in B-lymphocyte development, activation, signaling, proliferation and survival.

Patent

WO 2013067274

https://www.google.co.in/patents/WO2013067274A1?cl=en

part

Example 271a (S)-tert-Butyl 4-(6-(5-Chloro-2-methoxypyridin-3-ylamino)pyridin-3-yl)-3-methylpiperazine-1-carboxylate 271a

Image loading...

A 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 1,4-dioxane (40 mL), (S)-tert-butyl 4-(6-amino pyridin-3-yl)-3-methylpiperazine-1-carboxylate 101h (2.04 g, 7.0 mmol), 3-bromo-5-chloro-2-methoxypyridine (2.8 g, 12.6 mmol), Pd2(dba)3 (640 mg, 0.70 mmol), XantPhos (404.6 mg, 0.70 mmol), and cesium carbonate (4.56 g, 14.0 mmol). After three cycles of vacuum/argon flush, the mixture was heated at 100 °C for 4 h. After this time the reaction was cooled to room temperature. It was then filtered and the filtrate was evaporated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with 1:3 ethyl acetate/petroleum ether to afford 271a (1.7 g, 57%) as a yellow solid. MS-ESI: [M+H]+ 434.2

Example 271btert-Butyl (3S)-4-(6-{[5-(2-{4,4-Dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}-3-(hydroxymethyl)pyridin-4-yl)-2-methoxypyridin-3-yl] amino}pyridin-3-yl)-3-methylpiperazine-1-carboxylate 271b

A 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 271a (650 mg, 1.50 mmol), {3-[(acetyloxy)methyl]-2-{4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}pyridin-4-yl}boronic acid 199e (1.79 g, 4.5 mmol), Pd2(dba)3 (137.2 mg, 0.15 mmol), P(cy)3(167.4 mg, 0.60 mmol), Cs2CO3 (978 mg, 3.0 mmol), dioxane (20 mL), and water (0.5 mL). After three cycles of vacuum/argon flush, the mixture was heated at 110°C for 16 h. After this time the reaction was cooled to room temperature. Lithium hydroxide monohydrate (1.89 g, 45 mmol) and water (2.0 mL) were added. The resulting mixture was stirred at 45°C for 4 h. It was then filtered and the filtrate was evaporated under reduced pressure. The residue was purified by silica-gel column chromatography eluting with 3:1 ethyl acetate/petroleum ether to afford 271b (290 mg, 27%) as a yellow solid. MS-ESI: [M+H]+ 709.3

Example 271c 10-[3-(Hydroxymethyl)-4-[5-({5-[(2S)-2-methylpiperazin-1-yl]pyridin-2-yl}amino)-6-oxo-1,6-dihydropyridin-3-yl]pyridin-2-yl]-4,4-dimethyl-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-9-one 271c

A solution of 271b (286.6 mg, 0.40 mmol) in dioxane/HCl (30 mL) was stirred at 50 °C for 2 h. It was evaporated under reduced pressure to afford 271c (450 mg, crude) as a black solid. MS-ESI: [M+H]+ 595.3

Example 271 3-[3-(hydroxymethyl)-4-[5-[[5-[(2S)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]-2-pyridyl]amino]-6-oxo-1H-pyridin-3-yl]-2-pyridyl]-7,7-dimethyl-1,2,6,8-tetrahydrocyclopenta[3,4]pyrrolo[3,5-b]pyrazin-4-one 271

To a solution of 271c (450 mg, 0.75 mmol) in methanol (10 mL) was added oxetan-3-one (162 mg, 2.25 mmol), NaBH3CN (141.8 mg, 2.25 mmol), and ZnCl2 (306 mg, 2.25 mmol). The reaction was stirred at room temperature for 3 h. The mixture was evaporated under reduced pressure and the residue was diluted with water (5 mL). It was then extracted with dichloromethane (3 X 10 mL) and the combined dichloromethane extract was concentrated under reduced pressure. The residue was purified by reverse-phase prep-HPLC to afford 271 (23.0 mg, 8.8%, over two steps) as a yellow solid. MS-ESI: [M+H]+651.3. 1H NMR (500 MHz, CDCl3) δ 9.76 (s, 1H), 8.74 (d, J = 2.0 Hz, 1H), 8.53 (d, J = 5.0 Hz, 1H), 7.99 (d, J = 3.0 Hz, 1H), 7.84 (s, 1H), 7.73 (s, 1H), 7.41 (d, J = 4.5 Hz, 1H), 7.35 (dd, J = 2.5 Hz, 8.5 Hz, 1H), 6.87 (s, 1H), 6.85 (d, J = 9.0 Hz, 1H), 5.16-5.13 (m, 1H), 4.72-4.69 (m, 5H), 4.54-4.53 (m, 1H), 4.36-4.35 (m, 1H), 4.19-4.17 (m, 2H), 3.89-3.87 (m, 1H), 3.56-3.49 (m, 2H), 3.11-3.09 (m, 2H), 2.60-2.48 (m, overlap, 7H), 2.24-2.21 (m, 1H), 1.29 (s, 6H), 1.02 (d, J = 6.0 Hz, 3H)

Image loading...271

 

 

………………………..

syn of 191 j

is intermediateImage loading...not product, is acid

To a mixture of 4-chloro-2-{4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}pyridine-3-carbaldehyde 108a (500 mg, 1.46 mmol), tert-butyl alcohol (20 mL), and dichloromethane (5 mL) was added 2-methyl-2-butene (3066 mg, 43.8 mmol). An aqueous solution (8 mL) of NaClO2 (263 mg, 2.92 mmol) and NaH2PO4·2water (683 mg, 4.38 mmol) was added dropwise at -10°C and the reaction mixture was stirred at -10 °C for overnight. It was concentrated under reduced pressure and the residue was extracted with ethyl acetate (4 × 20 mL). The combined organic extract was dried over MgSO4 and concentrated. The residue was purified with reverse-phase prep-HPLC to afford 210a (315 mg, 60%) as a pale yellow solid. MS-ESI: [M+H]+ 360.1

Example 210b 2-{4,4-Dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl} -4-[1-methyl-5-({5-[(2S)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]pyridin-2-yl}amino)-6-oxo-1,6-dihydropyridin-3-yl]pyridine-3-carboxylic Acid 210b

A 25-mL round-bottomed flask equipped with a reflux condenser was charged with 210a (400 mg, 1.1 mmol), (S)-1-methyl-3-(5-(2-methyl-4-(oxetan-3-yl)piperazin-1-yl)pyridin-2-ylamino)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one 191j (536 mg, 1.1 mmol), PdCl2(dppf) (81 mg, 0.11 mmol), K3PO4 (466 mg, 2.2 mmol), sodium acetate (216 mg, 2.2 mmol), acetonitrile (10 mL), and water (0.2 mL). After three cycles of vacuum/argon flush, the mixture was heated at 100°C for 3 h. It was then filtered and the filtrate was evaporated in vacuo. The residue was purified by silica-gel column chromatography eluting with 1:3 petroleum/ethyl acetate to afford 210b as a yellow solid (306 mg, 41%). MS-ESI: [M+H]+ 679.3

construction, use your discretion

Example 130a (3S)-tert- utyl 3-methyl-4-(6-nitropyridin-3-yl)piperazine-l-carboxylate 130a

130a

Following the procedures as described for compound lOlg, reaction of 5-bromo-2-nitropyridine (10.5 g, 50 mmol), and (JS)-tert-butyl-3 -methylpiperazine- 1 -carboxylate (10.0 g, 50 mmol) afforded 130a as a yellow solid (8.05 g, 50%). LCMS: [M+H]+ 323

Example 130b (3 S)-tert-butyl-4-(6-aminopyridin-3 -yl)-3 -methylpiperazine- 1 -carboxylate 130b

130b

Following the procedures as described for compound lOlh, hydrogenation of 130a (5.8 g) afforded 130bas a brown solid (4.9 g, 96%). LCMS: [M+H]+ 293

Example 130c (3 S)-tert-Butyl-4-(6-(5 -bromo- 1 -methyl -2 -oxo- 1,2-dihydropyridin-3 -yl amino) pyridine-3 -yl)-3 -methylpiperazine- 1 -carboxylate 130c

N

Following the procedures as described for compound lOli, reaction of 130b (4.0 g) and 3,5-dibromo-l-methylpyridin-2(lH)-one (5.5 g) afforded 130c as a yellow solid (5.4 g, 83%). LCMS: [M+H]+ 478

Example 130d (3 S)-5 -Bromo- 1 -methyl-3 -(5 -(2-methylpiperazin- 1 -yl)pyridin- 2-ylamino)pyridine-2(lH)-one 130d

Following the procedures as described for compound lOlj, acidic hydrolysis of the Boc group of 130c (3.1 g) afforded 130d as a yellow solid (2.3 g, 95%). LCMS: [M+H]+ 380.

Example 130e (3 S)-5 -Bromo- 1 -methyl-3 -(5 -(2 -methyl-4-(ox etan-3-yl)piperazin-l-yl) pyridine -2-ylamino)pyridin-2(lH)-one 130e

Following the procedures as described for compound 101k, reductive amination of 130d (2.35 g) with oxetan-3-one (0.4 mL) afforded 130e as a yellow solid (2.6 g, 98%). LCMS: [M+H]+ 434.

Example 13 Of (3S)-l-methyl-3-(5-(2-methyl-4-(oxetan-3-yl)piperazin-l-yl)pyridin-2-ylamino) -5-(4,4,5,5-tetramethyl-l,3,2-dioxaborolan-2-yl)pyridin-2(lH)-one 130f

check pyridine ring position

A 100 mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with 130e (1.0 g, 1.0 eq., 2.3 mmol), Pin2B2 (1.46 g, 2.50 eq., 5.75 mmol), Pd2(dba)3 (105 mg, 0.05 eq., 0.125 mmol), X-Phos (93 mg, 0.1 eq., 0.23 mmol), AcOK (676 mg, 3.0 eq., 6.9 mmol), and dioxane (50 mL). After three cycles of vacuum/argon flush, the mixture was heated at 90 °C for 4 hrs, then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the resulting residue was washed with 3: 1 PE/EA (80 mL) to afford 130f as yellow solid (1.0 g, 90%). MS: [M+H]+ 482.

 

check pyridine ring position, use your discretion

Example 191h ( 3S)-5 -Bromo- 1 -methyl-3 -(5 -(2-methylpiperazin- 1 -yl)pyridin- -ylamino)pyridine-2(lH)-one 191h

Following the procedure described for compound lOlj and starting with (3S)-tert-butyl 4-(6-(5 -bromo- 1 -methyl-2-oxo- 1 ,2-dihydropyridin-3 -ylamino)pyridine-3 -yl)-3 -methyl-piperazine-l-carboxylate 191g (3.1 g, 6.5 mmol) afforded 191h as a yellow solid (2.3 g, 94%). MS-ESI: [M+H]+ 378.

Example 1 1 i (S)-5 -Bromo- 1 -methyl-3-(5-(2-methyl-4-(oxetan-3-yl)piperazin- 1 -yl)pyridin-2-ylamino)pyridin-2(lH)-one 191i

A mixture of (5)-5-bromo-l-methyl-3-(5-(2-methylpiperazin-l-yl)pyridin-2-ylamino)pyridin-2(lH)-one 191h (40.0 g, 106 mmol), oxetan-3-one (1 1.4 g, 159 mmol), NaBH3CN (10.0 g, 159 mmol), and zinc chloride (21.3 g, 159 mmol) in methanol (700 mL) was stirred at 50°C for 5 hours. The mixture was added to water (100 mL) and concentrated under reduced pressure. The residue was extracted with dichloromethane (200 mL x 3). The combined organic layer was concentrated under reduced pressure and the residue was purified by silica-gel column chromatography eluting with 40: 1 dichloromethane /methanol to afford 191i (35 g, 73%). MS: [M+H]+ 434.

Example 191j (J5)-l-Methyl-3-(5-(2-methyl-4-(oxetan-3-yl)piperazin-l-yl)-pyridin- -ylamino) -5-(4,4,5,5-tetramethyl-l ,3,2-dioxaborolan-2-yl)pyridin-2(lH)-one 191j

191 i 191j

A 100-mL single-neck round-bottomed flask equipped with a magnetic stirrer and a reflux condenser was charged with (5)-tert-butyl-4-(6-(5-bromo-l-methyl-2-oxo-l ,2-dihydropyridin-3-ylamino)pyridine-3-yl)-3-methylpiperazine-l-carboxylate 191i (1.0 g, 1.0 eq., 2.3 mmol), Pin2B2 (1.46 g, 2.50 eq., 5.75 mmol), Pd2(dba)3 (105 mg, 0.05 eq., 0.125 mmol), X-Phos (93 mg, 0.1 eq., 0.23 mmol), potassium acetate (676 mg, 3.0 eq., 6.9 mmol), and dioxane (50 mL). After three cycles of vacuum/argon flush, the mixture was heated at 90°C for 4 h. It was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the resulting residue was washed with 3 : 1 petroleum ether/ethyl acetate (80 mL) to afford 191j as yellow solid (1.0 g, 90%). MS: [M+H]+ 482.

 

 

pipeline

http://www.gene.com/medical-professionals/pipeline

Pictrelisib, GDC-0941, RG7321 and GNE0941

Patent ID Date Patent Title
US8921353 2014-12-30 Heteroaryl pyridone and aza-pyridone compounds
US2014378432 2014-12-25 HETEROARYL PYRIDONE AND AZA-PYRIDONE COMPOUNDS
US8716274 2014-05-06 Heteroaryl pyridone and aza-pyridone compounds

//////GDC 0853, Btk inhibitor, phase 1, Patients with Resistant B-Cell Lymphoma,  Chronic Lymphocytic Leukemia, Bruton tyrosine kinase inhibitor,  GDC-0853,  RG 7845, 1434048-34-6

N1(CCN(CC1C)C2COC2)c3cnc(cc3)NC=4C(N(\C=C(/C=4)c5c(c(ncc5)N6CCn7c(C6=O)cc8CC(Cc78)(C)C)CO)C)=O

CC1CN(CCN1C2=CN=C(C=C2)NC3=CC(=CN(C3=O)C)C4=C(C(=NC=C4)N5CCN6C7=C(CC(C7)(C)C)C=C6C5=O)CO)C8COC8

 

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