SUBSTITUTED ARYLAMINE DERIVATIVES AND METHODS OF USE
FIELD OF THE INVENTION
This invention is in the field of pharmaceutical agents and specifically relates to compounds, compositions, uses and methods for treating cancer and angiogenesisrelated disorders.
BACKGROUND OF THE INVENTION
Protein kinases represent a large family of proteins which play a central role in the regulation of a wide variety of cellular processes, maintaining control over cellular function. A partial list of such kinases includes abl, Akt, bcr-abl, Blk, Brk, Btk, c-kit, c-met, c-src, CDK1, CDK2, CDK3, CDK4, CDK5, CDK6, CDK7, CDK8, CDK9,
CDK10, cRafl, CSFIR, CSK, EGFR, ErbB2, ErbB3, ErbB4, Erk,
Fak, fes, FGFR1, FGFR2, FGFR3, FGFR4, FGFR5, Fgr, flt-1,
Fps, Frk, Fyn, Hck, IGF-1R, INS-R, Jak, KDR, Lck, Lyn, MEK, p38, PDGFR, PIK, PKC, PYK2, ros, tie, tie2, TRK, Yes, and
Zap70. Inhibition of such kinases has become an important therapeutic target.
Certain diseases are known to be associated with deregulated angiogenesis, for example ocular neovascularisation, such as retinopathies (including diabetic retinopathy), age-related macular degeneration, psoriasis, hemangioblastoma, hemangioma, arteriosclerosis, inflammatory disease, such as a rheumatoid or rheumatic inflammatory disease, especially arthritis (including rheumatoid arthritis), or other chronic inflammatory disorders, such as chronic asthma, arterial or post transplantational atherosclerosis, endometriosis, and neoplastic diseases, for example so-called solid tumors and liquid tumors (such as leukemias).
At the center of the network regulating the growth and differentiation of the vascular system and its components, both during embryonic development and normal growth, and in a wide number of pathological anomalies and diseases, lies the angiogenic factor known as Vascular Endothelial Growth
Factor" (VEGF ; originally termed'Vascular Permeability
Factor", VPF), along with its cellular receptors (see G.
Breier et al., Trends in Cell Biology, 6,454-6 (1996)).
VEGF is a dimeric, disulfide-linked 46-kDa glycoprotein related to"Platelet-Derived Growth Factor" (PDGF); it is produced by normal cell lines and tumor cell lines; is an endothelial cell-specific mitogen ; shows angiogenic activity in in vivo test systems (e. g. rabbit cornea); is chemotactic for endothelial cells and monocytes; and induces plasminogen activators in endothelial cells, which are involved in the proteolytic degradation of extracellular matrix during the formation of capillaries. A number of isoforms of VEGF are known, which show comparable biological activity, but differ in the type of cells that secrete them and in their heparin-binding capacity. In addition, there are other members of the VEGF family, such as"Placenta Growth Factor" (P1GF) and VEGF-C.
VEGF receptors (VEGFR) are transmembranous receptor tyrosine kinases. They are characterized by an extracellular domain with seven immunoglobulin-like domains and an intracellular tyrosine kinase domain. Various types of VEGF receptor are known, e. g. VEGFR-1 (also known as flt-1),
VEGFR-2 (also known as KDR), and VEGFR-3.
A large number of human tumors, especially gliomas and carcinomas, express high levels of VEGF and its receptors.
This has led to the hypothesis that the VEGF released by tumor cells stimulates the growth of blood capillaries and the proliferation of tumor endothelium in a paracrine manner and through the improved blood supply, accelerate tumor growth. Increased VEGF expression could explain the occurrence of cerebral edema in patients with glioma. Direct evidence of the role of VEGF as a tumor angiogenesis factor in vivo is shown in studies in which VEGF expression or VEGF activity was inhibited. This was achieved with anti-VEGF antibodies, with dominant-negative VEGFR-2 mutants which inhibited signal transduction, and with antisense-VEGF RNA techniques. All approaches led to a reduction in the growth of glioma cell lines or other tumor cell lines in vivo as a result of inhibited tumor angiogenesis.
Angiogenesis is regarded as an absolute prerequisite for tumors which grow beyond a diameter of about 1-2 mm; up to this limit, oxygen and nutrients may be supplied to the tumor cells by diffusion. Every tumor, regardless of its origin and its cause, is thus dependent on angiogenesis for its growth after it has reached a certain size.
Three principal mechanisms play an important part in the activity of angiogenesis inhibitors against tumors: 1)
Inhibition of the growth of vessels, especially capillaries, into avascular resting tumors, with the result that there is no net tumor growth owing to the balance that is achieved between cell death and proliferation ; 2)
Prevention of the migration of tumor cells owing to the absence of blood flow to and from tumors; and 3) Inhibition of endothelial cell proliferation, thus avoiding the paracrine growth-stimulating effect exerted on the surrounding tissue by the endothelial cells which normally line the vessels. See R. Connell and J. Beebe, Exp. Opin.
Ther. Patents, 11,77-114 (2001).
VEGF's are unique in that they are the only angiogenic growth factors known to contribute to vascular hyperpermeability and the formation of edema. Indeed, vascular hyperpermeability and edema that is associated with the expression or administration of many other growth factors appears to be mediated via VEGF production.
Inflammatory cytokines stimulate VEGF production.
Hypoxia results in a marked upregulation of VEGF in numerous tissues, hence situations involving infarct, occlusion, ischemia, anemia, or circulatory impairment typically invoke
VEGF/VPF-mediated responses. Vascular hyperpermeability, associated edema, altered transendothelial exchange and macromolecular extravasation, which is often accompanied by diapedesis, can result in excessive matrix deposition, aberrant stromal proliferation, fibrosis, etc. Hence, VEGFmediated hyperpermeability can significantly contribute to disorders with these etiologic features. As such, regulators of angiogenesis have become an important therapeutic target.
Schipper US patent 3,226,394, issued Dec. 28,1965, describes anthranilamides as CNS depressants. Japanese patent JP2000256358 describes pyrazole derivatives that block the calcium release-activated calcium channel. EP application 9475000, published 6 October 1999, describes compounds as PGE2 antagonists. PCT publication W096/41795, published 27 December 1996, describes benzamides as vasopressin antagonists. W001/29009 describes aminopyridines as KDR inhibitors. WO01/30745 describes anthranilic acids as CGMP phosphodiesterase inhibitors.
WO00/02851, published 20 Jan 2000 descxribes arylsulfonylamnoaryl amides as guanylate cyclase activators.
W098/45268 describes nicotinamide derivatives as PDE4 inhibitors. W098/24771 describes benzamides as vasopressin antagonists.
US Patent No. 5,532,358, issued July 2,1996, describes the preparation of 2- (cyclopropylamino)-N- (2- methoxy-4-methyl-3-pyridinyl)-3-pyridinecarboxamide as an intermediate for HIV inhibitors. Triazine-substituted amines are described for their aggregating ability (J. Amer.
Chem. Soc., 115, 905-16 (1993). Substituted imidazolines were tested for their antidepressant activity in Ind. J.
Het. Chem., 2,129-32 (1992). N- (4-Pyridyl) anthranilic amides were described in Chem Abstr. 97: 109837 (1981). PCT publication W099/32477, published 1 July 1999, describes anthranilamides as anti-coagulants. US patent 6,140,351 describes anthranilamides as anti-coagulants. PCT publication W099/62885, published 9 December 1999, describes 1- (4-aminophenyl) pyrazoles as antiinflammatories. PCT publication WO00/39111, published 6 July 2000, describes amides as factor Xa inhibitors. PCT publication WO00/39117, published 6 July 2000, describes heteroaromatic amides as factor Xa inhibitors. PCT publication WO00/27819, published 18 May 2000, describes anthranilic acid amides as VEGF inhibitors.
PCT publication WO00/27820 published 18 May 2000, describes N-aryl anthranilic acid amides as VEGF inhibitors. 7-Chloroquinolinylamines are described in
FR2168227 as antiinflammatories. WO01/55114, published 2
Aug. 2001, describes nicotinamides for the treatment of cancer. W001/55115, published 2 Aug. 2001, describes nicotinamides for the treatment of apoptosis. WO01/85715, published 15 November 2001, describes substituted pyridines and pyrimidines as anti-angiogenesis agents. PCT publication W001/85691 published 15 November 2001, describes anthranilic amides as VEGF inhibitors. PCT publication W001/85671 published 15 November 2001, describes anthranyl amides as VEGF inhibitors.
PCT publication WO01/81311 published 1 November 2001, describes anthranilic amides as
VEGF inhibitors. However, compounds of the current invention have not been described as inhibitors of angiogenesis such as for the treatment of cancer.
DESCRIPTION OF THE INVENTION
A class of compounds useful in treating cancer and angiogenesis is defined by Formula I
EMI6.1
wherein each of A1 and A2 is independently C or N; wherein A1-A2 together are part of a ring A selected from 5 or 6-membered heteroaryl, more preferably 5-membered heteroaryl selected from thienyl, oxazolyl, imidazolyl, pyrrolyl, pyrazolyl, isoxazolyl, triazolyl, isothiazolyl, and
6-membered heteroaryl selected from pyridyl, pyrazinyl, pyrimidinyl and pyridazinyl, even more preferably pyridyl or pyrimidinyl, most preferably pyridyl; wherein X is selected from
EMI6.2
preferably
EMI6.3
more preferably-C (0)-NH- ; wherein Z is oxygen or sulfur;
wherein Y is selected from
EMI7.1
preferably selected from
EMI7.2
more preferably-NH-CH2- ; wherein Ra and Rb are independently selected from H, halo, and Cl4-alkyl substituted with R1, or wherein Ra and Rb together form C3-C4 cycloalkyl, preferably H, halo, and -alkyl substituted with R", or wherein Ra and Rb together form C3-C4 cycloalkyl, more preferably H, halo and C1-C2-alkyl, even more preferably H; wherein Rc is C1-C4 alkylenyl, where one of the CH2 groups may be substituted with an oxygen atom or an-NH-, preferably C1-C2 alkylenyl, where one of the CH2 groups may be substituted with an oxygen atom or an-NH-, more preferably -CH2-;
wherein R1 is one or more substituents independently selected from H, halo,-OR7, oxo, -SR7, -CO2R7, -COR7, - CONR7R7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)r7, cycloalkyl, optionally substituted phenylalkylenyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted heteroarylalkylenyl, optionally substituted phenyl, lower alkyl, cyano, lower hydroxyalkyl, lower carboxyalkyl, nitro, lower alkenyl, lower alkynyl, lower aminoalkyl, lower alkylaminoalkyl and lower haloalkyl ;
preferably H, halo,-OR oxo, -SR7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)R7, cycloalkyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted phenyl, Cl-C2- alkyl, cyano, Cl C2-hydroxyalkyl, Cl C3-carboxyalkyl, nitro, C2-C3-alkenyl, Cz-C-alkynyl and Ci-Cz-haloalkyI, more preferably H, halo, -OR7, -SR7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)R7, cycloalkyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted phenyl, C12- alkyl, cyano, Cl2-hydroxyalkyl, C1-3-carboxyalkyl, nitro, C2-3-alkenyl, C2-3-alkynyl and Cl2-haloalkyl, additionally preferred are H, chloro, fluoro, bromo, amino, hydroxy, methyl, ethyl, propyl, trifluoromethyl, methoxy,
ethoxy, trifluoromethoxy, carboxymethyl, unsubstituted or substituted phenyl and unsubstituted or substituted heteroaryl selected from thienyl, furanyl, pyridyl, imidazolyl, and pyrazolyl; wherein R2 is selected from a) substituted or unsubstituted 6-10 membered aryl, b) substituted or unsubstituted 5-6 membered heterocyclyl, c) substituted or unsubstituted 9-11 membered fused heterocyclyl, d) cycloalkyl, and e) cycloalkenyl, preferably substituted or unsubstituted aryl selected from phenyl, naphthyl, indenyl and tetrahydronaphthyl, substituted or unsubstituted 5
6 membered heteroaryl, and substituted or unsubstituted 9-10 membered fused heteroaryl, more preferably phenyl, indazolyl, indolyl, 2,1,3 benzothiadiazolyl, isoquinolyl, quinolyl, and quinazolinyl, even more preferably phenyl, indazolyl, indolyl, isoquinolyl and quinolyl ;
wherein substituted R2 is substituted with one or more substituents independently selected from halo,-OR -SR7, -SO2R7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C (0) R7,-NH (C1-C4 alkylenylR7), optionally substituted cycloalkyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted phenyl, lower alkyl substituted with R1, cyano, nitro, lower alkenyl and lower alkynyl, preferably halo, -OR7, -SR7, -SO2R7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -NH(C1-C2-alkyleneylR7), -(C1-C2 alkyleneyl)NR7R7, -SO2NR7R7, -NRe7C(O)OR7, -NR7C (0) R7, optionally substituted cycloalkyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted phenyl, optionally substituted phenyl-C C2-alkylenyl,
optionally substituted 5-6 membered heterocyclyl-Cl¯C2-alkylenyl, Cl-C2-alkyl, cyano, Cl-C2- hydroxyalkyl, nitro and Cl-C2-haloalkyl, more preferably halc),-OR,-SR,-C02R,-CONR R -COR7, -NR7R7, -NH(C1-C2-alkylenyl-R7), -(C1-C2 alkyleneyl)NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C (0) R7, optionally substituted cycloalkyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted phenyl, optionally substituted phenyl Cl-C2-alkylenyl, optionally substituted 5-6 membered heterocyclyl-C1-C2-alkylenyl, C1-C2-alkyl, cyano, C C2-hydroxyalkyl, nitro and Cl-Cz-haloalkyl, additionally preferred are chloro, fluoro, amino, hydroxy, cyclohexyl, phenylmethyl, morpholinylmethyl, methylpiperdinylmethyl,
methylpiperazinylmethyl, ethyl, propyl, trifluoromethyl, phenyloxy, methoxy and ethoxy ; wherein R3 is selected from aryl, preferably phenyl; wherein R3 is substituted with one or more substituents independently selected from halo,-OR',-SR',-CoZR', -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)R7, cycloalkyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted heteroarylalkylenyl, optionally substituted phenyl, lower alkyl substituted with R1, cyano, nitro, lower alkenyl and lower alkynyl, preferably halo, -OR7, -SR7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)R7, cyano, lower hydroxyalkyl, lower aminoalkyl and nitro, more preferably halo, -OR7, -CONR7R7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)R7, cyano, amino-Cl-C2-alkyl,
hydroxy-Cl-C2-alkyl, and nitro, even more preferably chloro, fluoro, amino, hydroxy, hydroxymethyl, aminomethyl, nitro, methoxy and ethoxy; wherein R4 is independently selected from C2-C4 alkylenyl,
C2-C4 alkenylenyl and C2-C4 alkynylenyl, where one of the
CH2 groups may be substituted with an oxygen atom or an-
NH-, preferably C23-alkylenyl, where one of the CH2 groups may be substituted with an oxygen atom or an-NH- ; wherein Rs is selected from H, lower alkyl, phenyl and lower aralkyl, preferably H or C1-2-alkyl ; wherein R6 is selected from H or -alkyl ;
and wherein R7 is selected from H, lower alkyl, phenyl, 5-6 membered heterocyclyl, C3-C6 cycloalkyl, and lower haloalkyl, preferably H, Cl2-alkyl, phenyl, C3-C6 cycloalkyl and Ci-2- haloalkyl, more preferably H, methyl, ethyl, cyclopropyl, cyclohexyl and trifluoromethyl; and pharmaceutically acceptable salts thereof; provided R3 is substituted with one or more radicals selected from -OR7, -SR7, -CO2R7, -CONR7R7, -COR7, -NR7R7, lower aminoalkyl, lower alkylaminoalkyl,-So2NR7R7, -NR7C (o) oR7,-NR7C (G) R7, cyano or lower hydroxyalkyl.
The invention also relates to compounds of Formula II
EMI11.1
wherein each of A3 and A4 is independently C or N, provided at least one of A3 and A4 is N; wherein n is 1-2; wherein is one or more substituents independently selected from H, chloro, fluoro, bromo, amino, hydroxy, methyl, ethyl, propyl, trifluoromethyl, methoxy, ethoxy, trifluoromethoxy, carboxymethyl, unsubstituted or substituted phenyl and unsubstituted or substituted heteroaryl selected from thienyl, furanyl, pyridyl, imidazolyl and pyrazolyl;
wherein R2 is selected from phenyl, isoquinolyl and quinolyl, where R2 is unsubstituted or substituted with one or more substituents selected from chloro, fluoro, amino, hydroxy, cyclohexyl, phenylmethyl, morpholinylmethyl, methylpiperdinylmethyl, methylpiperazinylmethyl, ethyl, propyl, trifluoromethyl, phenyloxy, methoxy and ethoxy; and wherein R8 is one or more substituents independently selected from chloro, fluoro, methyl, cyano, amino, hydroxy, aminomethyl, hydroxymethyl, nitro, methoxy and ethoxy; and pharmaceutically acceptable salts thereof; provided R8 is one or more radicals selected from amino, cyano, aminomethyl, hydroxymethyl, hydroxy, methoxy and ethoxy.
A class of compounds useful in treating cancer and angiogenesis is defined by Formula I'
EMI12.1
wherein each of A1 and A2 is independently C or N; wherein A1-A2 form part of a ring A selected from 5-or 6 membered heteroaryl, preferably
I) 5-membered heteroaryl selected from thienyl, furanyl, pyrrolyl, thiazolyl, oxazolyl, imidazolyl, pyrazolyl, isoxazolyl, triazolyl and isothiazolyl, even more preferably 5-membered heteroaryl selected from
EMI12.2
EMI13.1
specifically
A)
EMI13.2
II) preferably 6-membered heteroaryl selected from pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, and triazinyl, even more preferably 6-membered heteroaryl selected from
EMI14.1
specifically, pyridyl and pyrimidinyl, more specifically
EMI14.2
wherein X is
EMI14.3
preferably X is
EMI14.4
more preferably X is
EMI14.5
wherein Z is oxygen or sulfur;
Y is selected from
EMI15.1
EMI15.2
preferably
EMI15.3
more preferably-NH-CHz- ; wherein p is 0 to 2, preferably 2; wherein Ra and Rb are independently selected from H, halo, cyano,-NHR6 and -alkyl substituted with R1, or wherein Ra and Rb together form C3-C6 cycloalkyl ; preferably H, halo, and C1-2-alkyl substituted with R1, or wherein Ra and Rb together form C3-C4 cycloalkyl, more preferably H, chloro, fluoro and Cl-C2-alkyl, even more preferably H; wherein RZ is selected from C2-C6-alkylenyl, where one of the
CH2 groups may be replaced with an oxygen atom or an-NH group; wherein one of the CH2 groups may be substituted with one or two radicals selected from halo, cyano,-NHR6 and -alkyl substituted with Rl ;
preferably C2-C3 alkylenyl, where one of the CH2 groups may be replaced with an oxygen atom or an-NH-, more preferably- (CH2) z- ; wherein Rd is optionally substituted cycloalkyl, preferably C36-cycloalkyl ; wherein R1 is one or more substituents independently selected from H, halo,-OR7, oxo, -SR7, -CO2R7, -COR7, -CONR7R7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)R7, optionally substituted cycloalkyl, optionally substituted phenylalkyl, optionally substituted heterocyclyl, optionally substituted heterocyclylalkyl, optionally substituted phenyl, lower alkyl, cyano, lower hydroxyalkyl, lower carboxyalkyl, nitro, lower alkenyl, lower alkynyl, lower aminoalkyl, lower alkylaminoalkyl and lower haloalkyl, preferably H, halo,-OR oxo, -SR7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7-, -NR7C(O)R7,
optionally substituted C36-cycloalkyl, optionally substituted phenyl-C14-alkyl, optionally substituted
4-6 membered heterocyclyl, optionally substituted phenyl, optionally substituted 4-6 membered heterocyclyl-C1-4-alkyl, Ci-6-a.
lkyl, cyano, 1-4- hydroxyalkyl, Cl-4-carboxyalkyl, nitro, C2-3-alkenyl, C2
3-alkynyl and C14-haloalkyl, more preferably H, halo, hydroxy, C1-4alkoxy, C12- haloalkoxy, amino, C1-2-alkylmaino, optionally substituted 4-6 membered heterocyclyl-C12 alkylamino, aminosulfonyl, C3-6-cycloalkyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted phenyl, C14-alkyl, cyano, C
2-hydroxyalkyl, C13-carboxyalkyl, nitro, 2-3 alkenyl, C2-3-alkylnyl and C12-haloalkyl, and even more preferably H, chloro, fluoro, bromo, hydroxy, methoxy, ethoxy, trifluoromethoxy, oxo, amino, dimethylamino, aminosulfonyl, carboxymethyl, cyclopropyl, optionally substituted phenyl, methyl, ethyl, propyl, cyano, hydroxymethyl, nitro,
propenyl, propynyl, trifluoromethyl and unsubstituted or substituted heteroaryl selected from thienyl, furanyl, pyridyl, imidazolyl and pyrazolyl; wherein R2 is selected from a) substituted or unsubstituted 6-10 membered aryl, preferably phenyl, naphthyl, benzodioxolyl, indanyl, indenyl and tetrahydronaphthyl, more preferably phenyl, indanyl, tetrahydronaphthyl, and naphthyl, b) substituted or unsubstituted 5-6 membered heterocyclyl, preferably 5-6 membered heteroaryl, more preferably isoxazolyl, pyrazolyl, thiazolyl, thiadiazolyl, thienyl, pyridyl, pyrimidinyl, pyridazinyl, imidazolyl, oxazolyl, furyl and pyrrolyl, c) substituted or unsubstituted 9-14 membered bicyclic or tricyclic heterocyclyl, preferably 9-10 membered bicyclic or 13-14 membered tricyclic heterocyclyl, more preferably indazolyl, indolyl, isoindolyl,
2,3-dihydro-lH-indolyl,
naphthyridinyl, 2,1,3 benzothiadiazolyl, isoquinolyl, quinolyl, 1, 2 dihydroquinolyl, 1,2,3,4-tetrahydro-isoquinolyl,
2,3,4,4a, 9,9a-hexahydro-lH-3-aza-fluorenyl,
5,6,7-trihydro-1,2,4-triazolo [3,4-a] isoquinolyl,
3,4-dihydro-2H-benzo [1,4] oxazinyl, benzothienyl, tetrahydroquinolyl, benzofuryl, benzimidazolyl, benzoxazolyl, benzthiazolyl, benzodioxanyl and quinazolinyl, even more preferably 9-10 membered bicyclic or 13
14 membered tricyclic saturated or partially unsaturated heterocyclyl, specifically 1,2-dihydroquinolyl, 1,2,3,4-tetrahydro isoquinolyl, 1,2,3,4-tetrahydro-quinolyl, 2,3 dihydro-1H-indolyl, 2,3,4,4a, 9,9a-hexahydro-1H-3 aza-fluorenyl, 5,6,7-trihydro-1,2,4-triazolo [3,4 a] isoquinolyl, 3,4-dihydro-2H-benzo [1,4] oxazinyl, and benzo [1, 4] dioxanyl ;
d) cycloalkyl, preferably C3-6-cycloalkyl, more preferably cyclohexyl, and e) cycloalkenyl, wherein substituted R2 is substituted with one or more substituents independently selected from halo,-OR oxo, -sR7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -NH(C1-C4 alkyleneylR9), -SO2R7, -SO2NR7R7, -NR7C(O)OR7, -NR7CO)R7, -NR7C (0) NR7R7, optionally substituted cycloalkyl, optionally substituted heterocyclyl, optionally substituted phenyl, halosulfonyl, cyano, alkylaminoalkoxy, alkylaminoalkoxyalkoxy, nitro, lower alkyl substituted with R1, lower alkenyl substituted with R1, and lower alkynyl substituted with Ru, preferably halo, -OR7, oxo, -SR7, -SO2R7, -CO2R7, -CoNR7R7,-CoR7,-NR7R7,-NH (Cl-C2-alkylenylR9), -(C1-C2-alkylenyl)NR7R7, -SO2NR7R7, NR7C (0) OR -NR7C (0)
R7, C1-C6alkylamino-C1-C6-alkoxy, C1-C6 alkylamino-Cl-C6-alkoxy-Cl-C6-alkoxy, halosulfonyl, optionally substituted 4-6 membered heterocyclyl carbonylalkyl, Cl-4-alkoxycarbonylamino-Cl-6-alkyl,
EMI19.1
optionally substituted C3-6cycloalkyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted phenyl, optionally substituted phenyl-C16-alkylenyl, optionally substituted 4-6 membered heterocyclyl
C1-C6-alkylenyl, 4-6 membered heterocyclyl-C2 C6- alkenylenyl, C1-4-alkyl, cyano, C1-4-hydroxyalkyl, nitro and CJ.-4-haloalkyl, more preferably halo, C14-alkyl, optionally substituted C36-cycloalkyl, optionally substituted phenyl, optionally substituted phenyl-C1-4alkylenyl,
C1-2-haloalkoxy, optionally substituted phenyloxy, optionally substituted 4-6 membered heterocyclyl-C1 C4- alkylenyl, optionally substituted 4-6 membered heterocyclyl-C2-C4-alkenylenyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted 4-6 membered heterocyclyloxy, optionally substituted 4-6 membered heterocyclylsulfonyl, optionally substituted 4-6 membered heterocyclylamino, optionally substituted 4-6 membered heterocyclylcarbonyl, optionally substituted
4-6 membered heterocyclyl-C1-4alkycarbonyl, Cl-2-haloalkyl, C1-4-aminoalkyl, nitro, amino, hydroxy, cyano, aminosulfonyl, C12- alkylsulfonyl, halosulfonyl, 1-4 alkylcarbonyl, C1-3-alkylamino-C1-3-alkyl, C1-3 alkylamino-C12-3-alkoxy, C1-3alkylamino-C1-3 alkoxy-C1-3-alkoxy, Ci-.
4-alkoxycarbonyl, 1-4- alkoxycarbonylamino-Cl4-alkyl, C14- hydroxyalkyl,
EMI20.1
and C14-alkoxy, even more preferably bromo, chloro, fluoro, iodo, nitro, amino, cyano, aminoethyl, Boc aminoethyl, hydroxy, aminosulfonyl, 4 methylpiperazinylsulfonyl, cyclohexyl, phenyl, phenylmethyl, morpholinylmethyl, methylpiperazinylmethyl, morpholinylethyl, methylpiperazinylpropyl, 1- (4-morpholinyl)-
2,2-dimethylpropyl, piperidinylmethyl, morpholinylpropyl, methylpiperidinylmethyl, piperidinylethyl, piperidinylpropyl, pyrrolidinylpropyl, pyrrolidinylpropenyl, pyrrolidinylbutenyl, fluorosulfonyl, methylsulfonyl, methylcarbonyl, piperidinylmethylcarbonyl, methylpiperazinylcarbonylethyl, methoxycarbonyl, 3-ethoxycarbonyl-2-methyl fur-5-yl, methylpiperazinyl, methylpiperidyl, 1-methyl- (1,
2,3,6 tetrahydropyridyl), imidazolyl, morpholinyl, 4-trifluoromethyl-1 piperidinyl, hydroxybutyl, methyl, ethyl, propyl, isopropyl, butyl, tert-butyl, sec butyl, trifluoromethyl, pentafluoroethyl, nonafluorobutyl, dimethylaminopropyl, 1,1 di (trifluoromethyl)-1-hydroxymethyl, trifluoromethoxy, 1, 1-di (trifluoromethyl)
1- (piperidinylethoxy) methyl, 1,1 di (trifluoromethyl)-1 (methoxyethoxyethoxy) methyl, 1- hydroxyethyl, 2-hydroxyethyl, 1-aminoethyl,
2-aminoethyl, 1- (N-isopropylamino) ethyl, 2 (N-isopropylamino)ethyl, dimethylaminoethoxy, 4-chlorophenoxy, phenyloxy, 1-methylpiperdin-4-yloxy, isopropoxy, methoxy and ethoxy;
wherein R3 is selected from unsubstituted or substituted aryl, preferably substituted phenyl, wherein substituted R3 is substituted with one or more substituents independently selected from halo, -OR7, -SR7, -SO2R7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, -NR7C (O) oR7,-NR7C (0) R7, cycloalkyl, optionally substituted heterocyclyl, optionally substituted phenyl, nitro, alkylaminoalkoxyalkoxy, cyano, alkylaminoalkoxy, lower alkyl substituted with R1, lower alkenyl substituted with R1, and lower alkynyl substituted with R1 ;
preferably halo, -OR7, -SR7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)R7, C3-6 cycloalkyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted phenyl, C1-4 alkyl, C1-4-aminoalkyl, cyano, C1-4-hydroxyalkyl, nitro and C1-4-ahloalkyl, more preferably halo, hydroxy, C1-4-alkyl, C1-2 alkoxy, optionally substituted 4-6 membered heterocyclyl-C1-2-alkoxy, amino, Cl-2-alkylamino, aminosulfonyl,-MR7C (O) OR7, -NR7C(O)R7, C3-6 cycloalkyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted phenyl, nitro, Ci-2-alkylamino-Ci-2-alkoxy-Ci-2-alkoxy, cyano, Cl-2-alkylamino-Cl-2-alkoxy, Cl-2-alkylamino- Cl2-alkyl, Cl2-alkylamino-C23-alkynyl, C1-2- hydroxyalkyl, C1-2-aminoalkyl,
C1-2haloalkyl, optionally substituted 4-6 membered heterocyclyl C23-alkenyl, and optionally substituted 4-6 membered heterocyclyl-C2-3-alkynyl, even more preferably chloro, fluoro, bromo, hydroxy, methoxy, ethoxy, amino, dimethylamino, diethylamino, 1- methylpiperidinylmethoxy, aminosulfonyl, cyclohexyl, dimethylaminopropynyl, dimethylaminoethoxy, 3- (4-morpholinyl) propyn
1-yl, dimethylaminoethoxyethoxy, optionally substituted piperidinyl, morpholinyl, optionally substituted piperazinyl, optionally substituted phenyl, methyl, ethyl, propyl, cyano, hydroxymethyl, aminomethyl, nitro and trifluoromethyl;
wherein R4 is independently selected from a direct bond, C2
4-alkylenyl, C2-4-alkenylenyl and C2-4-alkynylenyl, where one of the CH2 groups may be substituted with an oxygen atom or-NH-, wherein R4 is optionally substituted with hydroxy, preferably a direct bond or R4a ; wherein R4a is selected from C2-4-alkylenyl where one of the
CH2 groups may be replaced with an oxygen atom or-NH-, wherein R4a is optionally substituted with hydroxy, preferably ethyl, butyl, and
EMI22.1
wherein R@ is selected from H, lower alkyl, phenyl and lower aralkyl, preferably H, methyl or ethyl, more preferably H;
wherein R"is selected from H, lower alkyl, phenyl and lower aralkyl, preferably H, methyl or ethyl, more preferably H; wherein R6 is selected from H or Cl6-alkyl, preferably H or C1-2 alkyl ; wherein R7 is selected from H, lower alkyl, optionally substituted phenyl, optionally substituted heterocyclyl, optionally substituted C3-C6-cycloalkyl, optionally substituted phenyl-CI-6-alkyl, optionally substituted heterocyclyl-Cl6-alkyl, optionally substituted C3-C6 cycloalkyl-Ci-e-alkyI, lower alkylaminoalkyl, and lower haloalkyl, preferably H, C1-4-alkyl, optionally substituted phenyl, optionally substituted phenyl-Cl4-alkyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted 4-6 membered heterocyclyl-C1-4-alkyl,
optionally substituted C3-C6 cycloalkyl, C1-2 alkylamino-Cl4-alkyl and Cl2-haloalkyl, more preferably H, methyl, phenyl, cyclopropyl, cyclohexyl, benzyl, morpholinylmethyl, 4 methylpiperazinylmethyl, 4-methylpiperdinylmethyl,
4-morpholinylmethyl, 4-morpholinylethyl, 1- (4- morpholinyl)-2,2-dimethylpropyl, 1-piperdinylethyl, 1-piperdinylpropyl, 1-pyrrolidinylpropyl and trifluoromethyl; wherein Rc is selected from H, methyl and optionally substituted phenyl; and wherein Re and Rf are independently selected from H and C1-2 haloalkyl, preferably-CF3 ;
wherein Rg is selected from H, C1-6-alkyl, optionally substituted phenyl-C1-6-alkyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted 4-6 membered heterocyclyl-C1-C6-alkyl, C1-6-alkioxy-C1-4-alkyl and C1-4-alkoxy-C1-4-alkoxy-C1-4-alkyl, preferably H, C13-alkyl, optionally substituted phenyl-C
3-alkyl, optionally substituted 4-6 membered heterocyclyl-Cl C3-alkyl, Cl3-alkoxy-Cl3-alkyl and C. 1-3- alkoxy-Cl3-alkoxy-Cl3-alkyl ; and wherein R9 is selected from H, optionally substituted phenyl, optionally substituted 4-6 membered heterocyclyl and C3-C6 cycloalkyl ;
provided R2 is not 3-trifluoromethylphenyl when A is pyridyl, when X is-C (O) NH-, when Y is-NH-CH2-, when R1 is H and R3 is 3-(N-metylamino-carbonyl) phenyl, 4 hydroxyphenyl, 3-hydroxyphenyl or phenyl; further provided R2 is not substituted with -SO2NR7R7 when Y is-NHS02- ; further provided R2 is not 3-trifluoromethylphenyl when A is pyridyl, when X is-C (O) NH-, when Y is-N (benzyl) -Ch2-, when R1 is H and when R3 is phenyl; further provided R2 is not cyclohexyl when A is pyridyl, when X is-C (O) NH-, when Y is-NH-CH2-, when R1 is H and when R3 is 2-methoxyphenyl or 3-methoxyphenyl;
further provided R1 is not 2-hydroxymethylpyrrol-5-yl when A is pyridyl; further provided R1 is not 4 (methoxyaminocarbonylamino) phenyl when A is thienyl; further provided R1 is not 2-pyridylmethoxy when A is pyrimidyl, when X is-C (O) NH-, and when Y is -NH-CH2-; further provided R1 is not 4-methylpiperidyl when A is pyrimidyl, when X is-C (O) NH-, when Y is-NH-CH2-, and when R3 is 3-chloro-4-methoxyphenyl ; further provided R1 is not bromo when A is pyrimidyl, when X is-C (O) NH-CH2-, when Y is-NH-CH2-, and when R3 is 3 chloro-4-methoxyphenyl; further provided R is not 2-chloro-3-pyridyl when A is pyridyl;
and further provided R2 is not 2-methoxyphenyl when A is pyridyl, when X is-C (O) NH-, when Y is -NH-CH2-, when is H and R3 is phenyl.
The invention also relates to compounds of Formula II'
EMI25.1
wherein each of A3 and A4 is independently CH or N, provided at least one of A3 and A4 is N; wherein n is 1-2; wherein R1 is one or more substituents independently selected from H, chloro, fluoro, bromo, hydroxy, methoxy, ethoxy, trifluoromethoxy, oxo, amino, dimethylamino, aminosulfonyl, carboxymethyl, cyclopropyl, optionally substituted phenyl, methyl, ethyl, propyl, cyano, hydroxymethyl, nitro, propenyl, propynyl, morpholinylethylamino, trifluoromethyl and unsubstituted or substituted heteroaryl selected from thienyl, furanyl, pyridyl, imidazolyl and pyrazolyl;
wherein R2 is a substituted or unsubstituted ring selected from phenyl, tetrahydronaphthyl, indanyl, benzodioxolyl, indenyl, naphthyl, isoxazolyl, pyrazolyl, thiazolyl, thiadiazolyl, thienyl, pyridyl, pyrimidinyl, pyridazinyl, 1, 2-dihydroquinolyl, 1,2,3,4-tetrahydro-isoquinolyl, 1, 2,3,4-tetrahydro-quinolyl, isoquinolyl, quinolyl, indolyl, isoindolyl, 2,3-dihydro-lH-indolyl, naphthyridinyl, quinozalinyl, 2, 3,4,4a, 9,9a-hexahydro-lH
3-aza-fluorenyl, 5,6,7-trihydro-1,2,4-triazolo [3,4 a] isoquinolyl, indazolyl, 2,1,3-benzothiadiazolyl, 3,4 dihydro-2H-benzo [1,4] oxazinyl, benzodioxanyl, benzothienyl, benzofuryl, benzimidazolyl, benzoxazolyl and benzthiazolyl;
wherein substituted RZ is substituted with one or more substituents independently selected from bromo, chloro, fluoro, iodo, nitro, amino, cyano, aminoethyl,
Boc-aminoethyl, hydroxy, oxo, aminosulfonyl, 4methylpiperazinylsulfonyl, cyclohexyl, phenyl, phenylmethyl, morpholinylmethyl, 1-methylpiperazin-4ylmethyl, 1-methylpiperazin-4-ylpropyl, morpholinylpropyl, piperidin-1-ylmethyl, 1- methylpiperidin-4-ylmethyl, 2-methyl-2- (1- methylpiperidin-4-yl) ethyl, morpholinylethyl, 1- (4- morpholinyl)-2,2-dimethylpropyl, piperidin-4-ylethyl, 1-Boc-piperidin-4-ylethyl, piperidin-1-ylethyl, 1-Boc- piperidin-4-ylethyl, piperidin-4-ylmethyl, 1-Boc- piperidin-4-ylmethyl, piperidin-4-ylpropyl, 1-Boc- piperidin-4-ylpropyl,
piperidin-1-ylpropyl, pyrrolidin-1-ylpropyl, pyrrolidin-2-ylpropyl, 1-Boc- pyrrolidin-2-ylpropyl, pyrrolidin-1-ylmethyl, pyrrolidin-2-ylmethyl, 1-Boc-pyrrolidin-2-ylmethyl, pyrrolidinylpropenyl, pyrrolidinylbutenyl, fluorosulfonyl, methylsulfonyl, methylcarbonyl, Boc, piperidin-1-ylmethylcarbonyl, 4-methylpiperazin-lylcarbonylethyl, methoxycarbonyl, aminomethylcarbonyl, dimethylaminomethylcarbonyl, 3-ethoxycarbonyl-2methyl-fur-5-yl, 4-methylpiperazin-1-yl, 4-methyl-1piperidyl, 1-Boc-4-piperidyl, piperidin-4-yl, 1 methylpiperidin-4-yl, 1-methyl- (1, 2,3,6tetrahydropyridyl), imidazolyl, morpholinyl, 4 trifluoromethyl-1-piperidinyl, hydroxybutyl, methyl, ethyl, propyl, isopropyl, butyl, tert-butyl,
secbutyl, trifluoromethyl, pentafluoroethyl, nonafluorobutyl, dimethylaminopropyl, 1,1di (trifluoromethyl)-1-hydroxymethyl, 1,1di (trifluoromethyl)-1- (piperidinylethoxy) methyl, 1,1di (trifluoromethyl)-1- (methoxyethoxyethoxy) methyl, 1hydroxyethyl, 2-hydroxyethyl, trifluoromethoxy, 1- aminoethyl, 2-aminoethyl, 1- (N-isopropylamino) ethyl, 2- (N-isopropylamino) ethyl, dimethylaminoethoxy, 4 chlorophenoxy, phenyloxy, azetidin-3-ylmethoxy, 1-Boc- azetidin-3-ylmethoxy, pyrrol-2-ylmethoxy, 1-Boc- pyrrol-2-ylmethoxy, pyrrol-1-ylmethoxy, 1-methyl pyrrol-2-ylmethoxy, 1-isopropyl-pyrrol-2-ylmethoxy, 1-
Boc-piperdin-4-ylmethoxy, piperdin-4-ylmethoxy, 1 methylpiperdin-4-yloxy, isopropoxy,
methoxy and ethoxy ; and wherein R8 is one or more substituents independently selected from H, chloro, fluoro, bromo, hydroxy, methoxy, ethoxy,-O-CH2-O-, trifluoromethoxy, 1- methylpiperidinylmethoxy, dimethylaminoethoxy, amino, dimethylamino, dimethylaminopropyl, diethylamino, aminosulfonyl, cyclohexyl, dimethylaminopropynyl, 3- (4- morpholinyl) propyn-1-yl, dimethylaminoethoxyethoxy, 3- (4- morpholinyl) propylamino, optionally substituted piperidinyl, morpholinyl, optionally substituted piperazinyl, optionally substituted phenyl, methyl, ethyl, propyl, cyano, hydroxymethyl, aminomethyl, nitro and trifluoromethyl;
provided R2 is not 3-trifluoromethylphenyl when A3 is N, when A4 is CH, when n is 1, when R1 is H and Ra is 4 hydroxy, 3-hydroxy or H; further provided R2 is not 2 chloro-3-pyridyl when A3 is N, when A4 is CH, when n is 1, when R1 is H and R8 is H or 4-methoxy; and further provided R2 is not 2-methoxyphenyl when A3 is N, when A4 is CH, when n is 1, when R1 is H and R8 is H.
The invention also relates to compounds of Formula III
EMI28.1
wherein R1 is one or more substituents independently selected from
H, halo, hydroxy, amino, Ci-g-alkyi,
C1-6-halo9alkyl,
C1-6-alkoxy, Cl2-alkylamino, aminosulfonyl, C36-cycloalkyl, cyano, oxo,
C1-2-hydroxyalkyl, nitro, C23-alkenyl,
C2-3-alkynyl,
C1-6-haloalkoxy, Cl6-carboxyalkyl,
5-6-membered heterocyclyl-C1-6-alkylamino, unsubstituted or substituted phenyl and unsubstituted or substituted 4-6 membered heterocyclyl, preferably H, chloro, fluoro, bromo, amino, hydroxy, methyl, ethyl, propyl, oxo, dimethylamino, aminosulfonyl, cyclopropyl, cyano, hydroxymethyl, nitro, propenyl, trifluoromethyl, methoxy, ethoxy, trifluoromethoxy, carboxymethyl, morpholinylethylamino, propynyl,
unsubstituted or substituted phenyl and unsubstituted or substituted heteroaryl selected from thienyl, furanyl, pyridyl, imidazolyl, and pyrazolyl, more preferably H, chloro or fluoro; wherein R2 is selected from unsubstituted or substituted phenyl, and
9-10 membered bicyclic and 13-14 membered tricyclic unsaturated or partially unsaturated heterocyclyl, preferably phenyl, 1,2-dihydroquinolyl, 1,2,3,4 tetrahydro-isoquinolyl, 1,2,3,4-tetrahydro-quinolyl,
2,3-dihydro-lH-indolyl, 2,3,4,4a, 9,9a-hexahydro-lH-3 aza-fluorenyl, 5,6,7-trihydro-1,2,4-triazolo [3,4 a] isoquinolyl, 3,4-dihydro-2H-benzo [1, 4] oxazinyl, and benzo [1,4] dioxanyl, more preferably phenyl, 1,2,3,4-tetrahydro isoquinolyl, 1,2,3,4-tetrahydro-quinolyl, 2,3 dihydro-lH-indolyl and 3,4-dihydro-2H benzo [1,4] oxazinyl;
wherein substituted R2 is substituted with one or more substituents selected from halo, C16-alkyl, optionally substituted C36-cycloalkyl, optionally substituted phenyl, optionally substituted phenyl Cl-C4-alkylenyl, C1¯2-haloalkoxy, optionally substituted phenyloxy, optionally substituted 4-6 membered heterocyclyl-C1-C4-alkyl, optionally substituted 4-6 membered heterocyclyl-C2-C4-alkenyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted 4-6 membered heterocyclyloxy, optionally substituted 4-6 membered heterocyclyl-C1 C4-alkoxy, optionally substituted 4-6 membered heterocyclylsulfonyl, optionally substituted 4-6 membered heterocyclylamino, optionally substituted 4-6 membered heterocyclylcarbonyl,
optionally substituted 5-6 membered heterocyclylcarbonyl-C14alkyl, optionally substituted 4-6 membered heterocyclyl-Cl4-alkylcarbonyl, Cl2-haloalkyl, C14- aminoalkyl, nitro, amino, hydroxy, cyano, aminosulfonyl, C12-alkylsulfonyl, halosulfonyl, 1-4alkylcarbonyl, C13-alkylamino-Cl3-alkyl, 1-3alkylamino-C1-3alkoxy, C1-3alkylamino-C1-3-ealkoxy-C13-alkoxy, Cl4-alkoxycarbonyl, C14- alkoxycarbonylamino-Cl4-alkyl, Cl4-hydroxyalkyl,
EMI30.1
and C14-alkoxy, preferably bromo, chloro, fluoro, iodo, nitro, amino, cyano, aminoethyl, Boc-aminoethyl, hydroxy, oxo, aminosulfonyl, 4-methylpiperazinylsulfonyl, cyclohexyl, phenyl, phenylmethyl, morpholinylmethyl, 1-methylpiperazin-4-ylmethyl,
1 methylpiperazin-4-ylpropyl, morpholinylpropyl, piperidin-1-ylmethyl, 1-methylpiperidin-4-ylmethyl, 2-methyl-2- (l-methylpiperidin-4-yl) ethyl, morpholinylethyl, 1- (4-morpholinyl)-2, 2 dimethylpropyl, piperidin-4-ylethyl, 1-Boc- piperidin-4-ylethyl, piperidin-1-ylethyl, 1-Boc- piperidin-4-ylethyl, piperidin-4-ylmethyl, 1-Boc- piperidin-4-ylmethyl, piperidin-4-ylpropyl, 1-Boc- piperidin-4-ylpropyl, piperidin-1-ylpropyl, pyrrolidin-1-ylpropyl, pyrrolidin-2-ylpropyl, 1
Boc-pyrrolidin-2-ylpropyl, pyrrolidin-1-ylmethyl, pyrrolidin-2-ylmethyl, 1-Boc-pyrrolidin-2-ylmethyl, pyrrolidinylpropenyl, pyrrolidinylbutenyl, fluorosulfonyl, methylsulfonyl,
methylcarbonyl,
Boc, piperidin-1-ylmethylcarbonyl, 4 methylpiperazin-1-ylcarbonylethyl, methoxycarbonyl, aminomethylcarbonyl, dimethylaminomethylcarbonyl,
3-ethoxycarbonyl-2-methyl-fur-5-yl, 4 methylpiperazin-1-yl, 4-methyl-1-piperidyl, 1-Boc-
4-piperidyl, piperidin-4-yl, 1-methylpiperidin-4 yl, 1-methyl- (1, 2,3,6-tetrahydropyridyl), imidazolyl, morpholinyl, 4-trifluoromethyl-1 piperidinyl, hydroxybutyl, methyl, ethyl, propyl, isopropyl, butyl, tert-butyl, sec-butyl, trifluoromethyl, pentafluoroethyl, nonafluorobutyl, dimethylaminopropyl, 1,1-di (trifluoromethyl)-1 hydroxymethyl, 1,1-di (trifluoromethyl)-1 (piperidinylethoxy) methyl, 1,1-di (trifluoromethyl)
1- (methoxyethoxyethoxy) methyl, 1-hydroxyethyl, 2 hydroxyethyl, trifluoromethoxy, 1-aminoethyl, 2 aminoethyl,
1- (N-isopropylamino) ethyl, 2- (N- isopropylamino) ethyl, dimethylaminoethoxy, 4 chlorophenoxy, phenyloxy, azetidin-3-ylmethoxy, 1-
Boc-azetidin-3-ylmethoxy, pyrrol-2-ylmethoxy, 1
Boc-pyrrol-2-ylmethoxy, pyrrol-1-ylmethoxy, 1 methyl-pyrrol-2-ylmethoxy, 1-isopropyl-pyrrol-2 ylmethoxy, 1-Boc-piperdin-4-ylmethoxy, piperdin-4 ylmethoxy, 1-methylpiperdin-4-yloxy, isopropoxy, methoxy and ethoxy, more preferably bromo, chloro, fluoro, morpholinylmethyl, 1-methylpiperazin-4-ylmethyl,
1-methylpiperazin-4-ylpropyl, morpholinylpropyl, piperidin-1-ylmethyl, 1-methylpiperidin-4 ylmethyl, 2-methyl-2- (1-methylpiperidin-4 yl) ethyl, morpholinylethyl, 1- (4-morpholinyl)
2,2-dimethylpropyl, piperidin-4-ylethyl, 1-Boc piperidin-4-ylethyl,
piperidin-1-ylethyl, 1-Boc- piperidin-4-ylethyl, piperidin-4-ylmethyl, 1-Boc- piperidin-4-ylmethyl, piperidin-4-ylpropyl, 1
Boc-piperidin-4-ylpropyl, piperidin-1-ylpropyl, pyrrolidin-1-ylpropyl, pyrrolidin-2-ylpropyl, 1-
Boc-pyrrolidin-2-ylpropyl, pyrrolidin-1-ylmethyl, pyrrolidin-2-ylmethyl, 1-Boc-pyrrolidin-2 ylmethyl, 4-methylpiperazin-1-yl, 4-methyl-1 piperidyl, 1-Boc-4-piperidyl, piperidin-4-yl, 1 methyl- (1, 2,3,6-tetrahydropyridyl), 1-methyl piperidin-4-yl, dimethylaminomethylcarbonyl, aminomethylcarbonyl, methylcarbonyl, methyl, ethyl, propyl, isopropyl, butyl, tert-butyl, sec butyl, trifluoromethyl, pentafluoroethyl, dimethylaminopropyl, dimethylaminoethoxy, 4 chlorophenoxy, phenyloxy,
azetidin-3-ylmethoxy,
1-Boc-azetidin-3-ylmethoxy, pyrrol-1-ylethoxy, 1-
methyl-pyrrol-2-ylmethoxy, pyrrol-2-ylmethoxy, 1
Boc-pyrrol-2-ylmethoxy, 1-Boc-piperdin-4- ylmethoxy, piperdin-4-ylmethoxy, and 1 methylpiperdin-4-yloxy, particularly when R2 is phenyl, it has a substituent selected from optionally substituted 4-6 membered heterocyclyl-Cl-C4- alkyl, optionally substituted 4-6 membered heterocyclyl-C2-C4-alkenyl, optionally substituted 4-6 membered heterocyclyl, optionally substituted 4-6 membered heterocyclyloxy, optionally substituted 4-6 membered heterocyclyl-C1 C4-alkoxy, optionally substituted 4-6 membered heterocyclylsulfonyl,
optionally substituted 4-6 membered heterocyclylamino, optionally substituted 4-6 membered heterocyclylcarbonyl, optionally substituted 4-6 membered heterocyclylcarbonyl Cl-4-alkyl, optionally substituted 4-6 membered heterocyclyl-Cl4-alkylcarbonyl wherein R is selected from H, C1¯3-alkyl, optionally substituted phenyl-C1-3-alkyl, 4-6 membered heterocyclyl, and optionally substituted 4-6 membered heterocyclyl-Cl ; wherein Re and Rf are independently selected from H and C1-2 haloalkyl, preferably-CF3 ;
wherein RI is selected from H, Cl3-alkyl, optionally substituted phenyl-C1-3-alkyl, 4-6 membered heterocyclyl, and optionally substituted 4-6 membered heterocyclyl-C1-C3-alkyl, C1-3e-alkoxy-C1-2-alkyl and Cl-3- alkoxy-C1-3-alkoxy-C1-3-alkyl ; and where R8 is one or more substituents selected from H, halo, amino, hydroxy, C1-6-alkyl, C1-6-haloalkyl, C1-6-alkoxy, C1
6-haloalkoxy, C1-6-aminoalkyl, Ci-g-hydroxyalkyi, optionally substituted phenyl, optionally substituted heterocyclyl, optionally substituted heterocyclyl-C16 alkoxy, aminosulfonyl, C3-6-cycloalkyl, C1-6alkylamino, Cl-
6-alkylamino-C1-6-alkyl, optionally substituted heterocyclyl-Cl6-alkylamino, optionally substituted heterocyclyl-C1-6-alkyl,
C1-6-alkylamino-C2-4-alkynyl, C1-6- alkylamino-C1-6-alkoxy, C1-6-alkylamino-C1-6-alkoxy-C1-6 alkoxy, and optionally substituted heterocyclyl-C2-4 alkynyl, preferably H, chloro, fluoro, bromo, hydroxy, methoxy, ethoxy,-O-CH2-O-, trifluoromethoxy, 1- methylpiperidinylmethoxy, dimethylaminoethoxy, amino, dimethylamino, dimethylaminopropyl, diethylamino, aminosulfonyl, cyclohexyl, dimethylaminopropynyl, 3- (4-morpholinyl) propyn-1 yl, dimethylaminoethoxyethoxy, 3- (4 morpholinyl) propylamino, optionally substituted piperidinyl, morpholinyl, optionally substituted piperazinyl, optionally substituted phenyl, methyl, ethyl, propyl, cyano, hydroxymethyl, aminomethyl and trifluoromethyl, more preferably H, chloro, fluoro, bromo, cyano, methoxy,-O-CH2-O-, amino, trifluoromethyl, trifluoromethoxy,
3- (4-morpholinyl) propyn-1-yl, dimethylaminopropyl, and 3- (4- morpholinyl) propylamino, particularly 4-fluoro; provided R2 is not 3-trifluoromethylphenyl when R1 is H and
R8 is 4-hydroxy, 3-hydroxy or H; and further provided R2 is not 2-methoxyphenyl when R1 is H and R8 is H.
A family of specific compounds of particular interest within Formula I consists of compounds and pharmaceuticallyacceptable derivatives thereof as follows: 2- (3-Fluoro-benzylamino)-N- (4-phenoxy-phenyl)-nicotinamide ; 2- (3-Fluoro-benzylamino)-N- (4-phenoxy-phenyl)-nicotinamide, trifluoroacetate salt; N- [4-tert-Butyl-3- (pyrrolidin-2-ylmethoxy)-phenyl]-2- (4- fluoro-benzylamino)-nicotinamide, hydrochloride salt ; N- (4-Phenoxy-phenyl)-2- (3-trifluoromethyl-benzylamino)- nicotinamide; 2- (4-Fluoro-benzylamino)-N- (4-phenoxy-phenyl)-nicotinamide ; N- (4-Phenoxy-phenyl)-2- (4-trifluoromethyl-benzylamino)- nicotinamide ;
2- (2-Bromo-benzylamino)-N- (4-phenoxy-phenyl)-nicotinamide ; N- (4-Phenoxy-phenyl)-2- (4-trifluoromethoxy-benzylamino)- nicotinamide; 2- (2, 3-Difluoro-benzylamino)-N- (4-phenoxy-phenyl)- nicotinamide;
N-(4-Chlorophenyl) (2-{[(4-cyanophenyl)methyl]amino} (3 pyridyl))carboxamide; N- (4-Chlorophenyl) (2- { [ (2-cyanophenyl) methyl] amino} (3 pyridyl)) carboxamide; N- (4-sec-butylphenyl)-2- [ (4-fluorobenzyl) amino] nicotinamide ; N- (4-tert-Butylphenyl)-2- [ (4- fluorobenzyl) amino] nicotinamide ; N- (4-Isopropyl-phenyl)-2- (3-methoxy-benzylamino)- nicotinamide; (2-{[(3-Aminopheneyl) methyl] amino} (3-pyridyl))-N- [4- (methylethyl) phenyl] carboxamide ;
(2-{[(4-Fluorophenyl)methyl]amino}(3-pyridyl))-N-[4 (methylethyl) phenyl] carboxamide; (2-{[(4-Fluorophenyl)methyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl) phenyl] carboxamide ; (2- { [ (3, 4-Dimethoxyphenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide ; {2- [Benzylamino] (3-pyridyl)}-N- [3- (trifluoromethyl) phenyl]-carboxamide ; (2-{[(3-Chlorophenyl)methyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl) phenyl] carboxamide; (2- { [ (4-Bromophenyl) methyl] amino} (3-pyridyl))-N- [3 (trifluoromethyl) phenyl] carboxamide ;
(2-{[(4-Chlorophenyl)methyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl) phenyl] carboxamide; (2- { [ (2, 4-Difluorophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide ; (2-{[(4-Fluorophenyl)ethyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl) phenyl] carboxamide; (2-{[(3, 4-Difluorophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide;
(2-{[(2, 3-Difluorophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide ; (2-{l (2-Fluorophenyl) methyl] amino) (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide ; (2-{l (2,6-Difluorophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide ; (2- { [ (3-Bromophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide ;
(2-{[(4-Fluorophenyl)methyl]amino} (3-pyridyl))-N-[4 (trifluoromethyl) phenyl] carboxamide ; N- {3- [3- (Dimethylamino) propyl]-5- (trifluoromethyl) phenyl} (2 {[(4-fluorophenyl) methyl] amino} (3-pyridyl)) carboxamide; {2-l ({3-[3-(Dimethylamino) propyl]-4- fluorophenyl} methyl) amino] (3-pyridyl)}-N- [4- (tert- butyl) phenyl] carboxamide; {2- [ ( {3- [3- (Dimethylamino) propyl]-4 fluorophenyl} methyl) amino] (3-pyridyl)}-N- [4- (trifluoromethyl) phenyl] carboxamide ; {2-[({3-[3-(Dimethylamino)propyl]-4 fluorophenyl} methyl) amino] (3-pyridyl)}-N- (4-bromo-2- fluorophenyl) carboxamide;
2- [ (4-Fluorobenzyl) amino]-N- [4-tert-butyl-3- (1, 2,3,6 tetrahydropyridin-4-yl) phenyl] nicotinamide ; and [2- ( { [4-Fluoro-3- (3-morpholin-4-ylprop-l- ynyl) phenyl] methyl} amino) (3-pyridyl)]-N- [3- (trifluoromethyl) phenyl] carboxamide.
Indications
Compounds of the present invention would be useful for, but not limited to, the prevention or treatment of angiogenesis-related diseases. The compounds of the invention have kinase inhibitory activity, such as VEGFR/KDR inhibitory activity. The compounds of the invention are useful in therapy as antineoplasia agents or to minimize deleterious effects of VEGF.
Compounds of the invention would be useful for the treatment of neoplasia including cancer and metastasis, including, but not limited to: carcinoma such as cancer of the bladder, breast, colon, kidney, liver, lung (including small cell lung cancer), esophagus, gall-bladder, ovary, pancreas, stomach, cervix, thyroid, prostate, and skin (including squamous cell carcinoma); hematopoietic tumors of lymphoid lineage (including leukemia, acute lymphocitic leukemia, acute lymphoblastic leukemia, B-cell lymphoma, Tcell-lymphoma, Hodgkin's lymphoma, non-Hodgkin's lymphoma, hairy cell lymphoma and Burkett's lymphoma); hematopoietic tumors of myeloid lineage (including acute and chronic myelogenous leukemias, myelodysplastic syndrome and promyelocytic leukemia);
tumors of mesenchymal origin (including fibrosarcoma and rhabdomyosarcoma, and other sarcomas, e. g. soft tissue and bone); tumors of the central and peripheral nervous system (including astrocytoma, neuroblastoma, glioma and schwannomas); and other tumors (including melanoma, seminoma, teratocarcinoma, osteosarcoma, xenoderoma pigmentosum, keratoctanthoma, thyroid follicular cancer and Kaposi's sarcoma).
Preferably, the compounds are useful for the treatment of neoplasia selected from lung cancer, colon cancer and breast cancer.
The compounds also would be useful for treatment of ophthalmological conditions such as corneal graft rejection, ocular neovascularization, retinal neovascularization including neovascularization following injury or infection, diabetic retinopathy, retrolental fibroplasia and neovascular glaucoma; retinal ischemia; vitreous hemorrhage; ulcerative diseases such as gastric ulcer; pathological, but non-malignant, conditions such as hemangiomas, including infantile hemaginomas, angiofibroma of the nasopharynx and avascular necrosis of bone; and disorders of the female reproductive system such as endometriosis. The compounds are also useful for the treatment of edema, and conditions of vascular hyperpermeability.
The compounds of the invention are useful in therapy of proliferative diseases. These compounds can be used for the treatment of an inflammatory rheumatoid or rheumatic disease, especially of manifestations at the locomotor apparatus, such as various inflammatory rheumatoid diseases, especially chronic polyarthritis including rheumatoid arthritis, juvenile arthritis or psoriasis arthropathy ; paraneoplastic syndrome or tumor-induced inflammatory diseases, turbid effusions, collagenosis, such as systemic
Lupus erythematosus, poly-myositis, dermato-myositis, systemic sclerodermia or mixed collagenosis; postinfectious arthritis (where no living pathogenic organism can be found at or in the affected part of the body), seronegative spondylarthritis, such as spondylitis ankylosans;
vasculitis, sarcoidosis, or arthrosis; or further any combinations thereof. An example of an inflammation related disorder is (a) synovial inflammation, for example, synovitis, including any of the particular forms of synovitis, in particular bursal synovitis and purulent synovitis, as far as it is not crystal-induced. Such synovial inflammation may for example, be consequential to or associated with disease, e. g. arthritis, e. g. osteoarthritis, rheumatoid arthritis or arthritis deformans.
The present invention is further applicable to the systemic treatment of inflammation, e. g. inflammatory diseases or conditions, of the joints or locomotor apparatus in the region of the tendon insertions and tendon sheaths. Such inflammation may be, for example, be consequential to or associated with disease or further (in a broader sense of the invention) with surgical intervention, including, in particular conditions such as insertion endopathy, myofasciale syndrome and tendomyosis. The present invention is further especially applicable to the treatment of inflammation, e. g. inflammatory disease or condition, of connective tissues including dermatomyositis and myositis.
These compounds can be used as active agents against such disease states as arthritis, atherosclerosis, psoriasis, hemangiomas, myocardial angiogenesis, coronary and cerebral collaterals, ischemic limb angiogenesis, wound healing, peptic ulcer Helicobacter related diseases, fractures, cat scratch fever, rubeosis, neovascular glaucoma and retinopathies such as those associated with diabetic retinopathy or macular degeneration.
In addition, some of these compounds can be used as active agents against solid tumors, malignant ascites, hematopoietic cancers and hyperproliferative disorders such as thyroid hyperplasia (especially Grave's disease), and cysts (such as hypervascularity of ovarian stroma, characteristic of polycystic ovarian syndrome (Stein-Leventhal syndrome)) since such diseases require a proliferation of blood vessel cells for growth and/or metastasis.
Further, some of these compounds can be used as active agents against burns, chronic lung disease, stroke, polyps, anaphylaxis, chronic and allergic inflammation, ovarian hyperstimulation syndrome, brain tumor-associated cerebral edema, high-altitude, trauma or hypoxia induced cerebral or pulmonary edema, ocular and macular edema, ascites, and other diseases where vascular hyperpermeability, effusions, exudates, protein extravasation, or edema is a manifestation of the disease. The compounds will also be useful in treating disorders in which protein extravasation leads to the deposition of fibrin and extracellular matrix, promoting stromal proliferation (e. g. fibrosis, cirrhosis and carpal tunnel syndrome).
The compounds of the present invention are also useful in the treatment of ulcers including bacterial, fungal,
Mooren ulcers and ulcerative colitis.
The compounds of the present invention are also useful in the treatment of conditions wherein undesired angiogenesis, edema, or stromal deposition occurs in viral infections such as Herpes simplex, Herpes Zoster, AIDS,
Kaposi's sarcoma, protozoan infections and toxoplasmosis, following trauma, radiation, stroke, endometriosis, ovarian hyperstimulation syndrome, systemic lupus, sarcoidosis, synovitis, Crohn's disease, sickle cell anaemia, Lyme disease, pemphigoid, Paget's disease, hyperviscosity syndrome, Osler-Weber-Rendu disease, chronic inflammation, chronic occlusive pulmonary disease, asthma, and inflammatory rheumatoid or rheumatic disease. The compounds are also useful in the reduction of sub-cutaneous fat and for the treatment of obesity.
The compounds of the present invention are also useful in the treatment of ocular conditions such as ocular and macular edema, glaucoma, ocular neovascular disease, scleritis, radial keratotomy, uveitis, vitritis, myopia, optic pits, chronic retinal detachment, post-laser complications, conjunctivitis, Stargardt's disease and Eales disease in addition to retinopathy and macular degeneration.
The compounds of the present invention are also useful in the treatment of cardiovascular conditions such as atherosclerosis, restenosis, arteriosclerosis, vascular occlusion and carotid obstructive disease.
The compounds of the present invention are also useful in the treatment of cancer related indications such as solid tumors, sarcomas (especially Ewing's sarcoma and osteosarcoma), retinoblastoma, rhabdomyosarcomas, neuroblastoma, hematopoietic malignancies, including leukemia and lymphoma, tumor-induced pleural or pericardial effusions, and malignant ascites.
The compounds of the present invention are also useful in the treatment of diabetic conditions such as diabetic retinopathy and microangiopathy.
The compounds of this invention may also act as inhibitors of other protein kinases, e. g. p38, EGFR, CDK-2,
CDK-5, IKK, JNK3, and thus be effective in the treatment of diseases associated with other protein kinases.
Besides being useful for human treatment, these compounds are also useful for veterinary treatment of companion animals, exotic animals and farm animals, including mammals, rodents, and the like. More preferred animals include horses, dogs, and cats.
As used herein, the compounds of the present invention include the pharmaceutically acceptable derivatives thereof.
Definitions
A"pharmaceutically-acceptable derivative"denotes any salt, ester of a compound of this invention, or any other compound which upon administration to a patient is capable of providing (directly or indirectly) a compound of this invention, or a metabolite or residue thereof, characterized by the ability to inhibit angiogenesis.
The term"treatment"includes therapeutic treatment as well as prophylactic treatment (either preventing the onset of disorders altogether or delaying the onset of a preclinically evident stage of disorders in individuals).
The phrase"therapeutically-effective"is intended to qualify the amount of each agent, which will achieve the goal of improvement in disorder severity and the frequency of incidence over treatment of each agent by itself, while avoiding adverse side effects typically associated with alternative therapies. For example, effective neoplastic therapeutic agents prolong the survivability of the patient, inhibit the rapidly-proliferating cell growth associated with the neoplasm, or effect a regression of the neoplasm.
The term"prevention"includes either preventing the onset of disorders altogether or delaying the onset of a preclinically evident stage of disorders in individuals.
This includes prophylactic treatment of those at risk of developing a disease, such as a cancer, for example.
"Prophylaxis"is another term for prevention.
The term"H"denotes a single hydrogen atom. This radical may be attached, for example, to an oxygen atom to form a hydroxyl radical.
Where the term"alkyl"is used, either alone or within other terms such as"haloalkyl"and"alkylamino", it embraces linear or branched radicals having one to about twelve carbon atoms. More preferred alkyl radicals are "lower alkyl"radicals having one to about six carbon atoms.
Examples of such radicals include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, pentyl, isoamyl, hexyl and the like. Even more preferred are lower alkyl radicals having one or two carbon atoms. The term "alkylenyl"embraces bridging divalent alkyl radicals such as methylenyl and ethylenyl. The term"lower alkyl substituted with Redoes not include an acetal moiety.
The term"alkenyl"embraces linear or branched radicals having at least one carbon-carbon double bond of two to about twelve carbon atoms. More preferred alkenyl radicals are"lower alkenyl"radicals having two to about six carbon atoms. Most preferred lower alkenyl radicals are radicals having two to about four carbon atoms. Examples of alkenyl radicals include ethenyl, propenyl, allyl, propenyl, butenyl and 4-methylbutenyl. The terms"alkenyl"and"lower alkenyl", embrace radicals having"cis"and"trans" orientations, or alternatively,"E"and"Z"orientations.
The term"alkynyl"denotes linear or branched radicals having at least one carbon-carbon triple bond and having two to about twelve carbon atoms. More preferred alkynyl radicals are"lower alkynyl"radicals having two to about six carbon atoms. Most preferred are lower alkynyl radicals having two to about four carbon atoms. Examples of such radicals include propargyl, butynyl, and the like.
The term"halo"means halogens such as fluorine, chlorine, bromine or iodine atoms.
The term"haloalkyl"embraces radicals wherein any one or more of the alkyl carbon atoms is substituted with halo as defined above. Specifically embraced are monohaloalkyl, dihaloalkyl and polyhaloalkyl radicals including perhaloalkyl. A monohaloalkyl radical, for one example, may have either an iodo, bromo, chloro or fluoro atom within the radical. Dihalo and polyhaloalkyl radicals may have two or more of the same halo atoms or a combination of different halo radicals."Lower haloalkyl"embraces radicals having 1- 6 carbon atoms. Even more preferred are lower haloalkyl radicals having one to three carbon atoms.
Examples of haloalkyl radicals include fluoromethyl, difluoromethyl, trifluoromethyl, chloromethyl, dichloromethyl, trichloromethyl, pentafluoroethyl, heptafluoropropyl, difluorochloromethyl, dichlorofluoromethyl, difluoroethyl, difluoropropyl, dichloroethyl and dichloropropyl.
"Perfluoroalkyl"means alkyl radicals having all hydrogen atoms replaced with fluoro atoms. Examples include trifluoromethyl and pentafluoroethyl.
The term"hydroxyalkyl"embraces linear or branched alkyl radicals having one to about ten carbon atoms any one of which may be substituted with one or more hydroxyl radicals. More preferred hydroxyalkyl radicals are"lower hydroxyalkyl't radicals having one to six carbon atoms and one or more hydroxyl radicals. Examples of such radicals include hydroxymethyl, hydroxyethyl, hydroxypropyl, hydroxybutyl and hydroxyhexyl. Even more preferred are lower hydroxyalkyl radicals having one to three carbon atoms.
The term"alkoxy embrace linear or branched oxycontaining radicals each having alkyl portions of one to about ten carbon atoms. More preferred alkoxy radicals are "lower alkoxy"radicals having one to six carbon atoms.
Examples of such radicals include methoxy, ethoxy, propoxy, butoxy and tert-butoxy. Even more preferred are lower alkoxy radicals having one to three carbon atoms. Alkoxy radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide"haloalkoxy" radicals. Even more preferred are lower haloalkoxy radicals having one to three carbon atoms. Examples of such radicals include fluoromethoxy, chloromethoxy, trifluoromethoxy, trifluoroethoxy, fluoroethoxy and fluoropropoxy.
The term"aryl", alone or in combination, means a carbocyclic aromatic system containing one or two rings wherein such rings may be attached together in a fused manner. The term"aryl"embraces aromatic radicals such as phenyl, naphthyl, indenyl, tetrahydronaphthyl, and indanyl.
More preferred aryl is phenyl. Said"aryl"group may have 1 to 3 substituents such as lower alkyl, hydroxyl, halo, haloalkyl, nitro, cyano, alkoxy and lower alkylamino. Phenyl substituted with-O-CH2-O-forms the aryl benzodioxolyl substituent.
The term"heterocyclyl"embraces saturated, partially saturated and unsaturated heteroatom-containing ring radicals, where the heteroatoms may be selected from nitrogen, sulfur and oxygen. It does not include rings containing-0-0-,-0-S-or-S-S-portions. Said "heterocyclyl"group may have 1 to 3 substituents such as hydroxyl, Boc, halo, haloalkyl, cyano, lower alkyl, lower aralkyl, oxo, lower alkoxy, amino and lower alkylamino.
Examples of saturated heterocyclic radicals include saturated 3 to 6-membered heteromonocyclic groups containing 1 to 4 nitrogen atoms [e. g. pyrrolidinyl, imidazolidinyl, piperidinyl, pyrrolinyl, piperazinyl] ; saturated 3 to 6membered heteromonocyclic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms [e. g. morpholinyl] ; saturated 3 to 6-membered heteromonocyclic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms [e. g., thiazolidinyl]. Examples of partially saturated heterocyclyl radicals include dihydrothienyl, dihydropyranyl, dihydrofuryl and dihydrothiazolyl.
Examples of unsaturated heterocyclic radicals, also termed"heteroaryl"radicals, include unsaturated 5 to 6 membered heteromonocyclyl group containing 1 to 4 nitrogen atoms, for example, pyrrolyl, imidazolyl, pyrazolyl, 2pyridyl, 3-pyridyl, 4-pyridyl, pyrimidyl, pyrazinyl, pyridazinyl, triazolyl [e. g., 4H-1, 2,4-triazolyl, IH-1, 2,3triazolyl, 2H-1, 2,3-triazolyl]; unsaturated 5-to 6-membered heteromonocyclic group containing an oxygen atom, for example, pyranyl, 2-furyl, 3-furyl, etc.; unsaturated 5 to 6-membered heteromonocyclic group containing a sulfur atom, for example, 2-thienyl, 3-thienyl, etc.;
unsaturated 5-to 6-membered heteromonocyclic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms, for example, oxazolyl, isoxazolyl, oxadiazolyl [e. g., 1,2,4-oxadiazolyl, 1,3,4oxadiazolyl, 1,2,5-oxadiazolyl]; unsaturated 5 to 6-membered heteromonocyclic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms, for example, thiazolyl, thiadiazolyl [e. g., 1,2,4-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,5thiadiazolyl].
The term also embraces radicals where heterocyclic radicals are fused/condensed with aryl radicals: unsaturated condensed heterocyclic group containing 1 to 5 nitrogen atoms, for example, indolyl, isoindolyl, indolizinyl, benzimidazolyl, quinolyl, isoquinolyl, indazolyl, benzotriazolyl, tetrazolopyridazinyl [e. g., tetrazolo [1, 5-b] pyridazinyl] ; unsaturated condensed heterocyclic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms [e. g. benzoxazolyl, benzoxadiazolyl] ; unsaturated condensed heterocyclic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms [e. g., benzothiazolyl, benzothiadiazolyl];
and saturated, partially unsaturated and unsaturated condensed heterocyclic group containing 1 to 2 oxygen or sulfur atoms [e. g. benzofuryl, benzothienyl, 2,3-dihydro-benzo [1, 4] dioxinyl and dihydrobenzofuryl]. Preferred heterocyclic radicals include five to ten membered fused or unfused radicals. More preferred examples of heteroaryl radicals include quinolyl, isoquinolyl, imidazolyl, pyridyl, thienyl, thiazolyl, oxazolyl, furyl, and pyrazinyl. Other preferred heteroaryl radicals are 5-or 6-membered heteroaryl, containing one or two heteroatoms selected from sulfur, nitrogen and oxygen, selected from thienyl, furyl, pyrrolyl, indazolyl, pyrazolyl, oxazolyl, triazolyl, imidazolyl, pyrazolyl, isoxazolyl, isothiazolyl, pyridyl, piperidinyl and pyrazinyl.
Particular examples of non-nitrogen containing heteroaryl include pyranyl, 2-furyl, 3-furyl, 2-thienyl, 3thienyl, benzofuryl, benzothienyl, and the like.
Particular examples of partially saturated and saturated heterocyclyl include pyrrolidinyl, imidazolidinyl, piperidinyl, pyrrolinyl, pyrazolidinyl, piperazinyl, morpholinyl, tetrahydropyranyl, thiazolidinyl, dihydrothienyl, 2,3-dihydro-benzo [1, 4] dioxanyl, indolinyl, isoindolinyl, dihydrobenzothienyl, dihydrobenzofuryl, isochromanyl, chromanyl, 1,2-dihydroquinolyl, 1,2,3,4tetrahydro-isoquinolyl, 1,2,3,4-tetrahydro-quinolyl, 2,3,4,4a, 9,9a-hexahydro-lH-3-aza-fluorenyl, 5,6,7-trihydro1,2,4-triazolo [3,4-a] isoquinolyl, 3,4-dihydro-2Hbenzo [1, 4] oxazinyl, benzo [1, 4] dioxanyl, 2,3-dihydro-lH-1N'benzo [d] isothiazol-6-yl, dihydropyranyl, dihydrofuryl and dihydrothiazolyl, and the like.
The term"sulfonyl", whether used alone or linked to other terms such as alkylsulfonyl, denotes respectively divalent radicals-SO2-.
The terms"sulfamyl,""aminosulfonyl"and "sulfonamidyl,"denotes a sulfonyl radical substituted with an amine radical, forming a sulfonamide (-S02NH2).
The term"alkylaminosulfonyl"includes"N alkylaminosulfonyl"where sulfamyl radicals are independently substituted with one or two alkyl radical (s).
More preferred alkylaminosulfonyl radicals are"lower alkylaminosulfonyl"radicals having one to six carbon atoms.
Even more preferred are lower alkylaminosulfonyl radicals having one to three carbon atoms. Examples of such lower alkylaminosulfonyl radicals include N-methylaminosulfonyl, and N-ethylaminosulfonyl.
The terms"carboxy"or"carboxyl", whether used alone or with other terms, such as"carboxyalkyl", denotes-CO2H.
The term"carbonyl", whether used alone or with other terms, such as"aminocarbonyl", denotes- (C=0)-.
The term"aminocarbonyl"denotes an amide group of the formula-C (=O) NH2.
The terms"N-alkylaminocarbonyl"and"N, Ndialkylaminocarbonyl"denote aminocarbonyl radicals independently substituted with one or two alkyl radicals, respectively. More preferred are"lower alkylaminocarbonyl" having lower alkyl radicals as described above attached to an aminocarbonyl radical.
The terms"N-arylaminocarbonyl"and"N-alkyl-N- arylaminocarbonyl"denote aminocarbonyl radicals substituted, respectively, with one aryl radical, or one alkyl and one aryl radical.
The term"heterocyclylcarbonylalkyl"denotes alkyl groups which have been substituted with a heterocyclylcarbonyl radical. More preferred are contain 4-6 membered heterocyclyl groups and C1-C6-alkyl radicals, such as 4-methylpiperazinylcarbonylethyl.
The term"heterocyclylalkylcarbonyl"denotes carbonyl groups which have been substituted with a heterocyclylalkyl radical. More preferred are contain 4-6 membered heterocyclyl groups and C1-C6-alkyl radicals, such as piperidinylmethylcarbonyl.
The term"alkoxycarbonylaminoalkyl"denotes an aminoalkyl group, which is substituted with an alkoxycarbonyl radical. More preferred are"lower alkoxycarbonylaminoalkyl"having C1-C6-alkyl radicals.
The term"heterocyclylalkylenyl"embraces heterocyclic-substituted alkyl radicals. More preferred heterocyclylalkylenyl radicals are"5-or 6-membered heteroarylalkylenyl"radicals having alkyl portions of one to six carbon atoms and a 5-or 6-membered heteroaryl radical. Even more preferred are lower heteroarylalkylenyl radicals having alkyl portions of one to four carbon atoms.
Examples include such radicals as pyridylmethyl and thienylmethyl.
The term"aralkyl"embraces aryl-substituted alkyl radicals. Preferable aralkyl radicals are"lower aralkyl" radicals having aryl radicals attached to alkyl radicals having one to six carbon atoms. Even more preferred are "phenylalkylenyl"attached to alkyl portions having one to three carbon atoms. Examples of such radicals include benzyl, diphenylmethyl and phenylethyl. The aryl in said aralkyl may be additionally substituted with halo, alkyl, alkoxy, haloalkyl and haloalkoxy.
The term"alkylthio"embraces radicals containing a linear or branched alkyl radical, of one to ten carbon atoms, attached to a divalent sulfur atom. Even more preferred are lower alkylthio radicals having one to three carbon atoms. An example of"alkylthio"is methylthio, (CH3S-).
The term"haloalkylthio"embraces radicals containing a haloalkyl radical, of one to ten carbon atoms, attached to a divalent sulfur atom. Even more preferred are lower haloalkylthio radicals having one to three carbon atoms. An example of"haloalkylthio"is trifluoromethylthio.
The term"alkylamino"embraces"N-alkylamino"and "N, N-dialkylamino" where amino groups are independently substituted with one alkyl radical and with two alkyl radicals, respectively. More preferred alkylamino radicals are"lower alkylamino"radicals having one or two alkyl radicals of one to six carbon atoms, attached to a nitrogen atom. Even more preferred are lower alkylamino radicals having one to three carbon atoms. Suitable alkylamino radicals may be mono or dialkylamino such as N-methylamino, N-ethylamino, N, N-dimethylamino, N, N-diethylamino and the like.
The term"arylamino"denotes amino groups which have been substituted with one or two aryl radicals, such as Nphenylamino. The arylamino radicals may be further substituted on the aryl ring portion of the radical.
The term"heteroarylamino"denotes amino groups which have been substituted with one or two heteroaryl radicals, such as N-thienylamino. The"heteroarylamino"radicals may be further substituted on the heteroaryl ring portion of the radical.
The term"aralkylamino"denotes amino groups which have been independently substituted with one or two aralkyl radicals. More preferred are phenyl-C1-C3-alkylamino radicals, such as N-benzylamino. The aralkylamino radicals may be further substituted on the aryl ring portion.
The terms"N-alkyl-N-arylamino"and"N-aralkyl-Nalkylamino"denote amino groups which are independently substituted with one aralkyl and one alkyl radical, or one aryl and one alkyl radical, respectively, to an amino group.
The term"aminoalkyl"embraces linear or branched alkyl radicals having one to about ten carbon atoms any one of which may be substituted with one or more amino radicals.
More preferred aminoalkyl radicals are"lower aminoalkyl" radicals having one to six carbon atoms and one or more amino radicals. Examples of such radicals include aminomethyl, aminoethyl, aminopropyl, aminobutyl and aminohexyl. Even more preferred are lower aminoalkyl radicals having one to three carbon atoms.
The term"alkylaminoalkyl"embraces alkyl radicals substituted with alkylamino radicals. More preferred alkylaminoalkyl radicals are"lower alkylaminoalkyl" radicals having alkyl radicals of one to six carbon atoms.
Even more preferred are lower alkylaminoalkyl radicals having alkyl radicals of one to three carbon atoms. Suitable alkylaminoalkyl radicals may be mono or dialkyl substituted, such as N-methylaminomethyl, N, N-dimethyl-aminoethyl, N, Ndiethylaminomethyl and the like.
The term"alkylaminoalkoxy"embraces alkoxy radicals substituted with alkylamino radicals. More preferred alkylaminoalkoxy radicals are"lower alkylaminoalkoxy" radicals having alkoxy radicals of one to six carbon atoms.
Even more preferred are lower alkylaminoalkoxy radicals having alkyl radicals of one to three carbon atoms. Suitable alkylaminoalkoxy radicals may be mono or dialkyl substituted, such as N-methylaminoethoxy, N, Ndimethylaminoethoxy, N, N-diethylaminoethoxy and the like.
The term"alkylaminoalkoxyalkoxy"embraces alkoxy radicals substituted with alkylaminoalkoxy radicals. More preferred alkylaminoalkoxyalkoxy radicals are"lower alkylaminoalkoxyalkoxy"radicals having alkoxy radicals of one to six carbon atoms. Even more preferred are lower alkylaminoalkoxyalkoxy radicals having alkyl radicals of one to three carbon atoms. Suitable alkylaminoalkoxyalkoxy radicals may be mono or dialkyl substituted, such as Nmethylaminoethoxyethoxy, N-methylaminomethoxyethoxy, N, Ndimethylaminoethoxyethoxy, N, N-diethylaminomethoxymethoxy and the like.
The term''carboxyalkyl'l embraces linear or branched alkyl radicals having one to about ten carbon atoms any one of which may be substituted with one or more carboxy radicals. More preferred carboxyalkyl radicals are"lower carboxyalkyl"radicals having one to six carbon atoms and one carboxy radical. Examples of such radicals include carboxymethyl, carboxypropyl, and the like. Even more preferred are lower carboxyalkyl radicals having one to three CH2 groups.
The term"halosulfonyl"embraces sulfonyl radicals substituted with a halogen radical. Examples of such halosulfonyl radicals include chlorosulfonyl and fluorosulfonyl.
The term"arylthio"embraces aryl radicals of six to ten carbon atoms, attached to a divalent sulfur atom. An example of"arylthio"is phenylthio.
The term"aralkylthio"embraces aralkyl radicals as described above, attached to a divalent sulfur atom. More preferred are phenyl-C1-C3-alkylthio radicals. An example of "aralkylthio"is benzylthio.
The term"aryloxy"embraces optionally substituted aryl radicals, as defined above, attached to an oxygen atom.
Examples of such radicals include phenoxy.
The term"aralkoxy"embraces oxy-containing aralkyl radicals attached through an oxygen atom to other radicals.
More preferred aralkoxy radicals are"lower aralkoxy" radicals having optionally substituted phenyl radicals attached to lower alkoxy radical as described above.
The term"heteroaryloxy"embraces optionally substituted heteroaryl radicals, as defined above, attached to an oxygen atom.
The term"heteroarylalkoxy"embraces oxy-containing heteroarylalkyl radicals attached through an oxygen atom to other radicals. More preferred heteroarylalkoxy radicals are "lower heteroarylalkoxy"radicals having optionally substituted heteroaryl radicals attached to lower alkoxy radical as described above.
The term"cycloalkyl"includes saturated carbocyclic groups. Preferred cycloalkyl groups include C3-C6 rings.
More preferred compounds include, cyclopentyl, cyclopropyl, and cyclohexyl.
The term"cycloalkylalkyl"embraces cycloalkylsubstituted alkyl radicals. Preferable cycloalkylalkyl radicals are"lower cycloalkylalkyl"radicals having C3-6 cycloalkyl radicals attached to alkyl radicals having one to six carbon atoms.
The term"cycloalkenyl"includes carbocyclic groups having one or more carbon-carbon double bonds including "cycloalkyldienyl"compounds. Preferred cycloalkenyl groups include C3-C6 rings. More preferred compounds include, for example, cyclopentenyl, cyclopentadienyl, cyclohexenyl and cycloheptadienyl.
The term"comprising"is meant to be open ended, including the indicated component but not excluding other elements.
The term"Formulas 1-111"includes formula II'.
The compounds of the invention are endowed with kinase inhibitory activity, such as KDR inhibitory activity.
The present invention also comprises the use of a compound of the invention, or pharmaceutically acceptable salt thereof, in the manufacture of a medicament for the treatment either acutely or chronically of an angiogenesis mediated disease state, including those described previously. The compounds of the present invention are useful in the manufacture of an anti-cancer medicament. The compounds of the present invention are also useful in the manufacture of a medicament to attenuate or prevent disorders through inhibition of KDR.
The present invention comprises a pharmaceutical composition comprising a therapeutically-effective amount of a compound of Formulas I-III in association with a least one pharmaceutically-acceptable carrier, adjuvant or diluent.
The present invention also comprises a method of treating angiogenesis related disorders in a subject having or susceptible to such disorder, the method comprising treating the subject with a therapeutically-effective amount of a compound of Formula I
EMI53.1
wherein each of A1 and A2 is independently C or N; wherein A1-A2 form part of a ring A selected from 5-or 6 membered heteroaryl; wherein X is
EMI53.2
wherein Z is oxygen or sulfur;
Y is selected from
EMI54.1
EMI54.2
wherein p is 0 to 2, wherein Ra and Rb are independently selected from H, halo, cyano,-NHR6 and -alkyl substituted with Ru, or wherein
Ra and Rb together form C3-C6 cycloalkyl ;
wherein RZ is selected from C2-C6-alkylenyl, where one of the
CH2 groups may be replaced with an oxygen atom or an-NH ; wherein one of the CH2 groups may be substituted with one or two radicals selected from halo, cyano,-NHR6 and -alkyl substituted with Rl ; wherein Rdis cycloalkyl ;
wherein R1 is one or more substituents independently selected from H, halo, -OR7, oxo, -SR7, -CO2R7, -COR7,
CONR7R7, -NR7R7, -SO2NR7R7, -NR7(O)OR7, -NR7C(O)R7, NR7C (O) NR7R7, cycloalkyl, optionally substituted phenylalkylenyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted heteroarylalkylenyl, optionally substituted phenyl, lower alkyl, cyano, lower hydroxyalkyl, lower carboxyalkyl, nitro, lower alkenyl, lower alkynyl, lower aminoalkyl, lower alkylaminoalkyl and lower haloalkyl ;
wherein R2 is selected from a) substituted or unsubstituted 6-10 membered aryl, b) substituted or unsubstituted 5-6 membered heterocyclyl, c) substituted or unsubstituted 9-14 membered bicyclic or tricyclic heterocyclyl, d) cycloalkyl, and e) cycloalkenyl, wherein substituted R2 is substituted with one or more substituents independently selected from halo,-OR7,-
SR7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -NH(C1-C4 akylenylR9), -SO2R7, -SO2NR7R7, -NR7C(O)OR7, -NR7C(O)R7, optionally substituted cycloalkyl, optionally substituted 5-6 membered heterocyclyl, optionally substituted phenyl, halosulfonyl, cyano, alkylaminoalkoxy, alkylaminoalkoxyalkoxy, nitro, lower alkyl substituted with R1, lower alkenyl substituted with R1,
and lower alkynyl substituted with R1 ; wherein R3 is selected from aryl substituted with one or more substituents independently selected from halo, -OR7, -SR7, SO2R7, -CO2R7, -CONR7R7, -COR7, -NR7R7, -SO2NR7R7, NR'C (0) OR7, -NR7C (O) R, cycloalkyl, optionally substituted
5-6 membered heterocyclyl, optionally substituted phenyl, nitro, alkylaminoalkoxyalkoxy, cyano, alkylaminoalkoxy, lower alkyl substituted with R1, lower alkenyl substituted with R1, and lower alkynyl substituted with
R1;
wherein R4 is selected from a direct bond, C2 4-alkylenyl, C2
4-alkenylenyl and C2-4-alkynylenyl, where one of the CH2 groups may be substituted with an oxygen atom or an-NH-, wherein R4 is optionally substituted with hydroxy; wherein Rs is selected from H, lower alkyl, phenyl and lower aralkyl ; wherein R5a is selected from H, lower alkyl, phenyl and lower aralkyl ; wherein R6 is selected from H or C16-alkyl ; and wherein R7 is selected from H, lower alkyl, phenyl, 5-6 membered heterocyclyl, C3-C6-cycloalkyl, phenylalkyl, 5-6 membered heterocyclylalkyl, C3-C6 cycloalkylalkyl, and lower haloalkyl ; wherein R9 is selected from H, phenyl, 5-6 membered heterocyclyl and C3-C6 cycloalkyl.
COMBINATIONS
While the compounds of the invention can be administered as the sole active pharmaceutical agent, they can also be used in combination with one or more compounds of the invention or other agents. When administered as a combination, the therapeutic agents can be formulated as separate compositions that are administered at the same time or sequentially at different times, or the therapeutic agents can be given as a single composition.
The phrase"co-therapy" (or"combination-therapy"), in defining use of a compound of the present invention and another pharmaceutical agent, is intended to embrace administration of each agent in a sequential manner in a regimen that will provide beneficial effects of the drug combination, and is intended as well to embrace coadministration of these agents in a substantially simultaneous manner, such as in a single capsule having a fixed ratio of these active agents or in multiple, separate capsules for each agent.
Specifically, the administration of compounds of the present invention may be in conjunction with additional therapies known to those skilled in the art in the prevention or treatment of neoplasia, such as with radiation therapy or with cytostatic or cytotoxic agents.
If formulated as a fixed dose, such combination products employ the compounds of this invention within the accepted dosage ranges. Compounds of Formulas I-III may also be administered sequentially with known anticancer or cytotoxic agents when a combination formulation is inappropriate. The invention is not limited in the sequence of administration; compounds of the invention may be administered either prior to, simultaneous with, or after administration of the known anticancer or cytotoxic agent.
Currently, standard treatment of primary tumors consists of surgical excision followed by either radiation or IV administered chemotherapy. The typical chemotherapy regime consists of either DNA alkylating agents, DNA intercalating agents, CDK inhibitors, or microtubule poisons. The chemotherapy doses used are just below the maximal tolerated dose and therefore dose limiting toxicities typically include, nausea, vomiting, diarrhea, hair loss, neutropenia and the like.
There are large numbers of antineoplastic agents available in commercial use, in clinical evaluation and in pre-clinical development, which would be selected for treatment of neoplasia by combination drug chemotherapy.
Such antineoplastic agents fall into several major categories, namely, antibiotic-type agents, alkylating agents, antimetabolite agents, hormonal agents, immunological agents, interferon-type agents and a category of miscellaneous agents.
A first family of antineoplastic agents which may be used in combination with compounds of the present invention consists of antimetabolite-type/thymidilate synthase inhibitor antineoplastic agents. Suitable antimetabolite antineoplastic agents may be selected from but not limited to the group consisting of 5-FU-fibrinogen, acanthifolic acid, aminothiadiazole, brequinar sodium, carmofur, Ciba
Geigy CGP-30694, cyclopentyl cytosine, cytarabine phosphate stearate, cytarabine conjugates, Lilly DATHF, Merrel Dow
DDFC, dezaguanine, dideoxycytidine, dideoxyguanosine, didox,
Yoshitomi DMDC, doxifluridine, Wellcome EHNA, Merck & Co.
EX-015, fazarabine, floxuridine, fludarabine phosphate, 5fluorouracil, N- (2'-furanidyl)-5-fluorouracil, Daiichi
Seiyaku FO-152, isopropyl pyrrolizine, Lilly LY-188011,
Lilly LY-264618, methobenzaprim, methotrexate, Wellcome
MZPES, norspermidine, NCI NSC-127716, NCI NSC-264880, NCI
NSC-39661, NCI NSC-612567, Warner-Lambert PALA, pentostatin, piritrexim, plicamycin, Asahi Chemical PL-AC, Takeda TAC788, thioguanine, tiazofurin, Erbamont TIF, trimetrexate, tyrosine kinase inhibitors, Taiho UFT and uricytin.
A second family of antineoplastic agents which may be used in combination with compounds of the present invention consists of alkylating-type antineoplastic agents. Suitable alkylating-type antineoplastic agents may be selected from but not limited to the group consisting of Shionogi 254-S, aldo-phosphamide analogues, altretamine, anaxirone,
Boehringer Mannheim BBR-2207, bestrabucil, budotitane,
Wakunaga CA-102, carboplatin, carmustine, Chinoin-139,
Chinoin-153, chlorambucil, cisplatin, cyclophosphamide,
American Cyanamid CL-286558, Sanofi CY-233, cyplatate,
Degussa D-19-384, Sumimoto DACHP (Myr) 2, diphenylspiromustine, diplatinum cytostatic, Erba distamycin derivatives, Chugai DWA-2114R, ITI E09, elmustine, Erbamont
FCE-24517, estramustine phosphate sodium, fotemustine,
Unimed G-6-M, Chinoin GYKI-17230,
hepsul-fam, ifosfamide, iproplatin, lomustine, mafosfamide, mitolactol, Nippon
Kayaku NK-121, NCI NSC-264395, NCI NSC-342215, oxaliplatin,
Upjohn PCNU, prednimustine, Proter PTT-119, ranimustine, semustine, SmithKline SK & F-101772, Yakult Honsha SN-22, spiromus-tine, Tanabe Seiyaku TA-077, tauromustine, temozolomide, teroxirone, tetraplatin and trimelamol.
A third family of antineoplastic agents which may be used in combination with compounds of the present invention consists of antibiotic-type antineoplastic agents. Suitable antibiotic-type antineoplastic agents may be selected from but not limited to the group consisting of Taiho 4181-A, aclarubicin, actinomycin D, actinoplanone, Erbamont ADR-456, aeroplysinin derivative, Ajinomoto AN-201-II, Ajinomoto AN3, Nippon Soda anisomycins, anthracycline, azino-mycin-A, bisucaberin, Bristol-Myers BL-6859, Bristol-Myers BMY-25067,
Bristol-Myers BMY-25551, Bristol-Myers BMY-26605, Bristol
Myers BMY-27557, Bristol-Myers BMY-28438, bleomycin sulfate, bryostatin-1, Taiho C-1027, calichemycin, chromoximycin, dactinomycin, daunorubicin, Kyowa Hakko DC-102, Kyowa Hakko
DC-79, Kyowa Hakko DC-88A,
Kyowa Hakko DC89-Al, Kyowa Hakko
DC92-B, ditrisarubicin B, Shionogi DOB-41, doxorubicin, doxorubicin-fibrinogen, elsamicin-A, epirubicin, erbstatin, esorubicin, esperamicin-A1, esperamicin-Alb, Erbamont FCE21954, Fujisawa FK-973, fostriecin, Fujisawa FR-900482, glidobactin, gregatin-A, grincamycin, herbimycin, idarubicin, illudins, kazusamycin, kesarirhodins, Kyowa
Hakko KM-5539, Kirin Brewery KRN-8602, Kyowa Hakko KT-5432,
Kyowa Hakko KT-5594, Kyowa Hakko KT-6149, American Cyanamid
LL-D49194, Meiji Seika ME 2303, menogaril, mitomycin, mitoxantrone, SmithKline M-TAG, neoenactin, Nippon Kayaku
NK-313, Nippon Kayaku NKT-01, SRI International NSC-357704, oxalysine, oxaunomycin, peplomycin, pilatin, pirarubicin, porothramycin, pyrindanycin A, Tobishi RA-I,
rapamycin, rhizoxin, rodorubicin, sibanomicin, siwenmycin, Sumitomo SM5887, Snow Brand SN-706, Snow Brand SN-07, sorangicin-A, sparsomycin, SS Pharmaceutical SS-21020, SS Pharmaceutical
SS-7313B, SS Pharmaceutical SS-9816B, steffimycin B, Taiho 4181-2, talisomycin, Takeda TAN-868A, terpentecin, thrazine, tricrozarin A, Upjohn U-73975, Kyowa Hakko UCN-10028A,
Fujisawa WF-3405, Yoshitomi Y-25024 and zorubicin.
A fourth family of antineoplastic agents which may be used in combination with compounds of the present invention consists of a miscellaneous family of antineoplastic agents, including tubulin interacting agents, topoisomerase II inhibitors, topoisomerase I inhibitors and hormonal agents, selected from but not limited to the group consisting of a- carotene, a-difluoromethyl-arginine, acitretin, Biotec AD-5,
Kyorin AHC-52, alstonine, amonafide, amphethinile, amsacrine, Angiostat, ankinomycin, anti-neoplaston A10, antineoplaston A2, antineoplaston A3, antineoplaston A5, antineoplaston AS2-1, Henkel APD, aphidicolin glycinate, asparaginase, Avarol, baccharin, batracylin, benfluron, benzotript, Ipsen-Beaufour BIM-23015, bisantrene, Bristol
Myers BMY-40481, Vestar boron-10, bromofosfamide, Wellcome
BW-502,
Wellcome BW-773, caracemide, carmethizole hydrochloride, Ajinomoto CDAF, chlorsulfaquinoxalone, Chemes
CHX-2053, Chemex CHX-100, Warner-Lambert CI-921, Warner
Lambert CI-937, Warner-Lambert CI-941, Warner-Lambert CI- 958, clanfenur, claviridenone, ICN compound 1259, ICN compound 4711, Contracan, Yakult Honsha CPT-11, crisnatol, curaderm, cytochalasin B, cytarabine, cytocytin, Merz D-609,
DABIS maleate, dacarbazine, datelliptinium, didemnin-B, dihaematoporphyrin ether, dihydrolenperone, dinaline, distamycin, Toyo Pharmar DM-341, Toyo Pharmar DM-75, Daiichi
Seiyaku DN-9693, docetaxel elliprabin, elliptinium acetate,
Tsumura EPMTC, the epothilones, ergotamine, etoposide, etretinate, fenretinide, Fujisawa FR-57704, gallium nitrate, genkwadaphnin, Chugai GLA-43, Glaxo GR-63178,
grifolan NMF5N, hexadecylphosphocholine, Green Cross HO-221, homoharringtonine, hydroxyurea, BTG ICRF-187, ilmofosine, isoglutamine, isotretinoin, Otsuka JI-36, Ramot K-477,
Otsuak K-76COONa, Kureha Chemical K-AM, MECT Corp KI-8110,
American Cyanamid L-623, leukoregulin, lonidamine, Lundbeck LU-23-112, Lilly LY-186641, NCI (US) MAP, marycin, Merrel
Dow MDL-27048, Medco MEDR-340, merbarone, merocyanlne derivatives, methylanilinoacridine, Molecular Genetics MGI136, minactivin, mitonafide, mitoquidone mopidamol, motretinide, Zenyaku Kogyo MST-16, N- (retinoyl) amino acids,
Nisshin Flour Milling N-021, N-acylated-dehydroalanines, nafazatrom, Taisho NCU-190, nocodazole derivative,
Normosang, NCI NSC-145813, NCI NSC-361456, NCI NSC-604782,
NCI NSC-95580,
ocreotide, Ono ONO-112, oquizanocine, Akzo
Org-10172, paclitaxel, pancratistatin, pazelliptine, Warner
Lambert PD-111707, Warner-Lambert PD-115934, Warner-Lambert
PD-131141, Pierre Fabre PE-1001, ICRT peptide D, piroxantrone, polyhaematoporphyrin, polypreic acid, Efamol porphyrin, probimane, procarbazine, proglumide, Invitron protease nexin I, Tobishi RA-700, razoxane, Sapporo
Breweries RBS, restrictin-P, retelliptine, retinoic acid,
Rhone-Poulenc RP-49532, Rhone-Poulenc RP-56976, SmithKline
SK & F-104864, Sumitomo SM-108, Kuraray SMANCS, SeaPharm SP10094, spatol, spirocyclopropane derivatives, spirogermanium, Unimed, SS Pharmaceutical SS-554, strypoldinone, Stypoldione, Suntory SUN 0237, Suntory SUN 2071, superoxide dismutase,
Toyama T-506, Toyama T-680, taxol, Teijin TEI-0303, teniposide, thaliblastine, Eastman
Kodak TJB-29, tocotrienol, topotecan, Topostin, Teijin TT82, Kyowa Hakko UCN-01, Kyowa Hakko UCN-1028, ukrain,
Eastman Kodak USB-006, vinblastine sulfate, vincristine, vindesine, vinestramide, vinorelbine, vintriptol, vinzolidine, withanolides and Yamanouchi YM-534.
Alternatively, the present compounds may also be used in co-therapies with other anti-neoplastic agents, such as acemannan, aclarubicin, aldesleukin, alemtuzumab, alitretinoin, altretamine, amifostine, aminolevulinic acid, amrubicin, amsacrine, anagrelide, anastrozole, ANCER, ancestim, ARGLABIN, arsenic trioxide, BAM 002 (Novelos), bexarotene, bicalutamide, broxuridine, capecitabine, celmoleukin, cetrorelix, cladribine, clotrimazole, cytarabine ocfosfate, DA 3030 (Dong-A), daclizumab, denileukin diftitox, deslorelin, dexrazoxane, dilazep, docetaxel, docosanol, doxercalciferol, doxifluridine, doxorubicin, bromocriptine, carmustine, cytarabine, fluorouracil, HIT diclofenac, interferon alfa, daunorubicin, doxorubicin, tretinoin, edelfosine, edrecolomab, eflornithine, emitefur, epirubicin, epoetin beta, etoposide phosphate, exemestane,
exisulind, fadrozole, filgrastim, finasteride, fludarabine phosphate, formestane, fotemustine, gallium nitrate, gemcitabine, gemtuzumab zogamicin, gimeracil/oteracil/tegafur combination, glycopine, goserelin, heptaplatin, human chorionic gonadotropin, human fetal alpha fetoprotein, ibandronic acid, idarubicin, (imiquimod, interferon alfa, interferon alfa, natural, interferon alfa-2, interferon alfa-2a, interferon alfa-2b, interferon alfa-N1, interferon alfa-n3, interferon alfacon-1, interferon alpha, natural, interferon beta, interferon beta-la, interferon beta-lb, interferon gamma, natural interferon gamma-la, interferon gamma-lb, interleukin-1 beta, iobenguane, irinotecan, irsogladine, lanreotide, LC 9018 (Yakult), leflunomide, lenograstim,
lentinan sulfate, letrozole, leukocyte alpha interferon, leuprorelin, levamisole + fluorouracil, liarozole, lobaplatin, lonidamine, lovastatin, masoprocol, melarsoprol, metoclopramide, mifepristone, miltefosine, mirimostim, mismatched double stranded RNA, mitoguazone, mitolactol, mitoxantrone, molgramostim, nafarelin, naloxone + pentazocine, nartograstim, nedaplatin, nilutamide, noscapine, novel erythropoiesis stimulating protein, NSC 631570 octreotide, oprelvekin, osaterone, oxaliplatin, paclitaxel, pamidronic acid, pegaspargase, peginterferon alfa-2b, pentosan polysulfate sodium, pentostatin, picibanil, pirarubicin, rabbit antithymocyte polyclonal antibody, polyethylene glycol interferon alfa-2a, porfimer sodium, raloxifene, raltitrexed, rasburicase, rhenium Re 186 etidronate, RII retinamide, rituximab, romurtide,
samarium (153 Sm) lexidronam, sargramostim, sizofiran, sobuzoxane, sonermin, strontium-89 chloride, suramin, tasonermin, tazarotene, tegafur, temoporfin, temozolomide, teniposide, tetrachlorodecaoxide, thalidomide, thymalfasin, thyrotropin alfa, topotecan, toremifene, tositumomab-iodine 131, trastuzumab, treosulfan, tretinoin, trilostane, trimetrexate, triptorelin, tumor necrosis factor alpha, natural, ubenimex, bladder cancer vaccine, Maruyama vaccine, melanoma lysate vaccine, valrubicin, verteporfin, vinorelbine, VIRULIZIN, zinostatin stimalamer, or zoledronic acid ; abarelix;
AE 941 (Aeterna), ambamustine, antisense oligonucleotide, bcl-2 (Genta), APC 8015 (Dendreon), cetuximab, decitabine, dexaminoglutethimide, diaziquone, EL 532 (Elan), EM 800 (Endorecherche), eniluracil, etanidazole, fenretinide, filgrastim SD01 (Amgen), fulvestrant, galocitabine, gastrin 17 immunogen,
HLA-B7 gene therapy (Vical), granulocyte macrophage colony stimulating factor, histamine dihydrochloride, ibritumomab tiuxetan, ilomastat, IM 862 (Cytran), interleukin-2, iproxifene, LDI 200 (Milkhaus), leridistim, lintuzumab, CA 125 MAb (Biomira), cancer MAb (Japan Pharmaceutical
Development), HER-2 and Fc MAb (Medarex), idiotypic 105AD7
MAb (CRC Technology), idiotypic CEA MAb (Trilex),
LYM-1iodine 131 MAb (Techniclone), polymorphic epithelial mucinyttrium 90 MAb (Antisoma), marimastat, menogaril, mitumomab, motexafin gadolinium, MX 6 (Galderma), nelarabine, nolatrexed, P 30 protein, pegvisomant, pemetrexed, porfiromycin, prinomastat, RL 0903 (Shire), rubitecan, satraplatin, sodium phenylacetate, sparfosic acid, SRL 172 (SR Pharma), SU 5416 (SUGEN), TA 077 (Tanabe), tetrathiomolybdate, thaliblastine, thrombopoietin, tin ethyl etiopurpurin, tirapazamine, cancer vaccine (Biomira), melanoma vaccine (New York
University), melanoma vaccine (Sloan Kettering Institute), melanoma oncolysate vaccine (New York Medical College), viral melanoma cell lysates vaccine (Royal Newcastle
Hospital), or valspodar.
Alternatively, the present compounds may also be used in co-therapies with other anti-neoplastic agents, such as other kinase inhibitors including p38 inhibitors and CDK inhibitors, TNF inhibitors, metallomatrix proteases inhibitors (MMP), COX-2 inhibitors including celecoxib, rofecoxib, parecoxib, valdecoxib, and etoricoxib, NSAID's,
SOD mimics or ocL, a3 inhibitors.
The present invention comprises processes for the preparation of a compound of Formulas I-III.
Also included in the family of compounds of Formulas I-III are the pharmaceutically-acceptable salts thereof. The term"pharmaceutically-acceptable salts"embraces salts commonly used to form alkali metal salts and to form addition salts of free acids or free bases. The nature of the salt is not critical, provided that it is pharmaceutically-acceptable. Suitable pharmaceuticallyacceptable acid addition salts of compounds of Formulas I
III may be prepared from an inorganic acid or from an organic acid. Examples of such inorganic acids are hydrochloric, hydrobromic, hydroiodic, nitric, carbonic, sulfuric and phosphoric acid.
Appropriate organic acids may be selected from aliphatic, cycloaliphatic, aromatic, arylaliphatic, heterocyclic, carboxylic and sulfonic classes of organic acids, example of which are formic, acetic, adipic, butyric, propionic, succinic, glycolic, gluconic, lactic, malic, tartaric, citric, ascorbic, glucuronic, maleic, fumaric, pyruvic, aspartic, glutamic, benzoic, anthranilic, mesylic, 4-hydroxybenzoic, phenylacetic, mandelic, embonic (pamoic), methanesulfonic, ethanesulfonic, ethanedisulfonic, benzenesulfonic, pantothenic, 2hydroxyethanesulfonic, toluenesulfonic, sulfanilic, cyclohexylaminosulfonic, camphoric, camphorsulfonic, digluconic, cyclopentanepropionic, dodecylsulfonic, glucoheptanoic,
glycerophosphonic, heptanoic, hexanoic, 2hydroxy-ethanesulfonic, nicotinic, 2-naphthalenesulfonic, oxalic, palmoic, pectinic, persulfuric, 2-phenylpropionic, picric, pivalic propionic, succinic, tartaric, thiocyanic, mesylic, undecanoic, stearic, algenic, P-hydroxybutyric, salicylic, galactaric and galacturonic acid.
Suitable pharmaceutically-acceptable base addition salts of compounds of Formulas I-III include metallic salts, such as salts made from aluminum, calcium, lithium, magnesium, potassium, sodium and zinc, or salts made from organic bases including primary, secondary and tertiary amines, substituted amines including cyclic amines, such as caffeine, arginine, diethylamine, N-ethyl piperidine, aistidine, glucamin, isopropylamine, lysine, morpholine, N-ethyl morpholine, piperazine, piperidine, triethylamine, trimethylamine. All of these salts may be prepared by conventional means from the corresponding compound of the invention by reacting, for example, the appropriate acid or base with the compound of
Formulas I-III.
Also, the basic nitrogen-containing groups can be quaternized with such agents as lower alkyl halides, such as methyl, ethyl, propyl, and butyl chloride, bromides and iodides; dialkyl sulfates like dimethyl, diethyl, dibutyl, and'diamyl sulfates, long chain halides such as decyl, lauryl, myristyl and stearyl chlorides, bromides and iodides, aralkyl halides like benzyl and phenethyl bromides, and others. Water or oil-soluble or dispersible products are thereby obtained.
Examples of acids that may be employed to form pharmaceutically acceptable acid addition salts include such inorganic acids as hydrochloric acid, sulphuric acid and phosphoric acid and such organic acids as oxalic acid, maleic acid, succinic acid and citric acid. Other examples include salts with alkali metals or alkaline earth metals, such as sodium, potassium, calcium or magnesium or with organic bases. Preferred salts include hydrochloride, phosphate and edisylate.
Additional examples of such salts can be found in
Berge et al., J. Pharm. Sci., 66,1 (1977).
GENERAL SYNTHETIC PROCEDURES
The compounds of the invention can be synthesized according to the following procedures of Schemes 1-43, wherein the substituents are as defined for Formulas I-III, above, except where further noted.
Scheme 1
EMI67.1
Cyclic amides can be prepared according to the method set out in Scheme 1. The amino group of compound 1 (where R is alkyl, aryl, and the like) is protected, such as with
Boc anhydride, followed by treatment, to remove the ester, such as with base, forming the protected amine/free acid 2.
Alternatively, other amino protecting groups known in the art can be used. Substitued amines are coupled with the free acid, such as with EDC, to form the protected amine/amide 3. The protected amine moiety is removed, such as with acid, and reacted via one step reductive alkylation with carbonyl-containing compounds to form the 1-amido-2- substituted amino-compounds 4. Preferably the amination is in an alcohol, such as MeOH, EtOH or propanol, and at a temperature between about 0-50 C, such as RT. Aldehydes or ketones are preferred carbonyl-containing compounds.
Alternative carbonyl-containing compounds are, for example, bisulfite adducts or semiacetals, acetals, semiketals or ketals of compounds with alcohols, for example lower hydroxyalkyl compounds; or thioacetals or thioketals of compounds with mercaptans, for example lower alkylthio compounds. The reductive alkylation is preferably carried out with hydrogenation in the presence of a catalyst, such as platinum or especially palladium, which is preferably bonded to a carrier material, such as carbon, or a heavy metal catalyst, such as Raney nickel, at normal pressure or at pressures of from 0. 1 to 10 MegaPascal (MPa), or with reduction by means of complex hydrides, such as borohydrides, especially alkali metal cyanoborohydrides, for example sodium cyanoborohydride, in the presence of a suitable acid, preferably relatively weak acids,
such as lower alkylcarboxylic acids, especially acetic acid, or a sulfonic acid, such as p-toluenesulfonic acid; in customary solvents, for example alcohols, such as methanol or ethanol, or ethers, for example cyclic ethers, such as tetrahydrofuran, in the presence or absence of water.
Scheme 2
EMI69.1
Alternatively, compounds 4 can be prepared from mixed acid/amines 5 as shown in Scheme 2. Substituted amines are coupled with the mixed acid/amines 5 such as with a coupling reagent, for example EDC, to form the mixed amine/amide 6.
Substituted carbonyl compounds, such as acid halides, anhydrides, carboxylic acids, esters, ketones, aldehydes and the like, are added to the mixed amine/amide 6 followed with reduction to give the substituted amide/substituted amine compounds 4.
Scheme 3
EMI69.2
Imino compounds 7 can be formed from the mixed amine/amides 6, such as by reacting with a substituted carbonyl compound.
Scheme 4
EMI70.1
Substituted cyclic carboxamides can be prepared from the corresponding imino analogs by the process outlined in
Scheme 4. Treatment of the imino compound 7 with a reducing agent yields compound 4. Reagents which can be used to add hydrogen to an imine double bond include borane in THF,
LiAlH4, NaBH4, sodium in EtOH and hydrogen in the presence of a catalyst, among others.
Scheme 5
EMI71.1
Substituted carboxamides 4 can be prepared from the corresponding halo analogs 8 by the process outlined in
Scheme 5. Substituted amino acids 9 are prepared from the corresponding chloro compounds 8 such as by reacting with an amine at a suitable temperature, such as about 80 C. The acid 9 is coupled with an amine, preferably in the presence of a coupling agent such as EDC, to form the corresponding amide 4.
The amination process can be carried out as an Ullmann type reaction using a copper catalyst, such as copper [0] or a copper [I] compound such as copper [I] oxide, copper [I] bromide or copper [I] iodide in the presence of a suitable base (such as a metal carbonate, for example K2C03) to neutralize the acid generated in the reaction. This reaction is reviewed in Houben-Weyl"Methoden der
Organischen Chemie", Band 11/1, page 32-33,1958, in
Organic Reactions, 14, page 19-24, 1965 and by J. Lindley (1984) in Tetrahedron, 40, page 1433-1456. The amount of catalyst is typically in the range of 1 to 20 mole percent.
The reaction is carried out in an inert, aprotic solvent such as an ether (for example dimethoxyethane or dioxane) or an amide (for example dimethylformamide or N- methylpyrrolidone), under an inert atmosphere in the temperature range of 60-180 C.
An alternative amination process involves using a
Group VIII element, where the metal core of the catalyst should be a zero-valent transition metal, such as palladium or nickel, which has the ability to undergo oxidative addition to the aryl-halogen bond. The zero valent state of the metal may be generated in situ from the M [II] state. The catalyst complexes may include chelating ligands, such as alkyl, aryl or heteroaryl derivatives of phosphines or biphosphines, imines or arsines. Preferred catalysts contain palladium or nickel. Examples of such catalysts include palladium [II] chloride, palladium [II] acetate, tetrakis (triphenyl-phosphine) palladium [0] and nickel [II] acetylacetonate. The metal catalyst is typically in the range of 0.1 to 10 mole percent.
The chelating ligands may be either monodentate, as in the case for example of trialkyphosphines, such as tributylphosphine, triarylphosphines, such as tri- (ortho-tolyl) phosphine, and triheteroaryl phosphines, such as tri-2-furylphosphine; or they may be bidentate such as in the case of 2, 2'bis (diphenylphosphino)- 1, 1'binaphthyl, 1,2bis (diphenylphosphino) ethane, 1,1'bis (diphenylphosphino) ferrocene and 1- (N, N-dimethyl-amino)- l'- (dicyclohexylphosphino) biphenyl. The supporting ligand may be complexed to the metal center in the form of a metal complex prior to being added to the reaction mixture or may be added to the reaction mixture as a separate compound. The supporting ligand is typically present in the range 0.01 to 20 mole percent.
It is often necessary to add a suitable base to the reaction mixture, such as a trialkylamine (for example DIEA or 1, 5-diazabicyclo [5,4,0] undec-5-ene), a Group
I alkali metal alkoxide (for example potassium tertbutoxid) or carbonate (for example cesium carbonate) or potassium phosphate. The reaction is typically carried out in an inert aprotic solvent such as an ether (for example dimethoxyethane or dioxane) or an amide (for example DMF or N-methylpyrrolidone), under an inert atmosphere in the temperature range of 60-180 C.
The amination is preferably carried out in an inert, aprotic, preferably anhydrous, solvent or solvent mixture, for example in a carboxylic acid amide, for example dimethylformamide or dimethylacetamide, a cyclic ether, for example THF or dioxane, or a nitrile, for example CH3CN, or in a mixture thereof, at an appropriate temperature, for example in a temperature range of from about 40 C to about 180 C, and if necessary under an inert gas atmosphere, for example a nitrogen or argon atmosphere.
Scheme 6
EMI73.1
Substituted carboxamides 4 can be prepared from the corresponding halo analogs 8 by the process outlined in
Scheme 6. The chloro acid 8 is coupled with an amine, preferably in the presence of a coupling agent such as EDC, to form the corresponding chloro amide 10. Substituted amino-amides 4 are prepared from the corresponding chloro compounds 10 such as by reacting with an amine at a suitable temperature, such as about 80 C. The amination reaction can be run in the presence of an appropriate catalyst such as a palladium catalyst, in the presence of an aprotic base such as sodium t-butoxide or cesium carbonate, or a nickel catalyst, or a copper catalyst.
Scheme 7
EMI74.1
Substituted carboxamides 4 can be prepared from the corresponding bromo/chloro analogs 11 by the process outlined in Scheme 7. The bromo/chloro acid 11 is coupled with an amine, preferably in the presence of a coupling agent such as EDC, to form the corresponding bromo substituted amide 12. Suzuki coupling with the bromo amide 12 and suitable boronic acids provides the substituted amide 10. Substituted amino-amides 4 are prepared from the corresponding chloro compounds 10 as described in Scheme 6.
Scheme 8
EMI75.1
Substituted pyridines can be prepared such as by the method found in Scheme 8.2-Aminonicotinic acid 13 is coupled with a substituted amine at a suitable temperature, nonprotic solvent such as CH2C12, such as with EDC and HOBt, to form the nicotinamide 14. The nicotinamide 14 is reductively alkylated such as with substituted 4benzaldehydes and NaBH (OAc) 3, to yield the 2-substituted amino-pyridyl carboxamides 15.
Scheme 9
EMI76.1
Substituted pyridines may be prepared by the method found in Scheme 9.2-Chloro-nicotinic acid 16 (where LG is
OH) is coupled with an amine at a suitable temperature, such as a temperature over about 100 C to give the 2-substituted amino-nicotinic acid 17. The 2-substituted amino-nicotinic acid 17 is reacted with a substituted amine in the presence of a coupling reagent, such as BOP-C1 and base, such as TEA to form the 2-substituted amino-nicotinamide 15.
Alternatively, 2-chloro-nicotinoyl chloride (LG is Cl) is coupled first with R2-NH2, such as in the presence of base, e. g., NaHC03, in a suitable solvent, such as CH2Cl2, to form the amide 16A, then coupled with a benzylamine to yield the 2-substituted amino-nicotinamide 15.
Scheme 10
EMI77.1
Imino-substituted pyridines may be prepared by the method found in Scheme 10. (2-Amino- (4-pyridyl))carboxamide 18 is reacted with substituted 4-benzaldehydes, such as in the presence of p-toluenesulfonic acid monohydrate to yield the imino compound 19.
Scheme 11
EMI77.2
Substituted pyridines alternatively may be prepared by the method found in Scheme 11. The imino compound 19 is reduced, such as with NaBH4, to form the substituted amine 20.
Scheme 12
EMI78.1
Substituted pyridines can be prepared by the process outlined in Scheme 12. A solution of sodium hypobromite is freshly prepared and added to 2-hydroxynicotinic acid 21 and heated, preferably at a temperature at about 50 C.
*Additional hypobromite solution may be needed to form the bromo compound 22. The 5-bromo-2-hydroxynicotinic acid 22 is reacted with thionyl chloride, preferably at a temperature > RT, more preferably at about 80 C to form the 2-chloro-nicotinic acid analog 23. The acid is coupled with an amine, preferably in the presence of EDC, HOBT, and DIEA to form the corresponding substituted amide 24. Suzuki coupling with the bromo amide and suitable boronic acids, provides the substituted nicotinamide 25.2-Aminonicotinamides 26 are prepared from the corresponding chloro compounds 25 such as by reacting with substituted amines at a suitable temperature, such as about 80 C.
Scheme 13
EMI79.1
Alternatively, sulfonamides 27 can be prepared from amines 6 as shown in Scheme 13. Substituted sulfonyl compounds, such as sulfonyl halides, preferably chloro or bromo, sulfonic acids, an activated ester or reactive anhydride, or in the form of a cyclic amide, and the like, are added to the amine 6 to give the sulfonamide compounds 27.
The reaction is carried out in a suitable solvent, such as CH2Cl2, at a temperature between about RT to about the reflux temperature of the solvent, in the presence of a suitable base, such as DIEA or DMAP.
The amino group of compounds 6 is preferably in free form, especially when the sulfonyl group reacting therewith is present in reactive form. The amino group may, however, itself be a derivative, for example by reaction with a phosphite, such as diethylchlorophosphite, 1,2-phenylene chlorophosphite, ethyldichlorophosphite, ethylene chlorophosphite or tetraethylpyrophosphite. A derivative of such a compound having an amino group also can be a carbamic acid halide or an isocyanate.
The condensation of activated sulfonic esters, reactive anhydrides or reactive cyclic amides with the corresponding amines is customarily carried out in the presence of an inorganic base, such as an alkaline metal hydrogen carbonate of carbonate, or especially an organic base, for example simple lower (alkyl) 3-amines, for example
TEA or tributylamine, or one of the above-mentioned organic bases. If desired, a condensation agent is additionally used, for example as described for free carboxylic acids.
The condensation is preferably carried out in an inert, aprotic, preferably anhydrous, solvent or solvent mixture, for example in a carboxylic acid amide, for example formamide or DMF, a halogenated hydrocarbon, for example CH2Cl2, CCl4 or chlorobenzene, a ketone, for example acetone, a cyclic ether, for example THF or dioxane, an ester, for example EtOAc, or a nitrile, for example CH3CN, or in a mixture thereof, as appropriate at reduced or elevated temperature, for example in a temperature range of from about-40 C to about 100 C, preferably from about-10 C to about 70 C, and when arylsulfonyl esters are used also at temperatures of from about 10-30 C, and if necessary under an inert gas atmosphere,
for example a nitrogen or argon atmosphere.
Alcoholic solvents, for example EtOH, or aromatic solvents, for example benzene or toluene, may also be used.
When alkali metal hydroxides are present as bases, acetone may also be added where appropriate.
Scheme 14
EMI81.1
<tb> <SEP> 2
<tb> F <SEP> CO <SEP> H <SEP> R2 <SEP> HN <SEP> R
<tb> <SEP> NHZ
<tb> Cl <SEP> N <SEP> Cl <SEP>
<tb> <SEP> HOBt/EDAC/DIEA/DMFCl
<tb> <SEP> 28 <SEP> RT <SEP> 29 <SEP> H <SEP> N
<tb> <SEP> \ <SEP> ruz
<tb> <SEP> R3
<tb> <SEP> pyridine,A <SEP> \ <SEP> R3
<tb> <SEP> zu
<tb> <SEP> /R2
<tb> <SEP> HN
<tb> <SEP> HNR2 <SEP> ov0
<tb> <SEP> F <SEP> \ <SEP> 0
<tb> <SEP> HZ, <SEP> Pd/C <SEP> C1 <SEP> N <SEP> NH
<tb> <SEP> i <SEP> E
<tb> <SEP> EtOH, <SEP> TEA <SEP> R
<tb> <SEP> R3
<tb> <SEP> 30
<tb> <SEP> 31
<tb>
Substituted pyridines can be prepared by the process outlined in Scheme 14. 2-Chloronicotinic acid 28 and substituted amine are coupled under conditions similar to that described in the previous schemes to give the amide 29.
6-Chloro-2-aminopyridines 30 are prepared from the amide 29, such as by reacting with substituted amines at a suitable temperature, such as above about 80 C, preferably above about 100 C, more preferably at about 130 C, neat. 6
Chloro-2-aminopyridines 30 are de-chlorinated such as by hydrogenation, for example by treatment with H2 in the presence of Pd/C, to yield other compounds of the present invention 31.
Scheme 15
EMI82.1
36 35
1,2,3,6-Tetrahydro-pyridyl substituted anilines (where Rx is a substituent selected from those available for substituted R2) are prepared such as by the procedure described in Scheme 15. Nitrobenzenes 32 are brominated, such as with bromine in the presence of acid, H2SO4 for example, or with NBS to yield the 3-bromo derivative 33.
Suzuki coupling of the bromo-derivative 33 and a substituted pyridylboronic acid, such as at a temperature above RT, preferably above about 50 C, and more preferably at about 80 C, yields the pyridyl derivative 34. Alkylation of the nitrophenyl-pyridine 34, such as by treatment with iodomethane, preferably above about 50 C, and more preferably at about 80 C, yields the pyridinium compound 35, which upon reduction, such as by NaBH4, yields the tetrahydyropyridine 36.
Scheme 16
EMI83.1
38
37
6-Amino substituted pyridines are prepared such as by the procedure described in Scheme 16. Similar to the method of Scheme 13, chloropyridine 37 and is reacted with an amine, preferably above about 50 C, and more preferably at about 80 C, to yield the 6-aminopyridines 38.
Scheme 17
EMI83.2
A series of substituted anilines are prepared such as by the procedure described in Scheme 17. A nitrobenzyl bromide 39 is coupled with morpholine, such as at a temperature at about RT, to yield the heterocyclylmethyl nitrobenzene derivative. Reduction of the nitro compound, such as with iron powder, preferably above about 50 C, and more preferably at about 80 C, yields the heterocyclylmethyl substituted aniline 40.
Protected alkylamine substituted anilines can be prepared from the nitro free amines 41, such as with standard protecting agents and chemistry known in the art, such as BOC chemistry. Reduction of the protected nitro compound, such as with iron powder, preferably above about 50 C, and more preferably at about 80 C, yields the aniline 42.
Sulfonamide substituted anilines can be prepared from nitrobenzenesulfonyl chlorides 43. Coupling of nitrobenzenesulfonyl chlorides 43 with reactive heterocyclic compounds, such as substituted piperazines, piperidines, and the like, in a protic solvent such as EtOH, such as at a temperature about RT, yields the nitrobenzenesulfonamides 43. Reduction of the nitro benzenesulfonamide, such as with iron powder, preferably above about 50 C, and more preferably at about 80 C, yields the aniline 44.
Scheme 18
EMI84.1
A series of perhaloalkyl-substituted anilines 47, where RY represents perhaloalkyl radicals, are prepared such as by the procedure described in Scheme 18.1-Nitro-4 (perfluoroethyl) benzene can be synthesized by the method described in the reference [John N. Freskos, Synthetic
Communications, 18 (9), 965-972 (1988)]. Alternatively, 1- Nitro-4- (perfluoroalkyl) benzene can be synthesized from the nitro compound, where LG is a leaving group, such as iodo, by the method described by W. A. Gregory, et al. [J. Med.
Chem., 1990, 33,2569-2578].
Reduction of the nitrobenzenes 46, such as with iron powder, at a temperature above about 50 C, and preferably at about 80 C, yields the aniline 47. Hydrogenation, such as with H2 atmosphere in the presence of catalyst, such as 10%
Pd/C, is also possible.
Scheme 19
EMI85.1
Additional series of substituted anilines (where Rx is a substituent selected those available for substituted R2)are prepared such as by the procedures described in Scheme 19.2-Alkoxy substituted anilines 50 are prepared from the corresponding phenol compounds 48 such as by the Mitsunobu reaction, including treatment with a N, N-dialkylethanolamine and PPh3 and DEAD to give the corresponding nitro compound 49, followed by hydrogenation, such as with H2 to give the aniline 50.
Alternatively, piperazinyl substituted anilines 53 can be prepared by the treatment of an aniline 51 with an Nsubstituted-bis (2-chloroethyl) amine, base, such as K2CO3 and
NaI, at a temperature above about 50 C, preferably above about 100 C, and more preferably at about 170 C, to give the piperazinylbenzene compound 52. Nitration, such as with H2SO4 and KN03, at a temperature above 0 C, and preferably at about RT, followed by hydrogenation, such as with H2 atmosphere gives the substituted aniline 53.
Alternatively, piperazinyl substituted anilines 56 can be prepared by the treatment of a fluoro-nitro-substituted aryl compounds 54. The fluoro-nitro-substituted aryl compounds 54 and 1-substituted piperazines are heated, preferably neat, at a temperature above about 50 C, and preferably at about 90 C, to yield the piperazinyl-nitroaryl compounds 55. Hydrogenation, such as with H2 atmosphere in the presence of a catalyst, such as 10% Pd/C, gives the substituted aniline 56.
Scheme 20
EMI86.1
Substituted indolines are prepared such as by the procedures described in Scheme 20. Substituted aminoindolines 59 are prepared from the nitroindoline 57 and a ketone in the presence of NaHB (OAc) 3 to form the 1- substituted indoline 58. The nitroindoline 58 is hydrogenated, such as with H2 in the presence of a catalyst, such as Pd/C, to yield the amino-indoline 59.
Alternatively, substituted amino-indolines 62 are prepared from the nitroindoline 57. Nitroindoline 57, is reacted with an acid chloride to form an amide. Further treatment with a primary or secondary amine, preferably a secondary amine, such as in the presence of NaI, at a temperature above about 50 C, and preferably at about 70 C yields the nitroindoline 60. The nitro compound 60 is hydrogenated, such as with H2 in the presence of a catalyst, such as Pd/C, to yield the amino-indoline 61. The carbonyl is reduced, such as with BH3-THF, to yield 1-aminoalkylindolines 62.
Scheme 21
EMI88.1
<tb> <SEP> LG <SEP> 8r <SEP> r <SEP> IG
<tb> <SEP> LG <SEP> I
<tb> <SEP> /C1 <SEP> - <SEP> O <SEP> N <SEP> NH <SEP> OZN <SEP> N
<tb> 2N <SEP> NHz <SEP> z
<tb> <SEP> 63 <SEP> 64 <SEP> 65
<tb> <SEP> Pd <SEP> (OAc) <SEP> 2
<tb> <SEP> 1'
<tb> <SEP> OZN
<tb> <SEP> OzN <SEP> v <SEP> O
<tb> <SEP> x
<tb> <SEP> 67 <SEP> 66
<tb> <SEP> reduction
<tb> <SEP> X
<tb> <SEP> f
<tb> <SEP> HanN
<tb> <SEP> /L-O
<tb> <SEP> 66a
<tb>
Substituted indolines are prepared such as by the procedures described in Scheme 21.
Substituted acetamides 64 are prepared from the coupling of halo-5-nitroanilines 63 (where LG is bromo or chloro, preferably chloro) and an acylating agent, such as acetyl chloride or acetic anhydride, under standard coupling chemistry, such as with
DIEA, and DMAP, at a temperature of about RT, in a suitable solvent, such as CH2Cl2, DMF and/or DMAC.
The N- (2- methylprop-2-enyl) acetamide 65 is prepared from the acetamide 64, such as by the treatment of base, such as NaH in a suitable solvent such as NMP or anhydrous DMF and a 3halo-2-methylpropene such as 3-bromo-2-methylpropene or 3chloro-2-methylpropene, at a temperature between about 0 C and RT, and preferably at about RT;
or with CsC03 at a temperature above RT, preferably above about 50 C and more preferably above about 60 C. Cyclization of the N- (2- methylprop-2-enyl) acetamide 65, such as by the Heck-type reaction (treatment with Pd (OAc) 2 in the presence of base, for example tetraethyl-ammonium chloride, sodium formate, and NaOAc) at a temperature above about 50 C, and preferably at about 80 C, yields the protected (3,3-dimethyl-2,3dihydro-indol-1-yl) ethanone 66.
Deprotection, such as with strong acid such as AcOH, or HCl at a temperature above about 50 C, and preferably at about 70-80 C, yields the 3,3dimethyl-6-nitro-2,3-dihydro-indol-1-yl 67. Alternatively, the protected dihydro-6-nitro indoline 66 can be reduced, such as with Fe, or with 10% Pd/C in the presence of an excess of NH4CO2H, or with H2 in the presence of a catalyst to form the protected dihydro-6-amino indoline 66a.
Scheme 22
EMI89.1
Substituted anilines are prepared such as by the procedures described in Scheme 22. Nitrophenyl esters 69 are formed from the acid 68, such as by treatment with MeOH and acid. Alkylation of the ester 69, such as by treatment with base, such as NaH, followed by alkyl halide, yields the branched alkyl compounds 70. Reduction of the ester 70, such as with BH3, yields the alcohol 71. The aldehyde 72 is prepared from the alcohol 71, such as by treatment with TPAP in the presence of N-methylmorpholine-N-oxide. Subsequent treatment with methoxymethyltriphenylphosphonium chloride and KHMDS yields 72. Coupling of the aldehyde 72 with morpholine, such as with NaBH (OAc) 3 yields the tertiary amine 73.
Reduction of the nitro compound, such as with acid, for example AcOH, and zinc yields the aniline 74.
Scheme 23
EMI90.1
Substituted aniline compounds (where Ru ils a substituent selected those available for substituted R2, preferably haloalkyl and alkyl) are prepared such as by the procedure described in Scheme 23. Alkynyl-aniline 81, prepared similar to that described in Scheme 23, is hydrogenated such as with H2 in the presence of a catalyst, such as Pd (OH) 2, to yield the substituted alkyl 82.
Scheme 24
EMI90.2
83 84
Substituted bromophenyl compounds are prepared such as by the procedure described in Scheme 24. Bromine is added to a optionally substituted nitrobenzene 83, AgSO4 and acid, such as H2SO4, to provide the bromo derivative 84.
Scheme 25
EMI91.1
<tb> <SEP> Rt <SEP> Toluene, <SEP> TEA, <SEP> Pd <SEP> (OAC) <SEP> 2
<tb> <SEP> Pd <SEP> (PPh) <SEP> 3, <SEP> 120C
<tb> <SEP> Cl <SEP> Amine <SEP>
<tb> <SEP> II <SEP> NRV <SEP> Rv
<tb> O
<tb> <SEP> CH2Cl2 <SEP> 86 <SEP> 02N <SEP> Br <SEP> 87
<tb> 85 <SEP> 84
<tb> <SEP> Dioxane, <SEP> IpOH
<tb> <SEP> H2 <SEP> (65psi), <SEP> Pd/C
<tb> <SEP> Ru <SEP> t
<tb> <SEP> THF. <SEP> LAH, <SEP> /I
<tb> <SEP> \ <SEP> I- <SEP> H <SEP> N
<tb> <SEP> relux <SEP> 2 <SEP> O <SEP> NRv
<tb> , <SEP> N <SEP> < <SEP> NH2 <SEP> reflux <SEP> H2N <SEP> < <SEP> NXRv
<tb>
89 88
Substituted anilines are prepared such as by the procedure described in Scheme 25 (where Rt and Rv are alkyl, or together with the nitrogen atom form a 4-6 membered heterocyclic ring).
Acryloyl chloride 85 is reacted with an amine, preferably a secondary amine, such as at a temperature between about 0 C and about RT, to form the amide 86. A bromo-nitrobenzene 84 is reacted with the amide 88, such as in the presence of base, for example TEA, together with Pd (OAc) 2 and Pd (PPh3) 4, at a temperature above about 50 C, and preferably at about 120 C, such as in a sealed container, to form the substituted alkene 87.
Hydrogenation of the alkene 87, such as with H2 in the presence of a catalyst, for example Pd/C catalyst yields the substituted aniline 88. Reduction of the amide 88, such as with LiALH4, at a temperature above about 50 C, and preferably at about 80 C yields the aniline 89.
Scheme 26
EMI92.1
<tb> <SEP> fr\
<tb> <SEP> 4-(2-chloroethyl) <SEP> morpholine <SEP> HCl, <SEP> <
<tb> <SEP> 02N
<tb> <SEP> K <SEP> K2CO3, <SEP> CH3CN, <SEP> reflux
<tb> H
<tb> <SEP> H
<tb> <SEP> 90 <SEP> 91 <SEP> cl)
<tb> <SEP> 90
<tb> <SEP> /HZ <SEP> Pd/C
<tb> <SEP> 2nom
<tb> <SEP> han'
<tb> <SEP> 92
<tb> <SEP> 0
<tb>
Substituted indoles are prepared such as by the procedure described in Scheme 26. A nitroindole 90 is coupled with a halo compound, in the presence of base, for example K2C03. Heating at a temperature above about 50 C, and preferably at about reflux yields the substituted-nitro 1H-indole 91. Hydrogenation similar to conditions described above yields the amino derivative 92.
Scheme 27
EMI92.2
<tb> <SEP> OEt
<tb> <SEP> OEt <SEP> H2N--3 <SEP> N <SEP> < <SEP> O
<tb> <SEP> MeS <SEP> N <SEP> NH
<tb> <SEP> MeS <SEP> l <SEP> N <SEP> C1 <SEP> EtOH <SEP> 70 C <SEP> k <SEP> R3
<tb> <SEP> 94
<tb> <SEP> 93
<tb> <SEP> NaOH
<tb> <SEP> aq. <SEP> EtOH
<tb> R\ <SEP> Rj <SEP> RT
<tb> <SEP> 'AT
<tb> <SEP> R2 <SEP> R2
<tb> <SEP> OU
<tb> <SEP> Raney-Ni <SEP> N <SEP> I <SEP> T <SEP> Rz <SEP> NHZ
<tb> N <SEP> NH <SEP> o <SEP> Me5'N <SEP> NH <SEP> CHzClz <SEP> MeSNH
<tb> <SEP> EtOH, <SEP> 90 <SEP> C <SEP> 3 <SEP> HATU, <SEP> TEA <SEP> g
<tb> <SEP> 95
<tb> <SEP> 97 <SEP> 96
<tb>
Substituted pyrimidines are prepared such as by the procedure described in Scheme 27.2-Methylthio-5-pyrimidyl acids 95 are prepared from the corresponding esters 93 similar to procedures described above.
The amides 96 are formed from the acids 95 by coupling with the amine such as in the presence of HATU and base, TEA for example. The methylthio group can be removed, such as with Raney-Ni and heat, preferably at about reflux temperature, to form the pyrimidine 97.
Scheme 28
EMI93.1
Substituted anilines are prepared such as by the procedure described in Scheme 28. Treatment with the haloalkyl alcohol 101 with an alcohol, such as in the presence of DEAD and PPh3 yields the ether 102 or 103.
Scheme 29
EMI93.2
<SEP> ,'LDA/CO <SEP> I <SEP> C02H <SEP> gOCl2 <SEP> I <SEP> COC1
<tb> NF <SEP> N"F <SEP> reflux <SEP> N"F
<tb> 104 <SEP> 105 <SEP> 106
<tb>
Functionalized pyr. idines are prepared such as by the procedure described in Scheme 29.2-Fluoropyridine 104 is treated with base, such as LDA, at a temperature below about 0 C, and preferably at about-78 C, and quenched with a stream of dry CO2 to form the nicotinic acid 105.
Alternatively, solid C02 (dry ice) can be used, preferably dried with N2 prior to use. The acid 105 is converted to the acid halide 106, such as by treatment with thionyl chloride and heating at a temperature above about 50 C, and preferably at about reflux.
Scheme 30
EMI94.1
<tb> <SEP> HN'R2
<tb> <SEP> Nu2
<tb> <SEP> N <SEP> CI
<tb> <SEP> N <SEP> C <SEP> ! <SEP> 1 <SEP> 7
<tb> <SEP> 16
<tb> Ri <SEP> R2
<tb> <SEP> coci
<tb> <SEP> C <SEP> 1. <SEP> Polymer-DlpEA <SEP> NH2//
<tb> <SEP> Cl
<tb> <SEP> 2. <SEP> Polymer <SEP> trisamine <SEP> resin
<tb> <SEP> 108
<tb>
Chloro-substituted pyridines 107 are prepared such as by the procedure described in Scheme 30.2-Chloronicotinic acid is activated with ethyl chloroformate, in the presence of base, such as TEA, at a temperature of about RT.
Reaction with an amine produces amide 107. Alternatively, the amine can be coupled with the acid chloride 108, such as with polymer-supported DIPEA. Excess acid chloride is removed by treating the reaction mixture with polymersupported trisamine resin, to form amide 107.
Scheme 31
EMI95.1
Amino-substituted indoles 111 are prepared such as by the procedure described in Scheme 31. Nitroindoline 109 is reacted with N-methyl-4-piperidone in the presence of NaOMe at a temperature above about 50 C, and preferably at about reflux, to form the 3-substituted indole 110. Hydrogenation as previously discussed yields the amino indole 111.
Scheme 32
EMI95.2
Alkylated indazoles can be prepared by the process outlined in Scheme 32. To a solution of 6-nitroindazole 112 in a solvent such as THF is added strong base, such as NaH at a temperature below RT, preferably at about 0 C.
Alkylhalides, such as where R"is methyl, are added and reacted at a temperature about RT to give 1-alkyl-6-nitro1H-indazole 113. The nitro indazole 113 is hydrogenated, such as with an H2 atmosphere in the presence of a catalyst, such as Pd/C to give the 1-substituted-6-amino-lH-indazole 114.
Scheme 33
EMI96.1
Brominated indazoles can be prepared by the process outlined in Scheme 33. NBS is slowly added to an acidic solution, such as a mixture of TFA: H2SO4 (5: 1) and tertbutyl-4-nitrobenzene 115 at a temperature of about RT to yield the brominated compound 116.
Scheme 34
EMI96.2
<tb> <SEP> Ru
<tb> <SEP> Rx <SEP> Rx
<tb> <SEP> (Br <SEP> HN <SEP> N-Br
<tb> <SEP> U
<tb> jar
<tb> <SEP> N <SEP> hydrogenation <SEP> N
<tb> <SEP> NO <SEP> c <SEP> c
<tb> 117 <SEP> 118 <SEP> 119
<tb>
Substituted anilines (where Rx is a substituent selected those available for substituted R2) can be prepared by the process outlined in Scheme 34. A mixture of 1 (substituted)-2-bromo-4-nitrobenzene 117 and Nmethylpiperazine is heated, such as with or without solvent, preferably without solvent, at a temperature above RT, preferably at a temperature above about 100 C, and more preferably at a temperature at about 130 C to give the 1- [5- (substituted)-2-nitrophenyl]-4-methylpiperazine 118.
The nitro compound 118 is hydrogenated, such as with an H2 atmosphere in the presence of a catalyst, such as Pd/C to furnish 4- (substituted)-2- (4-methylpiperazinyl) phenylamine 119.
Scheme 35
EMI97.1
122
Tricyclic heterocycles can be prepared by the process outlined in Scheme 35.7-Nitro-2,3,4-trihydroisoquinolin-1one 120 is heated in POC13 at a temperature above RT, preferably at a temperature sufficient for reflux, to form the 1-chloro-7-nitro-3, 4-dihydroisoquinoline 121. The 1- chloro-7-nitro-3,4-dihydroisoquinoline 121 is dissolved in a solvent, such as THF, and H2NNH2 is added. The reaction is heated with HC (OEt) 3 at a temperature above RT, preferably at a temperature above about 75 C, and more preferably at a temperature at about 115 C to give the nitro-substituted tricyclic. Hydrogenation, such as with an H2 atmosphere in the presence of a catalyst, such as Pd/C, gives 2-amino5,6,7-trihydro-1,2,4-triazolo [3,4-a] isoquinoline 122.
Scheme 36
EMI98.1
<tb> <SEP> y
<tb> <SEP> 02N <SEP> N
<tb> <SEP> 02NCcxm
<tb> 02N <SEP> H <SEP> NaBH <SEP> (OA <SEP> NP
<tb> <SEP> 123 <SEP> 124
<tb> <SEP> H2,Pd/C
<tb> <SEP> '
<tb> <SEP> S) <SEP> Y) <SEP> RAOH
<tb> <SEP> O, <SEP> R <SEP> oH
<tb> <SEP> A <SEP> I. <SEP> H <SEP> N <SEP> N <SEP> P <SEP> R5 <SEP> R3 <SEP> N <SEP> w <SEP> I <SEP> N
<tb> <SEP> N <SEP> E---H2
<tb> <SEP> -ru
<tb> <SEP> 125
<tb> <SEP> 125
<tb> <SEP> Deprotection
<tb> <SEP> t <SEP> f
<tb> <SEP> W
<tb> <SEP> 0 <SEP> R <SEP> HCHO <SEP> R1
<tb> <SEP> R, <SEP> A <SEP> N'O <SEP> Nt
<tb> <SEP> A <SEP> '2 <SEP> H <SEP> N <SEP> NaBH <SEP> (OAc) <SEP> 3 <SEP> N5 <SEP> R3 <SEP> N#c
<tb> - <SEP> NR3 <SEP> NH <SEP> R5
<tb> <SEP> Ruz
<tb>
127
Indolinyl substituted carboxamides can be prepared from the corresponding nitro indoline 123 by the process outlined in Scheme 36.
For example, 3,3-dimethyl-6nitroindoline 123 is alkylated, such as with N-protected-4 formylpiperidine in the presence of NaHB (OAc) 3 and acid, such as glacial AcOH, and solvent, such as dichloromethane, at a temperature of about RT, to afford the alkylated indane 124. Hydrogenation of the alkylated indane 124, such as with an H2 atmosphere in the presence of a catalyst, such as
Pd/C, in the presence of a solvent, such as an alcohol, preferably MeOH, to give the amino intermediate 125.
Alternatively, other hydrogenation methods can be used, such as Fe powder with NH4C1. Coupling of the amine 125, such as with 2-chloronicotinic acid and DIEA, HOBt and EDC, in a solvent such as CH2C12 at a temperature of about RT provides the protected carboxamide 126, which upon deprotection and alkylation yields other compounds of the invention, 127 and 128, respectively. Alternatively, amine 125 is reacted with 2-fluoronicotinoyl chloride to form a 2-fluoronicotinamide, which can be alkylated, such as in Scheme 10.
Scheme 37
EMI99.1
131
Substituted anilines can be prepared by the process outlined in Scheme 37 (where R is a substituent selected those available for substituted R, preferably haloalkyl and alkyl). 1-Methyl-4-piperidinone 129 is added to a solution of strong base such as LiHMDS, in a solvent such as THF, at a temperature below RT, preferably lower than about-50 C, more preferably at about-78 C. Tf2NPh is reacted with the enolate at a temperature of about RT, to give 1-methyl-4 (1,2,5, 6-tetrahydro) pyridyl- (trifluoromethyl) sulfonate.
A mixture of the triflate intermediate, bis (pinacolato) diboron, potassium acetate, PdCl2dppf, and dppf in a solvent such as dioxane is heated at a temperature above RT, preferably at a temperature above about 50 C, and more preferably at a temperature at about 80 C to give 4,4,5,5-tetramethyl-2- (1-methyl (4-1,2,5,6tetrahydropyridyl))-1, 3,2-dioxaborolane 130. The substituted aniline 131 is formed from the 1,3,2dioxaborolane 130 such as with treatment with an amine in the presence of PdC12dppf and base, such as K2CO3, in a solvent such as DMF at a temperature above RT, preferably at a temperature above about 50 C, and more preferably at a temperature at about 80 C.
Scheme 38
EMI100.1
<tb> <SEP> NH <SEP> NH <SEP> N
<tb> <SEP> KOH, <SEP> 0 <SEP> alkylation
<tb> ---o
<tb> <SEP> 134
<tb> <SEP> nitration
<tb> <SEP> N
<tb> <SEP> N
<tb> <SEP> hydrogenation
<tb> <SEP> 136 <SEP> 135
<tb> <SEP> han
<tb> <SEP> 136 <SEP> 135
<tb>
Substituted anilines can be prepared by the process outlined in Scheme 38.4-Cyano-4-phenylpiperidine hydrochloride 132 is treated with base, such as KOH, at a temperature above RT, preferably at a temperature above about 100 C, and more preferably at a temperature at about 160 C, to provide the phenyl piperidine 133. Alkylation of the phenyl piperidine 133, such as with formaldehyde and
NaCNBH3 in a solvent such as CH3CN, with sufficient acid to maintain the reaction pH near 7, to provide the alkylated piperidine 134.
Nitration of the phenylpiperidine 134, such as with H2SO4 and fuming HN03 at a temperature below RT, and preferably at about 0 C, gives the nitro intermediate 135.
Hydrogenation of the nitro intermediate 135, such as with an H2 atmosphere in the presence of a catalyst, such as Pd/C, in the presence of a solvent, such as an alcohol, preferably
MeOH, to give the amino intermediate 136.
Scheme 39
EMI101.1
<tb> O <SEP> N <SEP> I <SEP> 1-methyl <SEP> piperazine <SEP> OZN <SEP> N
<tb> 2 <SEP> OH <SEP> N
<tb> <SEP> O <SEP> EDC, <SEP> CH2C12
<tb>
137 138
Substituted amides can be prepared by the process outlined in Scheme 39.3-Nitrocinnamic acid 137 is coupled with 1-methylpiperazine in the presence of EDC and a solvent such as CH2Cl2, at a temperature of about RT gives the carboxamide 138.
Scheme 40
EMI102.1
<tb> <SEP> I
<tb> <SEP> Jan. <SEP> N
<tb> <SEP> nu
<tb> <SEP> cul
<tb> NH2\ <SEP> Br <SEP> protection <SEP> \ <SEP> Br <SEP> PdCl2 <SEP> (PPh3) <SEP> 2
<tb> <SEP> - <SEP> I <SEP> I, <SEP> 8
<tb> <SEP> 8'-'R <SEP> TEA <SEP> 141
<tb> <SEP> 140
<tb> <SEP> 139 <SEP> Hydrogenation
<tb> <SEP> deprotection
<tb> <SEP> I <SEP> NH
<tb> <SEP> licr--1
<tb> <SEP> 143 <SEP> VR8/
<tb> <SEP> 142
<tb>
Substituted benzylamines can be prepared by the process outlined in Scheme 40. A substituted bromobenzylamine 139 where Rua is a substituent described for R2 is protected such as with Boc2O in the presence of base, such as TEA in an appropriate solvent such as CH2Cl2.
The protected bromobenzylamine 140 is alkylated, such as with 1-dimethylamino-2-propyne in the presence of catalyst, such as PdCl2 (PPh3) 2 bis (triphenyphosphino)-palladium chloride, and CuI, in the presence of base, such as TEA, at a temperature above RT, preferably at a temperature above about 50 C, and more preferably at a temperature at about 100 C, such as in a sealed tube, to form the propynylbenzylamine 141. The propynylbenzylamine is hydrogenated such as with H2 in the presence of Pd (OH) 2 and
MeOH to provide the propylbenzylamine 142. Deprotection, such as with strong acid, such as TFA, for removal of a Boc protecting group, yields the propylbenzylamine 143.
Scheme 41
EMI103.1
<tb> <SEP> I <SEP> H
<tb> HN <SEP> p-N <SEP> 1, <SEP> tetrapropylammonium <SEP> peruthenate <SEP> H2N
<tb> <SEP> Cul, <SEP> PdCl2 <SEP> (PPh3) <SEP> 2 <SEP> NMO, <SEP> molecular <SEP> sieve
<tb> <SEP> i/i
<tb> <SEP> propargylalcohol
<tb> <SEP> bu
<tb> <SEP> 2. <SEP> morpholine, <SEP> NaBH <SEP> (OAr,) <SEP> 3 <SEP> R8 <SEP> oNJ
<tb> <SEP> 3. <SEP> deprotection <SEP> 145
<tb> <SEP> 140 <SEP> vs
<tb>
Substituted benzylamines can be prepared by the process outlined in Scheme 41.
The protected bromobenzylamine 140 is alkylated, such as with propargyl alcohol in the presence of catalyst, such as PdCl2 (PPh3), and CuI, in the presence of base, such as TEA, at a temperature above RT, preferably at a temperature above about 50 C, and more preferably at a temperature at about 100 C, such as in a sealed tube, to form the protected hydroxypropynylbenzylamine 144. The protected hydroxypropynylbenzylamine is treated with N- methylmorpholine oxide in the presence of a catalyst, such as tetrapropylammonium perruthenate, to form the aldehyde intermediate. Reductive amination, such as with the addition of morpholine and NaBH (OAc) 3 provides the morpholinyl derivative.
Deprotection, such as with strong acid, such as TFA, for removal of a Boc protecting group, yields the propylbenzylamine 145.
Scheme 42
EMI104.1
Substituted heterocycles may be prepared by the method found in Scheme 42. Chloro-heterocycles 146 (where LG is OH) is coupled with an amine 147 at a suitable temperature, such as a temperature over about 100 C to give the 2-substituted amino-nicotinic acid 148. The 2-substituted amino-nicotinic acid 148 is reacted with a substituted amine in the presence of a coupling reagent, such as BOP-C1 and base, such as TEA to form the 2-substituted amino-nicotinamide 149.
Alternatively, 2-chloro-nicotinoyl chloride 146 (where
LG is Cl) is coupled first with R2-MH2, such as in the presence of base, e. g., NaHC03, in a suitable solvent, such as IpOH or CH2C12, to form the amide 150, then coupled with a benzylamine 147 to yield the 2-substituted aminonicotinamide 149. Where A is a pi-electron rich heterocycle, the addition of KF, such as 40% KF on alumina in IpOH, at a temperature over about 100 C, preferably about 160 C, can be used in the formation of 149 from 150.
Scheme 43
EMI105.1
<tb> <SEP> NAH
<tb> <SEP> O2N <SEP> < <SEP> N <SEP> MeI/TBAI/CH2Cl2 <SEP> o <SEP> N <SEP> < <SEP> +
<tb> <SEP> r. <SEP> t.
<tb>
<SEP> 151 <SEP> 152
<tb> <SEP> Bromination
<tb> <SEP> \
<tb> <SEP> Reduction <SEP> I <SEP> \ <SEP> I <SEP> \ <SEP> +
<tb> <SEP> \ <SEP> N, <SEP> Reduction)! <SEP> 1,
<tb> O2NJ <SEP> Br'i <SEP> zu
<tb> <SEP> 54 <SEP> 153
<tb> <SEP> 154 <SEP> 153
<tb> <SEP> Pd <SEP> (OAc) <SEP> 2
<tb> <SEP> DMF
<tb> <SEP> 1'
<tb> <SEP> N
<tb> O2N <SEP> N\ <SEP> EtOH <SEP> H2N <SEP> N
<tb>
155
156
2,3,4,4a, 9,9a-hexahydro-lH-3-aza-fluoren-6-ylamine may be prepared by the method found in Scheme 43.
Nitrobenzylpyridines 151 are alkylated, such as with MeI, in the presence of TBAI and base to form the pyridinium compound 152. The pyridinium compounds 152 are halogenated, such as brominated with NBS, to form the brominated pyridinium compounds 153 which are reduced such as with
NaBH4 to form the tetrahydro-pyridines 154. Palladium catalyzed intramolecular Heck coupling followed by hydrogenation forms the hexahydro-fluorenes 156.
The starting compounds defined in Schemes 1-43 may also be present with functional groups in protected form if necessary and/or in the form of salts, provided a saltforming group is present and the reaction in salt form is possible. If so desired, one compound of Formula I-III can be converted into another compound of Formula I-III or an Noxide thereof ; a compound of Formula I-III can be converted into a salt; a salt of a compound of Formula I-III can be converted into the free compound or another salt; and/or a mixture of isomeric compounds of Formula I-III can be separated into the individual isomers.
N-Oxides can be obtained in a known matter by reacting a compound of Formula I-III with hydrogen peroxide or a peracid, e. g., 3-chloroperoxy-benzoic acid, in an inert solvent, e. g., CH2C12, at a temperature between about-10 35 C, such as about 0 C-RT.
If one or more other functional groups, for example carboxy, hydroxy, amino, or mercapto, are or need to be protected in a compound of Formula I-III or in the synthesis of a compound of Formula I-III, because they should not take part in the reaction, these are such groups as are usually used in the synthesis of peptide compounds, and also of cephalosporins and penicillins, as well as nucleic acid derivatives and sugars.
The protecting groups may already be present in precursors and should protect the functional groups concerned against unwanted secondary reactions, such as acylations, etherifications, esterifications, oxidations, solvolysis, and similar reactions. It is a characteristic of protecting groups that they lend themselves readily, i. e. without undesired secondary reactions, to removal, typically by solvolysis, reduction, photolysis or also by enzyme activity, for example under conditions analogous to physiological conditions, and that they are not present in the end-products. The specialist knows, or can easily establish, which protecting groups are suitable with the reactions mentioned above and hereinafter.
The protection of such functional groups by such protecting groups, the protecting groups themselves, and their removal reactions are described for example in standard reference works, such as J. F. W. McOmie, "Protective Groups in Organic Chemistry", Plenum Press,
London and New York 1973, in T. W. Greene,"Protective
Groups in Organic Synthesis", Wiley, New York 1981, in"The
Peptides" ; Volume 3 (editors: E. Gross and J. Meienhofer),
Academic Press, London and New York 1981, in"Methoden der organischen Chemie" (Methods of organic chemistry), Houben
Weyl, 4th edition, Volume 15/1, Georg Thieme Verlag,
Stuttgart 1974, in H.-D. Jakubke and H.
Jescheit, "Aminosauren, Peptide, Proteine" (Amino acids, peptides, proteins), Verlag Chemie, Weinheim, Deerfield Beach, and
Basel 1982, and in Jochen Lehmann,"Chemie der
Kohlenhydrate: Monosaccharide und Derivate" (Chemistry of carbohydrates: monosaccharides and derivatives), Georg
Thieme Verlag, Stuttgart 1974.
In the additional process steps, carried out as desired, functional groups of the starting compounds which should not take part in the reaction may be present in unprotected form or may be protected for example by one or more of the protecting groups mentioned above under "protecting groups". The protecting groups are then wholly or partly removed according to one of the methods described there.
Salts of a compound of Formula I-III with a saltforming group may be prepared in a manner known per se. Acid addition salts of compounds of Formula I-III may thus be obtained by treatment with an acid or with a suitable anion exchange reagent. A salt with two acid molecules (for example a dihalogenide of a compound of formula I) may also be converted into a salt with one acid molecule per compound (for example a monohalogenide); this may be done by heating to a melt, or for example by heating as a solid under a high vacuum at elevated temperature, for example from about 130 C to about 170 C, one molecule of the acid being expelled per molecule of a compound of Formula I-III.
Salts can usually be converted to free compounds, e. g., by treating with suitable basic agents, for example with alkali metal carbonates, alkali metal hydrogen carbonates, or alkali metal hydroxides, typically potassium carbonate or sodium hydroxide.
A compound of formula I, wherein Z is oxygen, can be converted into the respective compound wherein Z is sulfur, for example, by using an appropriate sulfur compound, e. g. using reaction with Lawesson's reagent (2,4-bis- (4methoxyphenyl)-1,3-dithia-2,4-diphosphetane-2,4-disulfide) in a halogenated hydrocarbon, such as CH2Cl2, or an aprotic solvent, such as toluene or xylene, at temperatures from about 30 C to reflux.
All process steps described here can be carried out under known reaction conditions, preferably under those specifically mentioned, in the absence of or usually in the presence of solvents or diluents, preferably such as are inert to the reagents used and able to dissolve these, in the absence or presence of catalysts, condensing agents or neutralizing agents, for example ion exchangers, typically cation exchangers, for example in the H+ form, depending on the type of reaction and/or reactants at reduced, normal, or elevated temperature, for example in the range from about 100 C to about 190 C, preferably from about-80 C to about 150 C, for example at about-80 to about 60 C, at RT,
at about-20 C to about 40 C or at the boiling point of the solvent used, under atmospheric pressure or in a closed vessel, where appropriate under pressure, and/or in an inert atmosphere, for example under argon or nitrogen.
Salts may be present in all starting compounds and transients, if these contain salt-forming groups. Salts may also be present during the reaction of such compounds, provided the reaction is not thereby disturbed.
In certain cases, typically in hydrogenation processes, it is possible to achieve stereoselective reactions, allowing for example easier recovery of individual isomers.
The solvents from which those can be selected which are suitable for the reaction in question include for example water, esters, typically lower alkyl-lower alkanoates, e. g., ethyl acetate, ethers, typically aliphatic ethers, e. g., diethyl ether, or cyclic ethers, e. g., THF, liquid aromatic hydrocarbons, typically benzene or toluene, alcohols, typically MeOH, EtOH or 1-propanol, IpOH, nitriles, typically CH3CN, halogenated hydrocarbons, typically CH2Cl2, acid amides, typically DMF, bases, typically heterocyclic nitrogen bases, e. g. pyridine, carboxylic acids, typically lower alkanecarboxylic acids, e. g., AcOH, carboxylic acid anhydrides, typically lower alkane acid anhydrides, e.
g., acetic anhydride, cyclic, linear, or branched hydrocarbons, typically cyclohexane, hexane, or isopentane, or mixtures of these solvents, e. g., aqueous solutions, unless otherwise stated in the description of the process. Such solvent mixtures may also be used in processing, for example in chromatography.
The invention relates also to those forms of the process in which one starts from a compound obtainable at any stage as a transient and carries out the missing steps, or breaks off the process at any stage, or forms a starting material under the reaction conditions, or uses said starting material in the form of a reactive derivative or salt, or produces a compound obtainable by means of the process according to the invention and processes the said compound in situ. In the preferred embodiment, one starts from those starting materials which lead to the compounds described above as preferred.
The compounds of Formula I-III, including their salts, are also obtainable in the form of hydrates, or their crystals can include for example the solvent used for crystallization (present as solvates).
New starting materials and/or intermediates, as well as processes for the preparation thereof, are likewise the subject of this invention. In the preferred embodiment, such starting materials are used and reaction conditions so selected as to enable the preferred compounds to be obtained.
Starting materials of the invention, are known, are commercially available, or can be synthesized in analogy to or according to methods that are known in the art.
For example, amine 1 can be prepared by reduction of the corresponding nitro. The reduction preferably takes place in the presence of a suitable reducing agent, such as tin (II) chloride or hydrogen in the presence of an appropriate catalyst, such as Raney nickel (then preferably the hydrogen is used under pressure, e. g. between 2 and 20 bar) or Pt02, in an appropriate solvent, e. g. an alcohol, such as MeOH. The reaction temperature is preferably between about 0 C and about 80 C, especially about 15 C to about 30 C.
It would also be possible to reduce the nitro compound after forming the amide compound under reaction conditions analogous to those for the reduction of nitro compounds described above. This would eliminate the need to protect the free amino group as described in Scheme 1.
In the preparation of starting materials, existing functional groups which do not participate in the reaction should, if necessary, be protected. Preferred protecting groups, their introduction and their removal are described above or in the examples.
All remaining starting materials are known, capable of being prepared according to known processes, or commercially obtainable; in particular, they can be prepared using processes as described in the examples.
Compounds of the present invention can possess, in general, one or more asymmetric carbon atoms and are thus capable of existing in the form of optical isomers as well as in the form of racemic or non-racemic mixtures thereof.
The optical isomers can be obtained by resolution of the racemic mixtures according to conventional processes, e. g., by formation of diastereoisomeric salts, by treatment with an optically active acid or base. Examples of appropriate acids are tartaric, diacetyltartaric, dibenzoyltartaric, ditoluoyltartaric, and camphorsulfonic acid and then separation of the mixture of diastereoisomers by crystallization followed by liberation of the optically active bases from these salts. A different process for separation of optical isomers involves the use of a chiral chromatography column optimally chosen to maximize the separation of the enantiomers. Still another available method involves synthesis of covalent diastereoisomeric molecules by reacting compounds of the invention with an optically pure acid in an activated form or an optically pure isocyanate.
The synthesized diastereoisomers can be separated by conventional means such as chromatography, distillation, crystallization or sublimation, and then hydrolyzed to deliver the enantiomerically pure compound.
The optically active compounds of the invention can likewise be obtained by using optically active starting materials. These isomers may be in the form of a free acid, a free base, an ester or a salt.
The compounds of this invention may contain one or more asymmetric centers and thus occur as racemates and racemic mixtures, scalemic mixtures, single enantiomers, individual diastereomers and diastereomeric mixtures. All such isomeric forms of these compounds are expressly included in the present invention.
The compounds of this invention may also be represented in multiple tautomeric forms, for example, as illustrated below:
EMI112.1
The invention expressly includes all tautomeric forms of the compounds described herein.
The compounds may also occur in cis-or trans-or Eor Z-double bond isomeric forms. All such isomeric forms of such compounds are expressly included in the present invention. All crystal forms of the compounds described herein are expressly included in the present invention.
Substituents on ring moieties (e. g., phenyl, thienyl, etc.) may be attached to specific atoms, whereby they are intended to be fixed to that atom, or they may be drawn unattached to a specific atom, whereby they are intended to be attached at any available atom that is not already substituted by an atom other than H (hydrogen).
The compounds of this invention may contain heterocyclic ring systems attached to another ring system.
Such heterocyclic ring systems may be attached through a carbon atom or a heteroatom in the ring system.
Alternatively, a compound of any of the formulas delineated herein may be synthesized according to any of the processes delineated herein. In the processes delineated herein, the steps may be performed in an alternate order and may be preceded, or followed, by additional protection/deprotection steps as necessary. The processes may further comprise use of appropriate reaction conditions, including inert solvents, additional reagents, such as bases (e. g., LDA, DIEA, pyridine, K2CO3, and the like), catalysts, and salt forms of the above. The intermediates may be isolated or carried on in situ, with or without purification.
Purification methods are known in the art and include, for example, crystallization, chromatography (liquid and gas phase, simulated moving bed ("SMB")), extraction, distillation, trituration, reverse phase HPLC and the like. Reactions conditions such as temperature, duration, pressure, and atmosphere (inert gas, ambient) are known in the art and may be adjusted as appropriate for the reaction.
As can be appreciated by the skilled artisan, the above synthetic schemes are not intended to comprise a comprehensive list of all means by which the compounds described and claimed in this application may be synthesized. Further methods will be evident to those of ordinary skill in the art. Additionally, the various synthetic steps described above may be performed in an alternate sequence or order to give the desired compounds.
Synthetic chemistry transformations and protecting group methodologies (protection and deprotection) useful in synthesizing the inhibitor compounds described herein are known in the art and include, for example, those such as described in R. Larock, Comprehensive Organic
Transformations, VCH Publishers (1989); T. W. Greene and
P. G. M. Wuts, Protective Groups in Organic Synthesis, 3rd.
Ed., John Wiley and Sons (1999); L. Fieser and M. Fieser,
Fieser and Fieser's Reagents for Organic Synthesis, John
Wiley and Sons (1994) ; A. Katritzky and A. Pozharski,
Handbook of Heterocyclic Chemistry, 2nd Ed. (2001); M.
Bodanszky, A. Bodanszky: The practice of Peptide Synthesis
Springer-Verlag, Berlin Heidelberg 1984; J. Seyden-Penne:
Reductions by the Alumino-and Borohydrides in Organic
Synthesis, 2d Ed., Wiley-VCH, 1997; and L. Paquette, ed.,
Encyclopedia of Reagents for Organic Synthesis, John Wiley and Sons (1995).
The compounds of this invention may be modified by appending appropriate functionalities to enhance selective biological properties. Such modifications are known in the art and include those which increase biological penetration into a given biological compartment (e. g., blood, lymphatic system, central nervous system), increase oral availability, increase solubility to allow administration by injection, alter metabolism and alter rate of excretion.
The following examples contain detailed descriptions of the methods of preparation of compounds of Formulas I- III. These detailed descriptions fall within the scope, and serve to exemplify, the above described General Synthetic
Procedures which form part of the invention. These detailed descriptions are presented for illustrative purposes only and are not intended as a restriction on the scope of the invention.
Unless otherwise noted, all materials were obtained from commercial suppliers and used without further purification.
Anhydrous solvents such as DMF, THF, CH2Cl2 and toluene were obtained from the Aldrich Chemical Company. All reactions involving air-or moisture-sensitive compounds were performed under a nitrogen atmosphere. Flash chromatography was performed using Aldrich Chemical Company silica gel (200-400 mesh, 60A) or Biotage pre-packed column. Thin layer chromatography (TLC) was performed with Analtech gel
TLC plates (250). Preparative TLC was performed with
Analtech silica gel plates (1000-2000). Preparative HPLC was conducted on Beckman or Waters HPLC system with 0.1% TFA/H20 and 0.1% TFA/CH3CN as mobile phase.
The flow rate was at 20 ml/min. and gradient method was used. 1H NMR spectra were determined with super conducting FT NMR spectrometers operating at 400 MHz or a Varian 300 MHz instrument. Chemical shifts are expressed in ppm downfield from internal standard tetramethylsilane. All compounds showed NMR spectra consistent with their assigned structures. Mass spectra (MS) were determined on a Perkin
Elmer-SCIEX API 165 electrospray mass spectrometer (positive and, or negative) or an HP 1100 MSD LC-MS with eletrospray ionization and quadrupole detection. All parts are by weight and temperatures are in Degrees centigrade unless otherwise indicated.
The following abbreviations are used: AIBN-2, 2'-azobisisobutyronitrile
Ar-argon AgS04-silver sulfate ATP-adenosine triphosphate
BH3-borane Boc-tert-butyloxycarbonyl
BoczO-Boc anhydride
BOP-C1-bis (2-oxo-3-oxazolidinyl) phosphinic chloride Br2-bromine
BSA-bovine serum albumin t-BuOH-tert-butanol
CAN-ammonium cerium (IV) nitrate
CH3CN, AcCN-acetonitrile CH2C12-dichloromethane
CH3I, MeI-iodomethane, methyl iodide CC14-carbon tetrachloride
CC13-chloroform
CO2 - carbon dioxide
Cs2CO3 - cesium carbonate
DIEA-diisopropylethylamine
Cul-copper iodide
DCE-1,
2-dichloroethane
DEAD-diethyl azodicarboxylate
DIEA-diisopropylethylamine dppf-1,1-diphenylphosphinoferrocene
DMAP-4- (dimethylamino) pyridine
DMAC-N, N-dimethylacetamide
DMF-dimethylformamide
DMSO-dimethylsulfoxide
DTT-dithiothreitol
EDC, EDAC-1- (3-dimethylaminopropyl)-3- ethylcarbodiimide hydrochloride
EGTA-ethylene glycol-bis ( -aminoethyl ether)
N, N, N', N'-tetraacetic acid
EtOAc-ethyl acetate EtOH-ethanol Et20-diethyl ether
Fe-iron g-gram h-hour
HATU - O-(7-azabenzotriazol-1-yl)-N, N, N', N'- tetramethyluronium hexafluorophosphate
H2 - hydrogen
H2O - water HCl-hydrochloric acid
H2SO4 - sulfuric acid
H2NNH2 - hydrazine
HC (OEt)
3-triethylorthoformate
HCHO, H2CO - formaldehyde HCO2Na-sodium formate HOAc, AcOH-acetic acid
HOAt - 1-ydroxy-7-azabenzotriazole
HOBt-hydroxybenzotriazole
IpOH-isopropanol K2CO3-potassium carbonate KHMDS-potassium hexamethylsilazane
KNO3 - potassium nitrate KOAc-potassium acetate
KOH-potassium hydroxide
LAH,
LiAlH4 - lithium aluminum hydride LDA-lithium diisopropylamide
LiCl-lithium chloride LiHMDS-lithium hexamethyldisilazide MeOH-methanol MgCl2-magnesium chloride MgS04-magnesium sulfate mg-milligram ml-milliliter
MnCl2-manganese chloride NBS-N-bromosuccinimide
NMO-4-methylmorpholine, N-oxide
NMP-N-methylpyrrolidone
Na2SO4 - sodium sulfate
Na2S2O5 - sodium metabisulfite NaHC03-sodium bicarbonate
Na2CO3 - sodium carbonate
NaCl-sodium chloride
NaH-sodium hydride
NaI-sodium iodide NaOH-sodium hydroxide NaOMe-sodium methoxide
NaCNBH3 - sodium cyanoborohydride
NaBH4-sodium borohydride NaNO2-sodium nitrate
NaBH (OAc)
3-sodium triacetoxyborohydride
NH4Cl - ammonium chloride N2-nitrogen Pd/C-palladium on carbon
PdCl2 (PPh3) 2-palladium chloride bis (triphenylphosphine)
PdCl2(dppf) - 1,1-bis (diphenylphosphino) ferrocene palladium chloride
Pd (PPh3) 4-palladium tetrakis triphenylphosphine
Pd (OH) 2-palladium hydroxide
Pd (OAc)
2 palladium acetate
PMB-para methoxybenzyl POC13-phosphorus oxychloride PPh3-triphenylphosphine Pt02-platinum oxide
RT-room temperature si02 silica SOClz-thionyl chloride TBAI-tetrabutylammonium iodide
TEA-triethylamine Tf2NPh-N-phenyltrifluoromethanesulfonimide
TFA-trifluoroacetic acid
THF-tetrahydrofuran
TPAP-tetrapropylammoniumperruthenate Tris-HCl-Tris (hydroxymethyl) aminomethane hydrochloride salt
Zn-zinc
Preparation I-3-nitro-5-trifluoromethyl-phenol 1-Methoxy-3-nitro-5-trifluoromethyl-benzene (10g, Aldrich) and pyridine-HCl (41.8g, Aldrich)
were mixed together and heated neat at 210 C in an open flask. After 2.5 h the mixture was cooled to RT and partitioned between IN HC1 and
EtOAc. The EtOAc fraction was washed with IN HCl (4x), brine (lx), dried with Na2SO4, filtered and concentrated in vacuo to form 3-nitro-5-trifluoromethyl-phenol as an off-white solid.
Preparation II-1-Boc-4-(3-nitro-5-trifluoromethyl- phenoxy)-piperidine 3-Nitro-5-trifluoromethyl-phenol (8.81g) was dissolved in
THF (76 ml). 1-Boc-4-hydroxy-piperidine (8.81 g, Aldrich) and Ph3P (11.15 g) were added and the solution was cooled to -20 C. A solution of DEAD (6.8 ml, Aldrich) in THF (36 ml) was added dropwise, maintaining the temperature between-20 and-10 C. The reaction was warmed to RT and stirred overnight. The reaction was concentrated in vacuo and triturated with hexane. The yellow solid was removed by filtration and washed with Et2O (25 ml), and hexane.
The white filtrate was washed with IN NaOH (2x), brine (lx) and the hexane layer was dried over Na2SO4, filtered and concentrated in vacuo. The crude material was purified with flash chromatography (SiOz, 5-10% EtOAc/hexane) to obtain 1 Boc-4- (3-nitro-5-trifluoromethyl-phenoxy)-piperidine.
The following compounds were prepared similarly to the procedure outlined above: a) (S)-1-Boc- [2- (5-nitro-2-trifluoromethylphenoxymethyl]- pyrrolidine b) (R)-1-Boc- [2- (5-nitro-2-trifluoromethylphenoxymethyl]- pyrrolidine. c) (R) 1-Boc-2- (3-Nitro-5-trifluoromethyl-phenoxymethyl)- pyrrolidine d) 4- (2-tert-Butyl-5-nitro-phenoxymethyl)-1-methyl- piperidine. e) (S) 1-Boc-2- (3-Nitro-5-trifluoromethyl-phenoxymethyl)- pyrrolidine f) 1-Boc-3- (5-nitro-2-pentafluoroethyl-phenoxymethyl)- azetidine. g) N-Boc- [2- (5-nitro-2-pentafluoroethyl-phenoxy)- ethyl] amine. h) (R) 3- (2-tert-Butyl-5-nitro-phenoxymethyl)-l-Boc pyrrolidine.
i) 3- (2-tert-Butyl-5-nitro-phenoxymethyl)-1-Boc-azetidine. j) (S)-1-Boc- [2- (5-nitro-2-tert-butylphenoxymethyl]- pyrrolidine k) (S) 3- (2-tert-Butyl-5-nitro-phenoxymethyl)-l-Boc pyrrolidine.
1) (R)-1-Boc- [2- (5-nitro-2-tert-butylphenoxymethyl]- pyrrolidine
Preparation III-1-Boc-4- (3-amino-5-trifluoromethyl- phenoxy)-piperidine 1-Boc-4- (3-nitro-5-trifluoromethyl-phenoxy)-piperidine (470 mg) was dissolved in MeOH (12 ml) and Pd/C (10 mg) was added. After sparging briefly with H2, the mixture was stirred under H2 for 6 H. The catalyst was removed by filtration and the MeOH solution was concentrated in vacuo to yield 1-Boc-4- (3-amino-5-trifluoromethyl- phenoxy)-piperidine as an off-white foam.
The following compounds were prepared similarly to the procedure outlined above: a) 1-Boc-2- (3-Amino-5-trifluoromethyl-phenoxymethyl)- pyrrolidine. b) 2- (3-Amino-5-trifluoromethyl-phenoxymethyl)-1-methyl- pyrrolidine. c) [2- (1-Methylpiperidin-4-yloxy)-pyridin-4-yl] methylamine.
ESI (M+H) =222. d) [2- (2-Morpholin-4-yl-ethoxy)-pyridin-4-yl] methylamine. e) [2- (2-Morpholin-4-yl-propoxy)-pyridin-4-yl] methylamine. f) [2- (l-Methyl-pyrrolidin-2-ylmethoxy)-pyridin-4- yl] methylamine. ESI MS: (M+H) =222. g) (4-Aminomethyl-pyridin-2-yl)- (3-morpholin-4-yl-propyl)- amine. ESI MS: (M+H) =251. h) 4-tert-Butyl-3- (1-methyl-piperidin-4-ylmethoxy)- phenylamine. i) 4-tert-Butyl-3- (2-piperidin-1-yl-ethoxy)-phenylamine. j) 3- (1-Methyl-piperidin-4-ylmethoxy)-4-pentafluoroethyl- phenylamine. k) 3- (l-Isopropyl-piperidin-4-ylmethoxy)-4-pentafluoroethyl- phenylamine.
1) (S) 3-Oxiranylmethoxy-4-pentafluoroethyl-phenylamine. m) 3- (2-Pyrrolidin-1-yl-ethoxy)-4-trifluoromethyl- phenylamine. n) 3- (2-Piperidin-1-yl-ethoxy)-4-trifluoromethyl- phenylamine. o) (S) 3- (1-Boc-pyrrolidin-2-ylmethoxy)-4-pentafluoroethyl- phenylamine. p) (R) 3- (1-Boc-pyrrolidin-2-ylmethoxy)-4-pentafluoroethyl- phenylamine. q) (R) 3-(1-Methyl-pyrrolidin-2-ylmethoxy)-5- trifluoromethyl-phenylamine. r) (S) 3- (l-Methyl-pyrrolidin-2-ylmethoxy)-5- trifluoromethyl-phenylamine s) (R) 3-Oxiranylmethoxy-4-pentafluoroethyl-phenylamine. t) (R) 2- (5-Amino-2-pentafluoroethyl-phenoxy)-l-pyrrolidin
1-yl-ethanol.
u) 3- (l-Boc-azetidin-3-ylmethoxy)-4-pentafluoroethyl- phenylamine. v) 3- (2- (Boc-amino) ethoxy)-4-pentafluoroethyl-phenylamine. w) 6-Amino-2,2-dimethyl-4H-benzo [1,4] oxazin-3-one. M+H
193.2. Calc'd 192.1. x) 2,2,4-Trimethyl-3,4-dihydro-2H-benzo [1, 4] oxazin-6 ylamine. y) 1- (6-Amino-2, 2-dimethyl-2,3-dihydro-benzo [1,4] oxazin-4 yl)-ethanone. M+H 221.4. Calc'd 220.3. z) [2- (1-Benzhydryl-azetidin-3-yloxy)-pyridin-4-yl]- methylamine. aa) [2- (l-Methyl-piperidin-4-ylmethoxy)-pyridin-4-yl] methylamine. M+H 236.3. Calc'd 235.2. ab) 3- (4-Boc-piperazin-1-ylmethyl)-5-trifluoromethyl- phenylamine.
M+H 360.3. ac) 2-Boc-4,4-dimethyl-1,2,3,4-tetrahydro-isoquinolin-7 ylamine. ad) 3-Morpholin-4-ylmethyl-4-pentafluoroethyl-phenylamine. ae) 3- (4-Methyl-piperazin-1-ylmethyl)-4-pentafluoroethyl- phenylamine. M+H 410.3. Calc'd 409.4. af) 7-Amino-2- (4-methoxy-benzyl)-4, 4-dimethyl-3,4-dihydro 2H-isoquinolin-1-one. M+H 311.1. ag) 7-Amino-4,4-dimethyl-3,4-dihydro-2H-isoquinolin-1-one. ah) (3-Amino-5-trifluoromethyl-phenyl)- (4-Boc-piperazin-l- yl)-methanone. M+H 374.3; Calc'd 373. ai) 3- (4-Boc-Piperazin-1-ylmethyl)-5-trifluoromethyl- phenylamine. aj) 1- (7-Amino-4, 4-dimethyl-3,4-dihydro-lH-isoquinolin-2 yl)-ethanone.
M+H 219.2. ak) {2-[2-(1-Methylpiperidin-4-yl)ethoxy]-pyridin-4-yl} methylamine. al) {2-[2-(1-Pyrrolidinyl)ethoxy]-pyridin-4-yl}-methylamine. am) {2-[2-(1-Methylpyrrolin-2-yl) ethoxy]-pyridin-4-yl}- methylamine. an) (2-Chloro-pyrimidin-4-yl)-methylamine. ao) 3- (1-Boc-azetidin-3-ylmethoxy)-5-trifluoromethyl- phenylamine. ap) 4-tert-Butyl-3- (l-Boc-pyrrolidin-3-ylmethoxy)- phenylamine. M+H 385. aq) 4-tert-Butyl-3- (1-Boc-azetidin-3-ylmethoxy)-phenylamine.
M+Na 357. ar) (S) 4-tert-Butyl-3- (l-Boc-pyrrolidin-2-ylmethoxy)- phenylamine. M+Na 371. as) 3-tert-Butyl-4- (4-Boc-piperazin-1-yl)-phenylamine at) 3- (1-Methyl-piperidin-4-yl)-5-trifluoromethyl- phenylamine. au) 3,3-Dimethyl-2,3-dihydro-benzofuran-6-ylamine. av) 3,9,9-Trimethyl-2,3,4,4a, 9,9a-hexahydro-lH-3-aza fluoren-6-ylamine. aw) 4- [1-Methyl-l- (l-methyl-piperidin-4-yl)-ethyl] phenylamine was prepared using EtOH as the solvent. ax) 4-tert-Butyl-3- (4-pyrrolidin-1-yl-but-1-enyl)- phenylamine. ay) (R) 3- (l-Boc-pyrrolidin-2-ylmethoxy)-5-trifluoromethyl- phenylamine. az) (S) 3- (l-Boc-pyrrolidin-2-ylmethoxy)-5-trifluoromethyl- phenylamine.
Preparation IV-1-Boc-4-{3-E (2-fluoro-pyridine-3-carbonyl)- amino]-5-trifluoromethyl-phenoxy}-piperidine 1-Boc-4- (3-amino-5-trifluoromethyl-phenoxy)-piperidine (4.37 g) was dissolved in CH2Cl2 (100 ml) and NaHC03 (2.4 g, Baker) was added. 2-Fluoropyridine-3-carbonyl chloride (2.12 g) was added an the reaction was stirred at RT for 2.5 h. The reaction was filtered and concentrated in vacuo to yield a yellow foam. (30%) EtOAc/Hexane was added and 1-Boc-4- {3- [ (2-fluoro-pyridine-3-carbonyl)-amino]-5-trifluoromethyl- phenoxy}-piperidine precipitated as an off white solid.
The following compounds were prepared similarly to the procedure outlined above: a) 2-Fluoro-N- [3- (3-piperidin-1-yl-propyl)-5- trifluoromethyl-phenyl]-nicotinamide. b) N- [4-tert-Butyl-3- (2-piperidin-1-yl-ethoxy)-phenyl]-2- fluoro-nicotinamide. c) N- [3, 3-Dimethyl-1- (1-methyl-piperidin-4-ylmethyl)-2, 3 dihydro-lH-indol-6-yl]-2-fluoro-nicotinamide. d) N- [1- (2-Dimethylamino-acetyl)-3, 3-dimethyl-2,3-dihydro
1H-indol-6-yl]-2-fluoro-nicotinamide e) N- [3, 3-Dimethyl-l- (2- (Boc-amino) acetyl)-2, 3-dihydro-1H indol-6-yl]-2-fluoro-nicotinamide. f) N- (4-Acetyl-2, 2-dimethyl-3,4-dihydro-2H-benzo [1,4] oxazin
6-yl)-2-fluoro-nicotinamide. M+H 344.5.
Calc'd 343.4. g) 2-Fluoro-N- (2, 2,4-trimethyl-3,4-dihydro-2H benzo [1, 4] oxazin-6-yl)-nicotinamide. M+H 316.2. Calc'd
315.1. h) N- (2, 2-Dimethyl-3-oxo-3,4-dihydro-2H-benzo [1,4] oxazin-6 yl)-2-fluoro-nicotinamide. M+H 316.1. Calc'd 315.10. i) 2-Fluoro-N- [3- (4-methyl-piperazin-1-ylmethyl)-5- trifluoromethyl-phenyl]-nicotinamide. M+H 481. Calc'd
480. j) 2-Fluoro-N-(2-Boc-4, 4-dimethyl-1, 2,3,4-tetrahydro isoquinolin-7-yl)-nicotinamide. M+H 400. k) 2-Fluoro-N- [3- (4-methyl-piperazin-1-ylmethyl)-4- pentafluoroethyl-phenyl]-nicotinamide. M+H 447.0.
Calc'd 446.
1) 2-Fluoro-N- (3-morpholin-4-ylmethyl-4-pentafluoroethyl- phenyl)-nicotinamide. m) 2-Fluoro-N- [4-iodophenyl]-nicotinamide. n) 2-Fluoro-N-(4, 4-dimethyl-1-oxo-1, 2,3,4-tetrahydro isoquinolin-7-yl)-nicotinamide. M+H 314.0, Calc'd 311. o) 2-Fluoro-N- [3- (4-Boc-piperazine-l-carbonyl)-5- trifluoromethyl-phenyl]-nicotinamide. M+H 495. p) 2-Fluoro-N- [3- (4-Boc-piperazin-1-ylmethyl)-5- trifluoromethyl-phenyl]-nicotinamide. M+H 483.3; Calc'd
482. q) N- (2-Acetyl-4, 4-dimethyl-1, 2,3,4-tetrahydro-isoquinolin
7-yl)-2-fluoro-nicotinamide.
M+H 430.0. r) N- 3-Dimethyl-1-(1-methyl-piperidin-4-yl)-2, 3-dihydro lH-indol-6-yl]-2-fluoro-nicotinamide. M+H 383.2; Calc'd
382.5. s) N- (4-tert-Butylphenyl)-2-fluoronicotinamide. t) N- (4-Trifluoromethylphenyl)-2-fluoronicotinamide. u) 2-Fluoro-N- [3- (1-Boc-azetidin-3-ylmethoxy)-5- trifluoromethyl-phenyl]-nicotinamide.
M-H 468.2; Calc'd
469.16. v) 2-Fluoro-N- [3- (l-Boc-azetidin-3-ylmethoxy)-4-tert-butyl- phenyl]-nicotinamide. w) (S) N- [4-tert-Butyl-3- (l-Boc-pyrrolidin-2-ylmethoxy)- phenyl]-2-fluoro-nicotinamide. M+Na 494. x) N- [3- (l-Methyl-piperidin-4-yl)-5-trifluoromethyl-phenyl]-
2-fluoro-nicotinamide was prepared with K2CO3. instead of NaHCO3. y) N- (3-Bromo-5-trifluoromethyl-phenyl)-2-fluoro- nicotinamide. z) 2-Fluoro-N- (3, 9,9-trimethyl-2,3,4,4a, 9,9a-hexahydro-lH-3 aza-fluoren-6-yl)-nicotinamide.
aa) 2-Fluoro-N- {4- [1-methyl-1- (l-methyl-piperidin-4-yl) ethyl]-phenyl}-nicotinamide ab) N-[3,3-Dimethyl-1-(1-Boc-piperidin-4-ylmethyl)-2, 3 dihydro-lH-indol-6-yl]-2-fluoro-nicotinamide.
Preparation V-1-Boc-4-{3-E (2-chloro-pyridine-3-carbonyl) amino]-5-trifluoromethyl-phenoxy}-piperidine 1-Boc-4-f3- [ (2-chloro-pyridine-3-carbonyl)-amino]-5- trifluoromethyl-phenoxy}-piperidine was prepared from 1-Boc- 4- (3-amino-5-trifluoromethyl-phenoxy)-piperidine and 2chloropyridine-3-carbonyl chloride by a procedure similar to that described in the preparation of 1-Boc-4-{3-[(2-fluoro- pyridine-3-carbonyl)-amino]-5-trifluoromethyl-phenoxy}piperidine.
The following compounds were prepared similarly to the procedure outlined above: a) N- (4-tert-Butyl-3-nitro-phenyl)-2-chloro-nicotinamide. b) 2-Chloro-N- [3- (3-piperidin-1-yl-propyl)-5- trifluoromethyl-phenyl]-nicotinamide. c) 2-Chloro-N- [3- (3-morpholin-4-yl-propyl)-5- trifluoromethyl-phenyl]-nicotinamide. d) 2-Chloro-N- [3- (l-methylpiperidin-4-yl)-5-trifluoromethyl- phenyl]-nicotinamide. e) 2-Chloro-N- [3- (l-methyl-piperidin-4-ylmethoxy)-4- pentafluoroethyl-phenyl]-nicotinamide. f) 2-Chloro-N- [3- (1-isopropyl-piperidin-4-ylmethoxy)-4- pentafluoroethyl-phenyl]-nicotinamide. g) (S) 2-Chloro-N- [4- (oxiranylmethoxy)-3-pentafluoroethyl- phenyl]-nicotinamide.
h) 2-Chloro-N- [3- (2-pyrrolidin-1-yl-ethoxy)-4- trifluoromethyl-phenyl]-nicotinamide. i) 2-Chloro-N- [3- (2-piperidin-1-yl-ethoxy)-4- pentafluoroethyl-phenyl]-nicotinamide. j) (R) 2-Chloro-N- [3- (l-Boc-pyrrolidin-2-ylmethoxy)-4- pentafluoroethyl-phenyl]-nicotinamide. k) (S) 2-Chloro-N- [3- (1-Boc-pyrrolidin-2-ylmethoxy)-4- pentafluoroethyl-phenyl]-nicotinamide.
1) (R) 2-Chloro-N- [3- (l-methyl-pyrrolidin-2-ylmethoxy)-5- trifluoromethyl-phenyl]-nicotinamide. m) (S) 2-Chloro-N- [3- (l-methyl-pyrrolidin-2-ylmethoxy)-5- trifluoromethyl-phenyl]-nicotinamide. n) (R) 2-Chloro-N- [4- (oxiranylmethoxy)-3-pentafluoroethyl- phenyl]-nicotinamide. o) (R) Acetic acid 2- {5- [ (2-chloro-pyridine-3-carbonyl)- amino]-2-pentafluoroethyl-phenoxy}-1-pyrrolidin-1-yl- ethyl ester. p) 2-Chloro-N- [3- (4-methyl-piperazin-1-ylmethyl)-5- trifluoromethyl-phenyl]-nicotinamide. q) 2-Chloro-N- [2- (4-methoxy-benzyl)-4, 4-dimethyl-l-oxo-
1,2,3,4-tetrahydro-isoquinolin-7-yl]-nicotinamide. M+H
450.2.
Calc'd 449. r) 2-Chloro-N- (4, 4-dimethyl-l-oxo-1, 2, 3,4-tetrahydro isoquinolin-7-yl)-nicotinamide. M+H 330.1, Calc'd 329. s) 2-Chloro-N- [3- (4-Boc-piperazin-1-ylmethyl)-5- trifluoromethyl-phenyl]-nicotinamide. t) 2-{3-[(2-Chloro-pyridine-3-carbonyl)-amino3-phenyl}-2- methyl-propionic acid methyl ester. M+H 405 u) N- {4-tert-Butyl-3- [2- (l-Boc-piperidin-4-yl)-ethyl]- phenyl}-2-chloro-nicotinamide. M+Na 524.
Calc'd 501.1. v) N- [3, 3-Dimethyl-1, 1-dioxo-2, 3-dihydro-lH- benzo [d] isothiazol-6-yl]-2-chloro-nicotinamide. w) N- [1, 1,4,4-Tetramethyl-1,2,3,4-tetrahydro-naphth-6-yl]-2 chloro-nicotinamide. x) 2-Chloro-N- [3, 3-dimethyl-2,3-dihydro-benzofuran-6-yl]-2 chloro-nicotinamide. y) 2-Chloro-N- [3- (1-Boc-piperidin-4-yloxy)-5- trifluoromethyl-phenyl]-nicotinamide. z) 2-Chloro-N- [3- (1-methyl-piperidin-4-ylmethyl)-5- trifluoromethyl-phenyl]-nicotinamide. aa) 2-Chloro-N- [3- (3-piperidin-1-yl-propyl)-5- trifluoromethyl-phenyl]-nicotinamide.
ab) N- [4-tert-Butyl-3- (4-pyrrolidin-1-yl-but-l-enyl)- phenyl]-2-chloro-nicotinamide. ac) (R) 2-Chloro-N- [3- (l-Boc-pyrrolidin-2-ylmethoxy)-5- trifluoromethyl-phenyl]-nicotinamide. ad) (S) 2-Chloro-N- [3- (l-Boc-pyrrolidin-2-ylmethoxy)-5- trifluoromethyl-phenyl]-nicotinamide.
Preparation VI - 1-Boc-2-{3-[(2-fluoro-pyridine-3-carbonyl) amino]-5-trifluoromethyl-phenoxymethyl}-pyrrolidine 1-Boc-2-{3-[(2-Fluoro-pyridine-3-carbonyl)-amino]-5- trifluoromethyl-phenoxymethyl}-pyrrolidine was prepared from 1-Boc-2- (3-amino-5-trifluoromethyl-phenoxymethyl)- pyrrolidine by a procedure similar to that described in the preparation of 1-Boc-4- {3- [ (2-fluoro-pyridine-3-carbonyl)- amino]-5-trifluoromethyl-phenoxy}-piperidine.
Preparation VII-2- (3-nitro-5-trifluoromethyl- phenoxymethyl)-pyrrolidine 1-Boc-2- (3-nitro-5-trifluoromethyl-phenoxymethyl)- pyrrolidine (2.35 g) was dissolved in CH2Cl2 (60 ml) and TFA (20 ml) was added. After stirring for 1 h at RT, the mixture was concentrated in vacuo to yield 2- (3-nitro-5- trifluoromethyl-phenoxymethyl)-pyrrolidine as an oil that solidified upon standing. The material was used as is without further purification.
The following compounds were prepared similarly to the procedure outlined above: a) (4-Aminomethyl-pyrimidin-2-yl)- (3-morpholin-4-yl-propyl)- amine. b) (4-Aminomethyl-pyrimidin-2-yl)- [2- (l-methyl-pyrrolidin-2- yl)-ethyl]-amine.
Preparation VIII-1-methyl-2-(3-nitro-5-trifluoromethyl- phenoxymethyl)-pyrrolidine 2- (3-Nitro-5-trifluoromethyl-phenoxymethyl)-pyrrolidine (6 mmol) was dissolved in CH3CN (20 ml) and formaldehyde (2.4 ml, 37% aqueous) was added. NaBH3CN (607 mg) was added, an exotherm was observed. The pH is monitored every 15 min and adjusted to-7 with AcOH. After 45 min, the mixture was concentrated in vacuo and the residue is dissolved in EtOAc, washed with 6N NaOH, IN NaOH, and 2N HC1 (3x). The acid washings were combined, adjusted to-pH 10 with solid Na2CO3 and extracted with EtOAc (2x).
The EtOAc fractions were combined, dried with Na2SO4, and purified with flash chromatography (Si02, 95 : 5: 0.5 CH2Cl2 : MeOH : NH40H) to afford 1-methyl-2- (3-nitro-5-trifluoromethyl-phenoxymethyl)- pyrrolidine.
The following compounds were prepared similarly to the procedure outlined above: a) 2- (l-Methylpiperidin-4-yl)-ethanol. b) 2- {3- [ (2-Fluoro-pyridine-3-carbonyl)-amino]-5- trifluoromethyl-phenoxymethyl}-1-methylpyrrolidine.
Preparation IX-4-tert-butyl-3-nitro-phenylamine
A mixture of 1, 3-dinitro-4-tert-butylbenzene (10.0 g) in H2O (56 ml) was heated to reflux. A mixture of Na2S (21.42 g) and sulfur (2.85 g) in H20 (34 ml) was added over 1 h via an addition funnel. The reaction maintained at reflux for 1.5 h then cooled to RT and extracted with EtOAc. The organic extracts were combined and washed with H20, brine, dried over MgSO4 and concentrated in vacuo to afford 4-tert-butyl3-nitro-phenylamine which was used as is without further purification.
Preparation X-N- (3-bromo-5-trifluoromethyl-phenyl)- acetamide 3-Bromo-5- (trifluoromethyl) phenylamine (5 g, Alfa-Aesar) was dissolved in AcOH (140 ml) and Ac2O (5.9 ml, Aldrich) was added. The reaction was stirred at RT overnight. The mixture was added slowly to H20 (-700 ml) forming a white precipitate. The solid was isolated by filtration, washed with H20 and dried under vacuum to yield N- (3-bromo-5- trifluoromethyl-phenyl)-acetamide.
Preparation XI-N- [3- (3-piperidin-l-yl-propyl)-5trifluoromethyl-phenyl]-acetamide
Allylpiperidine (1.96 g, Lancaster) was degassed under vacuum, dissolved in 0.5 M 9-BBN in THF (31.2 ml, Aldrich), and heated to reflux for 1 h, then cooled to RT.
PD (dppf) Cl2/CH2Cl2 was added to a degassed mixture of N- (3- bromo-5-trifluoromethyl-phenyl)-acetamide, K2CO3 (9.8 g) DMF (32. 1 ml and H20 (3 ml). The allyl piperidine solution was added heated to 60 C for 3 h. After cooling to RT and reheating at 60 C for 6 h, the mixture was cooled to RT and poured into H2O. The mixture was extracted with EtOAc (2x), and the EtOAc portion was washed with 2 N HC1 (2x) and brine. The aqueous phases were combined and the pH was adjusted to-11 with NaOH (15%) forming a cloudy suspension.
The cloudy suspension was extracted with EtOAc (2x) and the
EtOAc portion was dried with Na2SO4, filtered and concentrated in vacuo. The crude material was purified by flash chromatography (Si02, 95: 5: 0.5 CH2Cl2 : MeOH : NH40H) to afford N- [3- (3-piperidin-1-yl-propyl)-5-trifluoromethyl- phenyl]-acetamide as a brown oil that solidified under vacuum.
The following compounds were prepared similarly to the procedure outlined above: a) N- (3-Morpholin-4-ylpropyl-5-trifluoromethyl-phenyl)- acetamide from 4-allyl-morpholine. b) N- (3- (1-methylpiperdin-4-ylmethyl-5-trifluoromethyl- phenyl)-acetamide from 1-Methyl-4-methylene-piperidine.
Preparation XII-3- (3-piperidin-1-yl-propyl)-5- trifluoromethyl-phenylamine N- [3- (3-Piperidin-1-yl-propyl)-5-trifluoromethyl-phenyl]- acetamide (1.33 g) was dissolved in EtOH (40 ml) and 12 N
HC1 (40 ml) was added. After stirring overnight at 70 C and
RT, the mixture was concentrated in vacuo, affording 3- (3- piperidin-1-yl-propyl)-5-trifluoromethyl-phenylamine as a brown oil.
The following compounds were prepared similarly to the procedure outlined above: a) 3,3-Dimethyl-6-nitro-2,3-dihydro-lH-indole. M+H 193.1;
Calc'd 192.2. b) 3- (1-Methyl-piperidin-4-ylmethyl)-5-trifluoromethyl- phenylamine. c) 3-Morpholin-4-ylmethyl-5-trifluoromethyl-phenylamine.
Preparation XIII-3t3-Dimethyl-6-nitro-1-piperidin-4- ylmethyl-2,3-dihydro-lH-indole 3,3-Dimethyl-1- (1-Boc-piperidin-4-ylmethyl)-6-nitro-2,3 dihydro-lH-indole was dissolved in HCl/EtOAc and stirred for 2 h. The mixture was concentrated in vacuo and partitioned between 1,2-dichloroethane and IN NaOH. The organic layer was removed, washed with brine, dried (Na2SO4) and filtered.
The material was used without further purification.
Preparation XIV-N- [3- (3-morpholin-4-yl-propyl)-5- trifluoromethyl-phenylJ-acetamide
N- [3- (3-Morpholin-4-yl-propyl)-5-trifluoromethyl-phenyl]- acetamide was prepared from allyl morpholine and N- (3-bromo- 5-trifluoromethyl-phenyl)-acetamide similar to that described in the preparation of N- [3- (3-piperidin-1-yl- propyl)-5-trifluoromethyl-phenyl]-acetamide.
Preparation XV-3- (3-morpholin-4-yl-propyl)-5- trifluoromethyl-phenylamine 3- (3-Morpholin-4-yl-propyl)-5-trifluoromethyl-phenylamine was prepared from N- [3- (3-morpholin-4-yl-propyl)-5- trifluoromethyl-phenyl]-acetamide similar to that described in the preparation of 3- (3-piperidin-1-yl-propyl)-5- trifluoromethyl-phenylamine.
Preparation XVI-1-methyl-4-methylene-piperidine Ph3PCH3I (50 g, Aldrich) was suspended in Et20 (20 ml) and butyllithium (77.3 ml, 1.6 M in hexanes, Aldrich) was added dropwise. The reaction was stirred for 2 h at RT then 1- methylpiperidone (12.3 ml, Aldrich) was added slowly. The mixture was stirred at RT overnight. The solid was removed by filtration, the volume was reduced to-400 ml and additional solid was removed by filtration. The Et20 was washed with H20 (2x) and 2N HC1 (4x). The pH of the acid washings was adjusted to-11 with 6 N NaOH, then they were extracted with CH2C12 (4x).
The CH2Cl2 washings were dried over Na2SO4 and concentrated cold in vacuo to provide 1methyl-4-methylene-piperidine which was used as is.
Preparation XVII-N- [3- (1-methylpiperidin-4-yl)-5- trifluoromethyl-phenyl]-acetamide N- [3- (1-Methylpiperidin-4-yl)-5-trifluoromethyl-phenyl]- acetamide was prepared from 1-methyl-4-methylene-piperidine and N- (3-bromo-5-trifluoromethyl-phenyl)-acetamide similar to that described in the preparation of N- [3- (3-piperidin-l- yl-propyl)-5-trifluoromethyl-phenyl]-acetamide.
Preparation XVIII-3- (1-methylpiperidin-4-yl)-5- trifluoromethyl-phenylamine 3- (1-Methylpiperidin-4-yl)-5-trifluoromethyl-phenylamine was prepared from N- [3- (1-methylpiperidin-4-yl)-5- trifluoromethyl-phenyl]-acetamide similar to the procedure described in the preparation of 3- (3-piperidin-1-yl-propyl)- 5-trifluoromethyl-phenylamine.
Preparation XIX-2- (l-methylpiperidin-4-yloxy)-4- pyridylcarbonitrile 4-Hydroxy-l-methylpiperidine (25.4 g) was dissolved in THF (50 ml) in a 100 mL r. b. flask. NaH/mineral oil mixture (9.58 g) was slowly added to the flask and stirred for 20 min. 2-Chloro-4-cyanopyridine was added to the mixture and stirred at RT until completion. Diluted mixture with EtOAc and added H2O to quench mixture, then transferred contents to a sep. funnel. The organic phase was collected while the aqueous phase was washed two times with EtOAc. The combined organics were dried over Na2SO4, filtered, then concentrated in vacuo. Then redissolved mixture in CH2C12, 10% HC1 (300 ml) was added and the mixture was transferred to sep. funnel.
The org. was extracted, while EtOAc along with 300 mL 5N NaOH was added to the sep. funnel. The organic phases were collected, dried over Na2SO4, filtered and concentrated in vacuo affording 2- (l-methylpiperidin-4-yloxy)-4- pyridylcarbonitrile as a brown solid. ESI (M+H) = 218.
The following compounds were prepared similarly to the procedure outlined above: a) 2- (1-methylpiperidin-4-ylmethoxy)-4-pyridylcarbonitrile.
M+H 232.1. Calc'd 231.1. b) 2- (l-Benzhydryl-azetidin-3-yloxy)-4-pyridylcarbonitrile.
M+H 342.2. Calc'd 341.2. c) 2-(1-methylpiperidin-4-ylethoxy)-4-pyriidylcarbonitrile. d) 2- (1-pyrrolidinylethoxy)-4-pyridylcarbonitrile. e) 2- (l-methylpyrrolin-2-ylethoxy)-4-pyridylcarbonitrile. f) 2- [2- (1-Boc-azetidin-3-yl)-ethoxy]-4-pyridylcarbonitrile.
Preparation XX- [2- (l-methylpiperidin-4-yloxy)-pyridin-4- yl] methylamine bis hydrochloride [2- (l-Methylpiperidin-4-yloxy)-pyridin-4-yl] methylamine was diluted with Et2O (50 ml) and 1M HC1/Et20 (47 ml) was added.
The vessel was swirled until precipitate formed.
Preparation XXI-2- (2-morpholin-4-yl-ethoxy)-4- pyridylcarbonitrile 2- (2-Morpholin-4-yl-ethoxy)-4-pyridylcarbonitrile was prepared from 2-chloro-4-cyanopyridine and 2-morpholin-4-yl ethanol by a procedure similar to that described in the preparation of 2- (1-methylpiperidin-4-yloxy)-4- pyridylcarbonitrile. The hydrochloride salt was prepared similar to that described for [2- (1-methylpiperidin-4- yloxy)-pyridin-4-yl] methylamine bis hydrochloride.
Preparation XXII-2-morpholin-4-yl-propanol
LAH powder (1.6 g) was added to a flask while under N2 atmosphere, immediately followed by THF (50 ml). The mixture was chilled to 0 C, methyl 2-morpholin-4-ylpropionate (5 g) was added dropwise to the reaction mixture and stirred at 0 C. After 1 h, the mixture was worked up by adding H20 (44 mL), 2N NaOH (44 mL), then H20 (44 mL, 3x).
After 30 min of stirring, the mixture was filtered through
Celtes and the organic portion was concentrated in vacuo providing 2-morpholin-4-yl-propanol as a colorless oil.
The following compounds were prepared similarly to the procedure outlined above: a) (1-Methyl-piperidin-4-yl)-methanol. M+H 130.2. Calc'd
129.1.
Preparation XXIII-2- (2-morpholin-4-yl-propoxy)-4- pyridylcarbonitrile 2- (2-Morpholin-4-yl-propoxy)-4-pyridylcarbonitrile was prepared from 2-chloro-4-cyanopyridine and 2-morpholin-4-ylpropanol by a procedure similar to that described in the preparation of 2- (1-methylpiperidin-4-yloxy)-4- pyridylcarbonitrile.
Preparation XXIV-2- (I-Methyl-pyrrolidin-2-ylmethoxy)-4- pyridylcarbonitrile 2- (l-Methyl-pyrrolidin-2-ylmethoxy)-4-pyridylcarbonitrile was prepared from 2-chloro-4-cyanopyridine and 1-methyl pyrrolidin-2-ylmethanol by a procedure similar to that described in the preparation of 2-(1-methylpiperidin-4- yloxy)-4-pyridylcarbonitrile. ESI MS: (M+H) =218.
Preparation XXV-2- (3-morpholin-4-yl-propylamino)-4- pyridylcarbonitrile
To a flask charged with 2-chloro-4-cyanopyridine (2.0 g), was added the aminopropyl morpholine (2.11 ml). The mixture was heated to 79 C for 5 h and stirred. After 5 h the reaction was incomplete. The mixture was then heated at 60 C overnight. The crude compound was purified on silica gel (1-5% MeOH/CH2Cl2 gradient). ESI MS: (M+H) =247, (M
H) =245.
Preparation XXVI-5-Nitro-2-pentafluoroethylphenol
Combined 2-methoxy-4-nitro-1-pentafluoroethylbenzene (9.35 g) and pyridine hydrochloride in a round bottom flask and heated at 210 C for 1 h then cooled to RT. The mixture was diluted with EtOAc and 2N HC1 ( > 500 ml) until all residue dissolved. The organic layer was removed, washed with 2N HCl (2x) and concentrated in vacuo. The residue was dissolved in hexanes and EtzO, washed with 2N HCl, then brine. Dried organic layer over Na2S04, filtered, concentrated in vacuo and dried under high vacuum to provide 5-nitro-2-pentafluoromethylphenol.
Preparation XXVII-2-tert-Butyl-5-nitro-aniline
To H2SO4 (98%, 389 mL) in a 500 mL 3-neck flask was added 2tert-butyl aniline (40.6 mL). The reaction was cooled to 10 C and KNO3 in 3.89 g aliquots was added every 6 min for a total of 10 aliquots. Tried to maintain temperature at-5 C to-10 C. After final addition of KN03, stirred the reaction for five min then it was poured onto ice (50 g).
The black mix was diluted with H20 and extracted with EtOAc.
The aqueous layer was basified with solid NaOH slowly then extracted with EtOAc (2x). The combined organic layers were washed with 6N NaOH and then with a mix of 6N NaOH and brine, dried over Na2SO4, filtered and concentrated in vacuo to obtain crude 2-tert-butyl-5-nitro-aniline as a dark redblack oil which solidified when standing at RT. The crude material was triturated with about 130 mL hexanes. After decanting the hexanes, the material was dried to obtain a dark-red black solid.
Preparation XXVIII-2-tert-Butyl-5-nitrophenol
In a 250 ml round bottom flask, 20 mL concentrated H2SO4 was added to 2-tert-butyl-5-nitro-aniline (7.15 g) by adding 5 mL aliquots of acid and sonicating with occasional heating until all of the starting aniline went into solution. H2O (84 ml) was added with stirring, then the reaction was cooled to 0 C forming a yellow-orange suspension. A solution of NaN02 (2.792 g) in H20 (11.2 mL) was added dropwise to the suspension and stirred for 5 min. Excess NaN02 was neutralized with urea, then the cloudy solution was transferred to 500 ml 3-necked round bottom flask then added 17 mL of 1: 2 H2SO4 : H20 solution, and heated at reflux.
Two additional 5 mL aliquots of 1: 2 H2SO4 : H20 solution, a 7 mL aliquot of 1: 2 H2SO4 : H20 solution and another 10 mL of 1: 2 H2SO4 : H20 were added while heating at reflux. The mixture was cooled to RT forming a black layer floating on top of the aqueous layer. The black layer was diluted with EtOAc (300 mL) and separated. The organic layer was washed with H20 then brine, dried over Na2S04 and concentrated in vacuo.
Crude oil was purified on silica gel column with 8%
EtOAc/Hexanes. Upon drying under vacuum, the 2-tert-butyl5-nitrophenol was isolated as a brown solid.
Preparation XXIX-1-methylpiperidine-4-carboxylic acid ethyl ester
Piperidine-4-carboxylic acid ethyl ester (78 g) was dissolved in MeOH (1.2 L) at RT then formaldehyde (37%, 90 ml) and acetic acid (42 ml) were added and stirred for 2 h.
The mixture was cooled to 0 C, NaCNBH3 (70 g) was added, and the mix was stirred for 20 min at 0 C, then overnight at RT.
The mixture was cooled to 0 C then quenched with 6N NaOH.
The mixture was concentrated in vacuo to an aqueous layer, which was extracted with EtOAc (4x), brine-washed, dried over Na2S04, and concentrated in vacuo to provide 1- methylpiperidine-4-carboxylic acid ethyl ester.
The following compounds were prepared similarly to the procedure outlined above: a) (1-Methyl-piperidin-4-yl)-methanol. M+H 130.2. Calc'd 129.1.
Preparation XXX-N- [4-tert-Butyl-3- (l-methyl-piperidin-4- ylmethoxy)-phenyll-2-chloro-nicotinamide
N- [4-tert-Butyl-3- (l-methyl-piperidin-4-ylmethoxy)-phenyl]2-chloro-nicotinamide was prepared from 4-tert-butyl-3- (l- methyl-piperidin-4-ylmethoxy)-phenylamine by a procedure similar to that described in the preparation of 1-Boc-4- {3- [(2-chloro-pyridine-3-carbonyl)-amino]-5-trifluoromethylphenoxy}-piperidine.
Preparation XXXI S 2-(2-tert-Butyl-5-nitro-phenoxy)- ethyl]-piperidine
To 2-tert-butyl-5-nitrophenol (1.01 g) and K2CO3 (1.72 g) was added acetone (35 ml) and H2O (10.5 mL), then 1- (2- chloroethyl) piperidine HCl (1.909 g) and TBAI (153 mg). The mixture was stirred at reflux overnight. Additional K2CO3 (850 mg) and 1- (2-chloroethyl)-piperidine HC1 (950 mg) were added and the mixture was heated at reflux for 6 h. The mixture was concentrated in vacuo to an aqueous layer which was acidified with 2N HC1 and extracted with EtOAc. The aqueous layer was basified with 6N NaOH and washed with CH2C12 (3x).
The combined organic layers were washed with brine/lN NaOH and dried over Na2SO4. Washed the EtOAc layer with 2N NaOH/brine and dried over Na2SO4. The crude material was purified by silica gel column chromatography with 15% EtOAc/Hexanes to yield 1- [2- (2-tert-butyl-5-nitro- phenoxy)-ethyl]-piperidine as a light tan solid.
(M+1)=307.3.
Preparation XXXII-1-Boc-Piperidine-4-carboxylic acid ethyl ester
To a stirred solution of piperidine-4-carboxylic acid ethyl ester (23.5 g) in EtOAc (118 ml) at 0QC was added dropwise
Boc2O in EtOAc (60 ml). The reaction was warmed to RT and stirred overnight. Washed reaction with H20, 0. 1N HC1, H20, NaHC03 and brine. The organic layer was dried over Na2SO4, filtered and concentrated in vacuo. The liquid was dried under vacuum to provide 1-Boc-piperidine-4-carboxylic acid ethyl ester.
The following compounds were prepared similarly to the procedure outlined above: a) N-Boc- (2-chloropyrimidin-4-yl)-methylamine. b) 1- (2-tert-Butyl-4-nitrophenyl)-4-Boc-piperazine. c) 1-Boc-azetidine-3-carboxylic acid d) 1-Boc-4-Hydroxymethyl-piperidine using TEA.
Preparation XXXIII-1-BOC-4-hydroxymethyl-piperidine 1-Boc-4-Hydroxymethyl-piperidine was prepared from 1-Boc- piperidine-4-carboxylic acid ethyl ester by a procedure similar to that described in the preparation of 2-morpholin4-yl-propanol.
Preparation XXXIV-1-Boc-4-Methylsulfonyloxymethyl- piperidine
Dissolved 1-Boc-4-hydroxymethyl-piperidine in anhydrous CH2Cl2 (50 ml) and TEA (4.5 ml) and cooled to 0 C. Mesyl chloride (840 pl) was added and the mixture was stirred for 15 min then at RT for 45 min. The mixture was washed with brine/lN HC1 and then brine, dried over Na2SO4, concentrated in vacuo and dried under high vacuum to provide 1-Boc-4- methylsulfonyloxymethyl-piperidine as a yellow orange thick oil.
The following compounds were prepared similarly to the procedure outlined above: a) l-Boc-3-methylsulfonyloxymethyl-azetidine.
Preparation XXXV-1-Boc-4-(3-nitro-6-pentafluoroethyl- phenoxymethyl)-piperidine
To a slurry of 60% NaH suspension in DMF (30 mL) at RT added a solution of 5-nitro-2-pentafluoroethyl-phenol (3.6 g) in 5 mL DMF. The dark red mixture was stirred at RT for 10 min then added a solution of 1-Boc-4-methylsulfonyloxymethyl- piperidine (3.1 g) in 5 mL DMF. The reaction was stirred at 60 C and 95 C. After Ih, added 2.94 g K2CO3 and stirred overnight at 105 C. After cooling to RT, the reaction was diluted with hexanes and IN NaOH.
Separated layers, and washed organic layer with IN NaOH and with brine, dried over Na2SO4, filtered and concentrated in vacuo. Purification with silica gel column chromatography with 8% EtOAc/Hexanes yielded 1-Boc-4- (3-nitro-6-pentafluoroethyl-phenoxymethyl)- piperidine as a light yellow thick oil.
Preparation XXXVI-4- (3-nitro-6-pentafluoroethyl- phenoxymethyl)-piperidine 4- (3-Nitro-6-pentafluoroethyl-phenoxymethyl)-piperidine was prepared from 1-Boc-4- (3-nitro-6-pentafluoroethyl- phenoxymethyl)-piperidine by a procedure similar to that described in the preparation of 2- (3-nitro-5- trifluoromethyl-phenoxymethyl)-pyrrolidine.
Preparation XXXVII-1-methyl-4- (3-nitro-6-pentafluoroethyl- phenoxymethyl)-piperidine 4- (3-Nitro-6-pentafluoroethyl-phenoxymethyl)-piperidine (316.5 mg) was dissolved in 2.7 mL acetonitrile, then added 37% formaldehyde/H2O (360 ul) and then NaBH3CN (90 mg).
Upon addition of NaCNBH3 the reaction exothermed slightly.
The reaction was stirred at RT and pH was maintained at-7 by addition of drops of glacial acetic acid. After about 1 h, the mixture was concentrated in vacuo, treated with 8 mL 2N KOH and extracted two times with 10 mL Et20. The organic layers were washed with 0.5N KOH and then the combined organic layers were extracted two times with IN HC1. The aqueous layer was basified with solid KOH and extracted two times with Et20. This organic layer was then washed with brine/lN NaOH, dried over NazS04, filtered, concentrated in vacuo and dried under high vacuum to give pure compound.
Preparation XXXVIII-1-Isopropyl-4-(5-nitro-2- pentafluoroethyl-phenoxymethyl)-piperidine
Dissolved 4- (5-nitro-2-pentafluoroethyl-phenoxymethyl)- piperidine (646 mg) in 1,2-dichloroethane (6.4 ml), then added acetone (136 ul), NaBH (OAc) 3 (541 mg) and finally acetic acid (105 ul). Stirred the cloudy yellow solution under N2 at RT overnight. Added another 130 uL acetone and stirred at RT over weekend. Quenched the reaction with 30 mL N NaOH/H20 and stirred 10 min. Extracted with Et20 and the organic layer was brine-washed, dried over Na2SO4, filtered and concentrated in vacuo.
Dried under high vacuum for several h to obtain 1-isopropyl-4- (5-nitro-2- pentafluoroethyl-phenoxymethyl)-piperidine as a yellow orange solid.
The following compounds were prepared similarly to the procedure outlined above: a) 3,3-Dimethyl-l- (l-methyl-piperidin-4-yl)-6-nitro-2, 3 dihydro-lH-indole was prepared using 1-methyl-piperidin
4-one. M+H 290; Calc'd 289.4. b) 3,3-Dimethyl-1- (1-Boc-piperidin-4-ylmethyl)-6-nitro-2,3 dihydro-lH-indole using 1-Boc-4-formyl-piperidine.
Preparation XXXIX-3,3-Dimethyl-l- (l-methyl-piperidin-4ylmethyl)-6-nitro-2,3-dihydro-1H-indole 3,3-Dimethyl-1-piperidin-4-ylmethyl-6-nitro-2,3-dihydro-lHindole was treated with an excess of formaldehyde and
NaBH (OAc) 3 and stirred overnight at RT. The reaction was quenched with MeOH and concentrated in vacuo. The residue was partitioned between EtOAc and 1N NaOH. The organic layer was removed, washed with brine, dried (Na2SO4), filtered and concentrated to provide the compound.
Preparation XL- (S) 2- (5-Nitro-2-pentafluoroethyl- phenoxymethyl)-oxirane
Combined 5-nitro-2-pentafluoromethylphenol (2.69 g), DMF (25 ml) K2CO3 (3.03 g) and (S) toluene-4-sulfonic acid oxiranylmethyl ester (2.27 g) and stirred the mixture at 90 C.
After about 4 hours, the mix was cooled, diluted with EtOAc, washed with H2O, 1N NaOH (2x), 1N HC1 and then with brine.
Dried over Na2SO4, filtered and concentrated in vacuo.
Purified the crude on silica gel column with 5% EtOAc/hexane and drying under high vacuum provided the (S)-2- (5-nitro-2- pentafluoroethyl-phenoxymethyl)-oxirane.
The following compounds were prepared similarly to the procedure outlined above: a) (R)-2- (5-Nitro-2-pentafluoroethyl-phenoxymethyl)-oxirane.
Preparation XLI- (S) 2-Chloro-N- [3- (2-hydroxy-3-pyrrolidin 1-yl-propoxy)-4-pentafluoroethyl-phenyl]-nicotinamide (S) 2-Chloro-N- [4- (2-oxiranylmethoxy-)-3-pentafluoroethyl- phenyl]-nicotinamide (1.11 g) in a sealed tube and added pyrrolidine (285 gel). Stirred after sealing tube at 60 C.
After 12 h, the mix was concentrated in vacuo and purified on a silica gel column (5: 95: 0.5 MeOH: CH2Cl2 : NH40H-8 : 92: 1,
MeOH: CH2Cl2 : NH40H). Concentrated in vacuo and dried under high vacuum to obtain pure compound.
The following compounds were prepared similarly to the procedure outlined above: a) (R) 1- (5-Nitro-2-pentafluoroethyl-phenoxy)-3-pyrrolidin- 1-yl-propan-2-ol.
Preparation XLII-5-nitro-2-trifluoromethylanisole
Cooled 140 mL pyridine in a large salable vessel to-40 C.
Bubbled in trifluoromethyl iodide from a gas cylinder which had been kept in freezer overnight. After adding ICF3 for 20 min, added 2-iodo-5-nitroanisole (24.63 g) and copper powder (67.25 g). Sealed vessel and stirred vigorously for 22 h at 140 C After cooling to-50 C, carefully unsealed reaction vessel and poured onto ice and Et20. Repeatedly washed with EtzO and H2O. Allowed the ice-Et20 mixture to warm to RT. Separated layers, washed organic layer with 1N
HC1 (3x), then brine, dried over Na2SO4, filtered and concentrated in vacuo.
Eluted material through silica gel plug (4. 5: 1 Hex: CH2Cl2) to provide 5-nitro-2trifluoromethylanisole.
Preparation XLIII - 1-[2-(5-nitro-2 trifluoromethylphenoxy) ethyl J pyrrolidine 1- [2- (5-Nitro-2-trifluoromethylphenoxy) ethyl]-pyrrolidine was prepared from 5-nitro-2-trifluoromethyl-phenol and 1- (2- chloroethyl) pyrrolidine by a procedure similar to that described for 1-l2-(2-tert-butyl-5-nitro-phenoxy)-ethyl]- piperidine.
Preparation XLIV-1- [2- (5-Nitro-2-pentafluoroethyl- phenoxy)-ethyl]-piperidine 1- [2- (5-Nitro-2-pentafluoroethyl-phenoxy)-ethyl]-piperidine was prepared from 5-nitro-2-pentafluoroethylphenol and 1- (2- chloroethyl) piperidine by a procedure similar to that described in the preparation of 1- [2- (2-tert-butyl-5-nitro- phenoxy)-ethyl]-piperidine.
Preparation XLV-3- (1-Boc-pyrrolidin-2-ylmethoxy)-4- pentafluoroethyl-phenylamine 3- (2-Pyrrolidin-1-yl-methoxy)-4-trifluoromethyl-phenylamine was prepared from 1- [2- (5-nitro-2- trifluoromethylphenoxy) methyl]-pyrrolidine by a procedure similar to that described in the preparation of 1-Boc-4- (3- amino-5-trifluoromethyl-phenoxy)-piperidine.
Preparation XLVI - 2-Chloro-N-[3-(2-pyrrolidin-1-yl-ethoxy)4-trifluoromethyl-phenyl]-nicotinamide 2-Chloro-N- [3- (2-pyrrolidin-1-yl-ethoxy)-4-trifluoromethyl- phenyl]-nicotinamide was prepared from 3- (2-pyrrolidin-1-yl- ethoxy)-4-trifluoromethyl-phenylamine and 2-chloropyridine3-carbonyl chloride by a procedure similar to that described in the preparation of I-Boc-4-f3- [ (2-chloro-pyridine-3- carbonyl)-amino]-5-trifluoromethyl-phenoxy}-piperidine.
Preparation XLVII- (R) Acetic acid 2- (5-nitro-2- pentafluoroethyl-phenoxy)-1-pyrrolidin-1-ylmethyl-ethyl ester
Dissolved 1- (5-nitro-2-pentafluoroethyl-phenoxy)-3- pyrrolidin-1-yl-propan-2-ol (3.5 g) in CH2Cl2 (15 ml), added TEA (2.55 ml) and cooled to 0 C. Acetyl chloride (781.3 gl) was added dropwise, forming a suspension. The mixture was warmed to RT and stirred for 1. 5 h. Additional acetyl chloride (200 y1) was added and the mix was stirred for another h.
The mixture was diluted with CH2C12 and washed with sat. NaHC03. The organic layer was removed, washed with brine and back extracted with CH2Cl2. Dried the combined organic layers over Na2SO4, filtered and concentrated in vacuo. The residue was purified over silica gel column (5: 94.5: 0.5 MeOH : CH2Cl2 : NH40H) to provide acetic acid 2- (5-nitro-2-pentafluoroethyl-phenoxy)-1-pyrrolidin-lylmethyl-ethyl ester as a yellow brown oil.
The following compounds were prepared similarly to the procedure outlined above: a) (R) Acetic acid 2- (5-amino-2-pentafluoroethyl-phenoxy)-l- pyrrolidin-1-yl-methyl-ethyl ester. b) 1- (2, 2-Dimethyl-6-nitro-2,3-dihydro-benzo [1,4] oxazin-4 yl)-ethanone. M-NO2 206.4; Calc'd 250.1.
Preparation XLVIII- (R) 2-Chloro-N- [3- (2-hydroxy-2- pyrrolidin-1-yl-propoxy)-4-pentafluoroethyl-phenyl]- nicotinamide (R) Acetic acid 2-{5-[(2-chloro-pyridine-3-carbonyl)-amino] 2-pentafluoroethyl-phenoxy}-1-pyrrolidin-1-yl-ethyl ester (408 mg) was dissolved in MeOH (15 ml) and NH40H (6 ml) was added and the mixture was stirred at RT for 6 h. The reaction was concentrated in vacuo and dried under high vacuum. The residue was purified over silica gel column (8: 92: 0.6 MeOH : CH2Cl2:NH4OH). The purified fractions were concentrated in vacuo and dried again to provide (R)-2 chloro-N- [3- (2-hydroxy-2-pyrrolidin-1-yl-ethoxy)-4- pentafluoroethyl-phenyl]-nicotinamide as a white foam.
Preparation XLIX-2-Dimethylamino-1- (3, 3-dimethyl-6-nitro- 2,3-dihydro-indol-1-yl)-ethanone 3,3-Dimethyl-6-nitro-2,3-dihydro-lH-indole (5 g) was dissolved in DMF (100 ml) and HOAt (3.89 g) dimethylaminoacetic acid (5.83 g) and EDC (3.89 g) were added. The reaction was stirred overnight. The mixture was diluted with CH2C12 (1L) and washed with sat'd NaHC03 (3x200 ml). The organic layer was washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by flash chromatography (Si02, EtOAc to 5% MeOH/EtOAc) to afford the title compound.
The following compounds were prepared similarly to the procedure outlined above: a) 1- (3, 3-Dimethyl-6-nitro-2,3-dihydro-indol-1-yl)-2- (N-Boc amino)-ethanone.
Preparation L-1- (6-Amino-3, 3-dimethyl-2,3-dihydro-indol-l yl)-2-(N-Boc-amino)-ethanone 1- (3, 3-Dimethyl-6-nitro-2, 3-dihydro-indol-1-yl)-2- (N-Boc- amino)-ethanone (3.9 g) was dissolved in EtOH (30 ml) and Fe powder (3.1 g) NH4C1 (299 mg) and H20 (5 ml) were added. The reaction was stirred at 80 C overnight. The reaction was filtered through Celtes and evaporated off the MeOH. The residue was partitioned between CH2Cl2 and sat'd NaHCO3. The organic layer was removed, washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by flash chromatography (Si02, 25% EtOAc/hexane).
The purified fractions were concentrated in vacuo to afford the compound as a white powder.
The following compounds were prepared similarly to the procedure outlined above: a) 1- (6-Amino-3, 3-dimethyl-2,3-dihydro-indol-1-yl)-2 dimethylamino-ethanone. b) 3,3-Dimethyl-1- (1-methyl-piperidin-4-ylmethyl)-2,3 dihydro-lH-indol-6-ylamine. c) 3- (4-Methyl-piperazin-1-ylmethyl)-4-pentafluoroethyl- phenylamine. M+H 324.2. Calc'd 323. d) 3,3-Dimethyl-1-(1-methyl-piperidin-4-yl)-2, 3-dihydro-lH indol-6-ylamine. M+H 259.6 ; Calc'd 259.3. e) 3,3-Dimethyl-1,1-oxo-2,3-dihydro-lH-116 benzo [dlisothiazol-6-ylamine f) 1,1,4,4-Tetramethyl-1,2,3,4-tetrahydro-naphth-6-ylamine. g) 3,3-Dimethyl-l- (l-Boc-piperidin-4-ylmethyl)-2,3-dihydro lH-indol-6-ylamine.
Preparation LI-2-Boc-4, 4-dimethyl-7-nitro-1, 2,3,4 tetrahydro-isoquinoline 4,4-Dimethyl-7-nitro-1,2,3,4-tetrahydro-isoquinoline (150 mg) was dissolved with CH2Cl2 (3 ml) DIEA (100 ul) DMAP (208 mg and Boc20 (204 mg) and the mixture was stirred for 6 h at
RT. The reaction was diluted with CH2C12, washed with sat'd NaHC03 and dried over MgS04, filtered and concentrated to provide the compound which was used without further purification.
The following compounds were prepared similarly to the procedure outlined above substituting AczO : a) 1- (4,4-Dimethyl-7-nitro-3,4-dihydro-lH-isoquinolin-2-yl) ethanone. M+H 249.3.
Preparation LII-2-Bromo-N- (4-methoxy-benzyl)-5-nitro- benzamid
PMB-amine (5.35 ml) in CH2C12 (130 ml) was slowly added to 2-bromo-5-nitro-benzoyl chloride (10.55 g) and NaHC03 (9.6 g) and the mixture was stirred at RT for 1 h. The mixture was diluted with CH2Cl2 (1 L), filtered, washed with dilute HC1, dried, filtered again, concentrated and dried under vacuum to provide the compound as a white solid. M+H 367.
Calc'd 366.
Preparation LIII-2-Bromo-N-(4-methoxy-benzyl)-N-(2-methylallyl)-5-nitro-benzamide
To a suspension of NaH (1.22 g) in DMF (130 ml) was added 2 bromo-N- (4-methoxy-benzyl)-5-nitro-benzamide (6.2 g) in DMF (60 ml) at-78C. The mixture was warmed to 0 C, 3-bromo-2methyl-propene (4.57 g) was added and the mixture was stirred for 2 h at 0 C. The reaction was poured into ice water, extracted with EtOAc (2x400 ml), dried over MgSO4, filtered and concentrated to a DMF solution which was used without further purification.
*Preparation LIV-of 2-(4-Methoxy-benzyl)-4, 4-dimethyl-7 nitro-3, 4-dihydro-2H-isoquinolin-l-one 2-Bromo-N- (4-methoxy-benzyl)-N- (2-methyl-allyl)-5-nitro- benzamide (23. 4 mmol) was dissolved in DMF (150 ml) and Et4NCI (4.25 g), HCO2Na (1. 75 g) and NaOAc (4.99 g) were added. N2 was bubbled through the solution for 10 min, then
Pd (OAc) 2 (490 mg) was added and the mixture was stirred overnight at 70 C. The mixture was extracted with EtOAc, washed with sat'd NH4Cl, dried over MgSO4, filtered and concentrated until the compound precipitated as a white solid.
The following compounds were prepared similarly to the procedure outlined above: a) 3,3-Dimethyl-6-nitro-2,3-dihydro-benzofuran was prepared from 1-bromo-2-(2-methyl-allyloxy)-4-nitro-benzene. b) 3,9,9-Trimethyl-6-nitro-4,9-dihydro-3H-3-aza-fluorene was prepared from 4- [l- (2-bromo-4-nitro-phenyl)-l-methyl ethyl]-1-methyl-1, 2,3,6-tetrahydro-pyridine.
Preparation LV-4, 4-Dimethyl-7-nitro-3, 4-dihydro-2H isoquinolin-1-one 2- (4-Methoxy-benzyl)-4,4-dimethyl-7-nitro-3,4-dihydro-2H isoquinolin-1-one (2.0 g) was dissolved in CH3CN (100 ml) and H20 (50 ml) and cooled to 0 C. CAN (9.64 g) was added and the reaction was stirred at 0 C for 30 min, then warmed to RT and stirred for 6 h. The mixture was extracted with
CH2Cl2 (2x300 ml) washed with sat'd NH4C1, dried over MgSO4, filtered and concentrated.
The crude material was recrystallized in CH2Cl2/EtOAc (1: 1) to give 4,4-dimethyl-7nitro-3,4-dihydro-2H-isoquinolin-l-one as a white solid.
Preparation LVI-4, 4-Dimethyl-7-nitro-1, 2,3,4-tetrahydro isoquinoline 4,4-Dimethyl-7-nitro-3,4-dihydro-2H-isoquinolin-1-one (230 mg) was dissolved in THF (10 ml) and BH3Me2S (400 ul) was added and the reaction was stirred overnight at RT. The reaction was quenched with MeOH (10 ml) and NaOH (200 mg) and heating at reflux for 20 min. The mixture was extracted with EtOAc, washed with sat'd NH4Cl, extracted with 10% HC1 (20 ml). The acidic solution was treated with 5N NaOH (15 ml), extracted with EtOAc (30 ml) dried, filtered and evaporated to give the compound as a yellow solid. M+H 207.2, Calc'd 206.
The following compounds were prepared similarly to the procedure outlined above: a) 4-Boc-2,2-dimethyl-6-nitro-3,4-dihydro-2Hbenzo [1,4] oxazine.
Preparation LVII-2-Bromomethyl-4-nitro-l-pentafluoroethyl- benzene 2-Methyl-4-nitro-l-pentafluoroethyl-benzene (2.55 g) was dissolved in CC14 (30 ml) and AIBN (164 mg) and NBS (1.96 g) were added. The reaction was heated to reflux and stirred for 24 h. The mix was diluted with CH2Cl2, washed with sat'd NaHC03, dried over MgS04 and concentrated to give the compound as an oil which was used without further purification.
Preparation LVIII-1-Methyl-4- (5-nitro-2-pentafluoroethyl- benzyl)-piperazine 2-Bromomethyl-4-nitro-1-pentafluoroethyl-benzene (2.6 g) was added to N-methylpiperazine (5 ml) and stirred at RT for 3 h. The mixture was filtered and the filtrate was treated with 1-chlorobutane, extracted with 2N HC1 (100 ml). The acidic solution was treated with 5N NaOH (6 ml) then extracted with EtOAc. The organic layer was removed, dried over MgSO4 and concentrated to give the compound as an oil.
The following compounds were prepared similarly to the procedure outlined above: a) 4- (5-Nitro-2-pentafluoroethyl-benzyl)-morpholine.
Preparation LIX-1-Boc-4- (5-nitro-2-pentafluoroethyl- benzyl)-piperazine.
2-Bromomethyl-4-nitro-1-pentafluoroethyl-benzene (2.5 g) was dissolved in CH2Cl2 and added to N-Boc-piperazine (2.5 g) and NaHC03 (1 g) and stirred at RT overnight. The mixture was diluted with CH2Cl2 (100 ml), washed with sat'd NH4Cl, dried over MgS04, filtered and concentrated. The residue was purified by silica gel chromatography (hexane, CH2Cl2 : hexane 2: 8) to give the compound as an yellow solid.
Preparation LX- (4-Boc-piperazin-1-yl)- (3-nitro-5- trifluoromethyl-phenyl)-methanone
A mixture of 3-nitro-5-trifluoromethyl-benzoic acid (4.13 g), 4-Boc-piperazine (2.97 g), EDC (3.88 g), HOBt (2.74 g),
DIEA (3.33 ml) in CH2C12 (120 ml) was stirred at RT for 3 h.
The mixture was diluted with CH2Cl2 (100 ml), washed with sat'd NH4Cl, dried over MgSO4, filtered and concentrated.
The residue was purified by silica gel chromatography (hexane, CH2Cl2 : hexane 1: 2) to give the compound as a white solid.
Preparation LXI-1-Boc-4-(3-nitro-5-trifluoromethyl- benzyl)-piperazine (4-Boc-piperazin-1-yl)- (3-nitro-5-trifluoromethyl-phenyl)- methanone (403 mg) was dissolved in THF (6 ml) and BH3Me2S (300 Al) was added and the reaction was stirred for 3 h at 60 C and 2 h at RT. The reaction was quenched with MeOH (5 ml) and NaOH (100 mg) and stirred at RT for 1 h. The mixture was concentrated and dissolved in CH2Cl2, washed with sat'd NH4Cl/NaHCO3, dried (MgSO4), filtered and evaporated to give the compound as an oil. M+H 390.3.
Preparation LXII-2-Ethyl-4-aminomethyl pyridine
To a solution of 2-ethyl-4-thiopyridylamide (10 g) in MeOH (250 ml) was added Raney 2800 Nickel (5 g, Aldrich) in one portion. The mixture was stirred at RT for 2 days then at 60 C for 16 h. The mixture was filtered, concentrated to provide the desired compound.
Preparation LXIII-N-Boc- [2- (4-morpholin-4-yl-butyl)- pyrimidin-4-ylmethyl]-amine N-Boc- (2-chloropyrimidine)-methylamine (663 mg) and 4 (aminopropyl) morpholine (786 mg) were dissolved in MeOH and concentrated in vacuo. The residue was heated at 100 C for 15 min, forming a solid which was dissolved in CH2CIz/MeOH then concentrated again and heated 15 min more.
Concentrated in vacuo and dried under high vacuum.
Triturated with a small amount of IpOH and allowed to settle over a weekend. Filtered, rinsing with a small amount of IpOH to provide the compound as a white solid.
The following compounds were prepared similarly to the procedure outlined above: a) (4-Bocaminomethyl-pyrimidin-2-yl)- [2- (1-methyl- pyrrolidin-2-yl)-ethyl]-amine. M+H 336.5; Calc'd 335.45.
Preparation LXIV-2-fluoronicotinic acid
In a flame dried 3-necked round bottom flask equipped with a dropping funnel and thermometer, under N2, THF (250 ml) was added via cannula. LDA (2M in cyclohexane, 54 ml) was added via cannula as the flask was cooled to-78 C. At-78 C, 2 fluoropyridine (8.87 ml) was added dropwise over 10 min. The reaction was stirred for 3 h. Condensation was blown off (with N2) a few cubes of solid COz and they were added to the mixture. The mixture was warmed to RT once the solution turned yellow, and it was stirred overnight. The reaction was cooled to 0 C and the pH was adjusted to-2. 5 with 5N HC1. The mixture was concentrated in vacuo and extracted with EtOAc.
The EtOAc layer was washed with brine, dried over MgSO4, filtered and concentrated to dryness. The resulting solid was slurried in EtOAc (100 ml), filtered, washed with cold EtOAc and dried at 50 C for 1 h to afford 2-fluoronictinic acid. M+H 142.1; Calc'd 141.0.
Preparation LXV-4-cyano-2-methoxypyridine
Under a stream of N2 and with cooling, Na metal (2.7 g) was added to MeOH (36 ml) with a considerable exotherm. After the Na is dissolved, a solution of 2-chloro-4-cyanopyridine (15 g) in dioxane: MeOH (1: 1,110 ml) was added via dropping funnel over a 10 min period. The reaction was heated to reflux for 3.5 h then cooled at-10 C overnight. Solid was filtered off and the solid was washed with MeOH. The filtrate was concentrated to-60 ml and H2O (60 ml) was added to redissolve a precipitate. Upon further concentration, a precipitate formed which was washed with H20. Further concentration produced additional solids.
The solids were combined and dried in vacuo overnight at 35 C to provide 4-cyano-2-methoxypyridine which was used as is.
Preparation LXVI- (2-methoxypyridin-4-yl) methylamine 4-Cyano-2-methoxypyridine (1.7 g) was dissolved in MeOH (50 ml) and conc. HC1 (4.96 ml) was added. Pd/C (10%) was added and H2 was added and let stand overnight. The solids were filtered through Celitee and the cake was washed with MeOH (-250 ml). Concentration in vacuo produced an oil which was dissolved in MeOH (¯20 ml). Et20 (200 ml) was added and stirred for 1 h. The resulting precipitate was filtered and washed with Et2O to afford (2-methoxypyridin-4yl) methylamine (hydrochloride salt) as an off-white solid.
Preparation LXVII-2- (4-Amino-phenyl)-2-methyl-propionic acid methyl ester 2-Methyl-2- (4-nitro-phenyl)-propionic acid methyl ester (2. 1 g) was dissolved in THF (70 ml) and acetic acid (5 ml) and
Zn (10 g) were added. The mixture was stirred for 1 h and filtered through Celte@. The filtrate was rinsed with EtOAc and the organics were evaporated to a residue which was purified on silica gel chromatography (40% EtOAc/hexanes) to provide the desired compound as a yellow oil. M+H 194.
Preparation LXVIII-1- (2-tert-Butyl-phenyl)-4-methyl- piperazin 2-tert-Butyl-phenylamine and bis- (2-chloro-ethyl)methylamine were mixed together with K2CO3 (25 g), NaI (10 g) and diglyme (250 mL) and heated at 170 C for 8 h. Cooled and filtered solid and evaporated solvent. Diluted with
EtOAc, washed with NaHC03 solution, extracted twice more with EtOAc, washed with brine, dried over Na2SO4 and evaporated to give the compound as a dark solid.
The following compounds were prepared similarly to the procedure outlined above: a) 1-Bromo-2-(2-methyl-allyloxy)-4-nitro-benzene was prepared from methallyl bromide.
Preparation LXIX 3- (1-Methyl-1, 2,3,6-tetrahydro-pyridin-4 yl)-5-triEluoromethyl-phenylamine 3- (5, 5-Dimethyl- [1, 3,2] dioxaborinan-2-yl)-5-trifluoromethylphenylamine (8.8g, 0.032mol) was added to trifluoromethanesulfonic acid 1-methyl-1, 2,3,6-tetrahydro-pyridin-4yl ester (7.91g, 0.032mol) and 2N Na2CO3 aqueous solution (25mL) was bubbled through N2 for 5 min. Pd (PPh3) 4 (3.7g, 3.2mmol) was added and the reaction was heated to 80 C for 16 h. The reaction was cooled to RT and diluted with EtzO (100 mL). The mixture was filtered through Celitee and the filtrate was washed with NaHC03 aqueous solution (25 ml) followed by brine (25 mL).
The organic phase was dried over Na2SO4 and concentrated in vacuo. The desired product was isolated by passing through silica gel column chromatography (EtOAc, then (2M NH3) in MeOH/EtOAc) to provide a yellow oil.
Preparation LXX-3, 3-Dimethyl-6-nitro-2, 3-dihydrobenzo [d] isothiazole 1,1-dioxide 3,3-Dimethyl-2,3-dihydro-benzo [d] isothiazole 1,1-dioxide was added to KNO3 in H2SO4 cooled to 0 C and stirred for 15 min.
The reaction was warmed to RT and stirred overnight. The mix was poured into ice and extracted with EtOAc (3x), washed with H20 and brine, dried and evaporated to give the product which was used without further purification.
The following compounds were prepared similarly to the procedure outlined above : a) 1, 1, 4,4-Tetramethyl-6-nitro-1,2,3,4-tetrahydronaphthalene
Preparation LXXI-3-(1-Methyl-1, 2,3,4-tetrahydro-pyridin-4 yl)-5-trifluoromethyl-phenylamine 3- (5, 5-Dimethyl- [1, 3,2] dioxaborinan-2-yl)-5-trifluoromethyl- phenylamine (1.2 g) was added to trifluoro-methanesulfonic acid 1-methyl-1, 2,3, 6-tetrahydro-pyridin-4-yl ester (1.0 g), LiCl (500 mg, Aldrich), PPh3 (300 mg, Aldrich) and 2M Na2CO3 aqueous solution (6 ml) and was bubbled with N2 for 5 min.
Pd (PPH3) 4 (300 mg, Aldrich) was added and the reaction was heated to 80 C for 16 h. The reaction was cooled to RT and diluted with Et2O (100 mL). The mixture was filtered through Celiez and the filtrate was washed with NaHC03 aqueous solution (25 ml) followed by brine (25 mL). The organic phase was dried over Na2SO4 and concentrated in vacuo. The desired compound was isolated by silica gel column chromatography (EtOAc 10% (2M NH3) in MeOH/EtOAc) to provide yellow oil. M+H 257.2; Calc'd 256.1.
Preparation LXXII-Trifluoromethylsulfonic acid 1-methyl- 1,2,3,6-tetrahydro-pyridin-4-yl ester
In a three-necked round bottom flask equipped with a thermometer and an additional funnel was placed anhydrous
THF (200 mL) and 2M LDA (82.8 mL). The solution was cooled to-78 C and a solution of 1-methyl-piperidin-4-one (20 mL) in anhydrous THF (70 mL) was added drop-wise. The reaction was warmed to-10 C over 30 min and cooled down again to 78 C. Tf2NPh (54.32 g) in 200 mL of anhydrous THF was added through the additional funnel over 30 min and anhydrous THF (30 mL) was added to rinse the funnel. The reaction was warmed to RT and the reaction solution was concentrated in vacuo.
The residue was dissolved in Et20 purified on neutral A1203 column chromatography (Et20 as elutant). The product was obtained as orange oil. (20 g)
Preparation L2XIII-3-(5, 5-Dimethyl-E1, 3,2] dioxaborinan-2 yl)-5-trifluoromethyl-phenylamine
N2 was bubbled through a solution of 3-bromo-5trifluoromethyl-phenylamine (2.38 g), 5,5,5', 5'-tetramethyl [2,2'] bi [ [1,3,2] dioxaborinanyl] (2.24 g, Frontier
Scientific) and KOAc (2.92 g), dppf (165 mg, Aldrich) in anhydrous dioxane (50 ml) for 2 min. PdCl2 (dppf) (243 mg,
Aldrich) was added and the reaction was heated to 80 C for 4 h.
After cooling to RT, the mix was diluted with 50 mL of Et20, filtered through Celite", and the filtrate was concentrated in vacuo. The residue was dissolved in Et20 (100 mL), washed with sat. NaHC03 aqueous solution (50 mL) followed by brine (50 mL). The organic phase was dried over
Na2SO4 and concentrated in vacuo. The residue was dissolved in 3: 2 Et20/Hex (100 mL), filtered through Celiez and the filtrate was concentrated in vacuo to afford a dark brown semi-solid.
Preparation LXXIV-1-Boc-3-Hydroxymethyl-azetidine
A solution of 1-Boc-azetidine-3-carboxylic acid (1.6 g) and
Et3N (2 ml) in anhydrous THF (60 ml) was cooled to 0 C.
Isopropyl chloroformate (1.3 g) was added via a syringe slowly; forming a white precipitate almost immediately. The reaction was stirred for 1 h at 0 C and the precipitate was filtered out. The filtrate was cooled to 0 C again and aqueous NaBH4 solution (900 mg, 5 ml) was added via pipette and stirred for 1 h. The reaction was quenched with NaHC03 solution (50 mL) and the product was extracted with EtOAc (200 mL). The organic phase was washed with brine (50 mL), dried over Na2SO4 and concentrated in vacuo. The residue was dissolved in EtOAc and passed through a short silica gel pad. Concentrating the filtrate in vacuo provided the compound as a light yellow oil.
Preparation DXXV-1-Boc-3-(3-nitro-5-trifluoromethyl- phenoxymethyl)-azetidine
A mixture of 1-Boc-3-methylsulfonyloxymethyl-azetidine (1. 47 g), 3-nitro-5-trifluoromethyl-phenol (1.15 g) and K2CO3 (1.15 g) in DMF (20 ml) at 80 C was stirred overnight. The reaction was cooled to RT and diluted with 25 mL of sat.
NaHC03 and 50 mL of EtOAc. The organic phase was separated and washed with brine (25 mL), dried over Na2SO4 and concentrated in vacuo. The crude compound was purified by column chromatography (50% EtOAc/hex).
Preparation LXXVI-2, 2-Dimethyl-6-nitro-3, 4-dihydro-2H beazoL141oxaziae 2,2-Dimethyl-6-nitro-4H-benzo [1, 4] oxazin-3-one was added to
BH3-THF complex (Aldrich) in THF with ice cooling. The mixture was heated to reflux for 2 h then carefully diluted with 12 mL of MeOH and heated to reflux for an additional 1 h. Concentrated HC1 (12 mL) was added and heated to reflux for 1 h. The mixture was concentrated and the resulting solid was suspended in a dilute aqueous solution of NaOH (1
M) and extracted with EtOAc (100 mL x 4). The organic layers were washed with H2O and dried over MgSO4.
Evaporation of solvent gave a yellow solid.
Preparation LXXVII-2,2,4-Trimethyl-6-nitro-4H benzo [1, 4] oxazin-3-one 2,2-Dimethyl-6-nitro-4H-benzo [1, 4] oxazin-3-one (1.1 g) was mixed with MeI (850 mg, Aldrich), K2CO3 (1.38 g, Aldrich) and DMF (30 ml, Aldrich) at 40 C for 48 h. The DMF was removed in vacuo and the residue was diluted with EtOAc (80 ml). The organic phase was washed with H2O (50 ml), aqueous Na2SO3 (50 ml) and brine (50 ml). The resulting solution was dried (MgS04) and concentrated to provide the compound which was used as is.
Preparation LXXVIII-2-Bromo-N- (2-hydroxy-5-nitro-phenyl)- 2-methyl-propionamide 2-Amino-4-nitro-phenol (3. 08 g, Aldrich) was stirred with
THF (30 ml, Aldrich) in an ice bath. 2-Bromo-2-methyl propionyl bromide (2.47 ml, Aldrich) and Et3N (2.0 g,
Aldrich) was slowly added via syringe. The mixture was stirred for 45 min then poured into ice. The aqueous phase was extracted by EtOAc (50 mL x 4). The organic layer was dried and concentrated. The desired product was crystallized from EtOAc. (Chem. Pharm. Bull 1996,44 (1) 103-114).
Preparation LXXIX-2, 2-Dimethyl-6-nitro-4H benzoLl, 4] oxazin-3-one 2-Bromo-N- (2-hydroxy-5-nitro-phenyl)-2-methyl-propionamide was mixed with K2CO3 in 20 mL of DMF and stirred overnight at 50 C. The reaction mixture was poured into ice water.
The precipitate was collected by filtration and washed with H2O. The crude compound was recrystallized from EtOH.
Preparation LXXX-4- [1- (2-Bromo-4-nitro-phenyl)-1-methyl- ethyl]-1-methyl-pyridinium iodide 1-Methyl-4- [1-methyl-1- (4-nitro-phenyl)-ethyl]-pyridinium (8 g) was dissolved in glacial HOAc (10 ml) then diluted with
H2SO4 (50 ml), then NBS (3.8 g) was added. After 1 h, additional NBS (1.2 g) was added, 30 min later another 0.5 g of NBS, then 15 min later 200 mg more NBS. After 1 h, the mixture was neutralized with NH40H (conc.) with ice bath cooling. The neutralized mixture was then concentrated and used as is.
Preparation LXXXI-4- (1- (2-Bromo-4-nitro-phenyl)-1-methyl- ethyl]-1-methyl-1, 2,3,6-tetrahydro-pyridine 4- [1- (2-Bromo-4-nitro-phenyl)-1-methyl-ethyl]-1-methyl- pyridiniumiodide was mixed with MeOH (400 ml) and CH2Cl2 (200 ml), then treated with NaBH4 (2. 5 g) in portions.
After stirring at RT for 2 h, the mixture was extracted with CH2Cl2 (300 mL x 3). The CH2Clz layer was washed with brine, dried over Na2SO4 and concentrated in vacuo, to provide the desired product.
Preparation LXXXII-I-Methyl-4-El-methyl-i- (4-nitro- phenyl)-ethyl]-pyridinium iodide 4- (4-nitrobenzyl) pyridine (64 g, 300 mmol) and Bu4NI (6 g, 16.2 mmol) were dissolved in CH2Cl2 (500 mL) and the solution was suspended with NaOH (aq. 5N, 450 mL). With vigorous stirring, MeI (213 g, 1500 mmol) was added. The resulting solution was placed under N2 and stirred vigorously at RT for 60 h until blue color disappears. (MS: M+=257). The reaction mixture was used in the next step without any further purification.
Preparation LXXXIII-1-Methyl-4- (4-nitrobenzyl)-1, 2,3,6tetrahydro-pyridine 1-Methyl-4- [1-methyl-1- (4-nitro-phenyl)-ethyl]-pyridinium was treated with DEA (100 mL) in MeOH (300 mL) for 2 h.
NaBH4 (19 g, 500 mmole) was added in small portions. The resulting mixture was stirred for 30 min at RT, then partitioned between CHzClz/H20 (500 mL/500 mL). The lower layer (organic) was collected and the upper layer was washed with CH2Cl2 (300 mL x 3). The combined organic layer was washed with brine then concentrated in vacuo. The residue was purified on a silica washed-column (7% TEA in EtOAc).
The desired fractions were combined and concentrated under vacuum to give the desired compound as a dark gray solid.
(MS: M+1=261).
Preparation LXXXIV-1-Boc-4-formylpiperidine 4A Molecular sieves were heated to 100 C and a vacuum was applied. They were cooled to RT and purged with N2. CH2Cl2 (420 ml) and CH3CN (40 ml), NMO (40 g) and 1-Boc-4- hydroxymethylpiperidine (50 g) were added and the mix was stirred for 5 min then cooled to 15 C. TPAP (4.1 g) is added and an exotherm was observed. The reaction was maintained at
RT with external cooling. The reaction was stirred at RT for 3 h, filtered, concentrated, diluted with 50%
EtOAc/hexanes and purified on a silica gel plug (50% EtOAc/hexanes). The eluant fractions were concentrated to afford a yellow oil.
Preparation LXXXV 2-Chloro-4-cyanopyridine 2-Chloro-4-cyanopyridine was prepared similar to the method described by Daves et al., J. Het. Chem., 1,130-32 (1964).
Preparation LXXXVI 4- (2-tert-Butyl-5-nitro-phenyl)-but-3-en- 1-ol
A mix of 1- (tert-butyl)-2-bromo-4-nitrobenzene (3.652 g),
TEA (5.92 ml), 3-buten-1-ol (5.48 ml), Pd (OAc) 2 (32 mg),
Pd (PPh3) 4 (327 mg) and toluene (40 ml) was degassed with nitrogen and heated in a sealed vessel for 16 h at 120 C.
The next day, the reaction mixture was cooled to RT, filtered, and concentrated in vacuo. The crude was eluted on a silica gel column with 15% to 22% EtOAc/hexanes gradient system to yield a yellow-brown oil.
Preparation LXXXVII 4- (2-tert-Butyl-5-nitro-phenyl)-but-3- enal 4- (2-tert-Butyl-5-nitro-phenyl)-but-3-en-l-ol (1.024 g) was dissolved in 10 ml of CH2C12 and added dropwise over 5 min to a-78 C mix of oxalyl chloride (0.645 ml), DMSO (0.583 ml), and 10 ml CH2C12. The reaction was stirred at-78 C for 1 h, then treated with a solution of TEA (1. 52 ml) in 7 ml CH2C12 and stirred at-78 C for an additional 25 min, then warmed to-30 C for 35 min. The reaction was treated with 50 ml of saturated aqueous NH4Cl, diluted with H20 and extracted with EtOAc.
The organic layer was brine-washed, dried over Na2SO4, filtered, and concentrated in vacuo to yield a yellow oil.
Preparation LXXXVIII 1- [4- (2-tert-Butyl-5-nitro-phenyl)-but- 3-enyll-pyrrolidine 4- (2-tert-Butyl-5-nitro-phenyl)-but-3-enal (895 mg) was dissolved in 40 ml THF, and to the solution was added pyrrolidine (0.317 ml). To the deep orange solution was added NaBH (OAc) 3 (1.151 g) and glacial AcOH (0.207 ml). The reaction was stirred at RT overnight, then treated with saturated aqueous NaHC03 and diluted with Et20 and some 1N
NaOH.
The layers were separated, and the organic layer was extracted with aqueous 2N HC1. The acidic aqueous layer was basified to pH > 12 with 6 N NaOH, extracted with Et20, brinewashed, dried over Na2SO4, filtered, and concentrated in vacuo to provide 1- [4- (2-tert-butyl-5-nitro-phenyl)-but-3- enyl]-pyrrolidine as a orange-brown oil.
Preparation LXXXVIX N-Boc- (2-chloropyrimidin-4-yl)- methylamine
To 2-chloropyrimidine-4-carbonitrile [2.5 g, prepared by the procedure of Daves et. al. [J. Het. Chem. 1964, 1,130-132)] in EtOH (250 ml) under N2 was added Boc20 (7.3 g). After the mixture was briefly placed under high vacuum and flushed with N2, 10% Pd/C (219 mg) was added. H2 was bubbled though the mixture (using balloon pressure with a needle outlet) as it stirred 4.2 h at RT.
After filtration through Celte', addition of 1.0 g additional BoczO, and concentration, the residue was purified by silica gel chromatography (5: 1 4: 1 hexanes/EtOAc) to obtain N-Boc- (2-chloropyrimidin-4-yl)- methylamine.
Preparation XC Methanesulfonic acid 1-Boc-azetidin-3- ylmethyl ester
To a solution of (1-Boc-azetidin-3-yl)-methanol (1.06 g, 5.7 mmol), TEA (1.18 mL, 8.52mmol) in CH2Cl2 at 0 C was added MeSO2Cl (0.53 mL, 6.82 mmol) via a syringe. The reaction was warmed to RT over 2 h and stirring was continued at RT for 2 h. The white solid formed was removed by filtration and the filtrate was washed with 25 mL of H2O. The organic phase was dried over Na2SO4, and concentrated in vacuo to afford yellow oil.
Preparation XCI 3,9,9-Trimethyl-6-nitro-4,9-dihydro-3H-3 aza-fluorene 4- [1- (2-Bromo-4-nitro-phenyl)-1-methyl-ethyl]-1-methyl- 1,2,3,6-tetrahydro-pyridine (9 g), Pd (OAc) 2 (900 mg), and
DIEA (15 mL) was dissolved in DMF (300 mL), and heated to 80 C overnight. Solvents were removed in vacuo. The residue was partitioned between CH2Cl2/NaHC03 (sat, aq.). The CH2Cl2 layer was washed with brine, dried over Na2S04 and concentrated in vacuo. The residue was purified via flash chromatography on silica to give the desired compound.
(MS:
M+H=257)
LCII 3,9,9-Trimethyl-2,3,4,4a, 9,9a-hexahydro-lH-3-aza fluoren-6-ylamine (156) 3,9,9-Trimethyl-6-nitro-4,9-dihydro-3H-3-aza-fluorene (700 mg) was dissolved in EtOH (20 mL) with aqueous HC1 (IN, 5 mL) and suspended with Pd/C (10%, 100 mg). The flask was capped with a balloon filled with H2. The reaction was completed in 6 h at RT. The reaction mixture was filtered through a layer of Celiez with MeOH. The combined filtrate was concentrated to give desired compound. (MS: M+H=231).
Example 1
EMI164.1
N- (4-Chlorophenyl) {3- [benzylamino] (2-pyridyl)} carboxamide
Step A-Preparation of (3-amino- (2-pyridyl))-N- (4- chlorophenyl) carboxamide
To a mixture of 3-aminopicolinic acid (552 mg, 4.0 mmol, 1.0 eq) and 4-chloroaniline (1.02 g, 8.0 mmol, 2.0 eq) in CH2Cl2 was added EDC (1.2 eq), HOBt (0.5 eq) and TEA (1.2 eq). The reaction was stirred at RT overnight, diluted with CH2Cl2, washed with NH4Cl, dried over Na2SO4, filtered and concentrated in vacuo, purified by flash chromatography (4% MeOH/CH2Cl2) to give the amide as an white solid. MS (ES+) : 248 (M+H) + ; (ES-): 246 (M-H)-.
Step B-Preparation of N-(4-chlorophenyl){3-[(4phenylmethyl) amino] (2-pyridyl)} carboxamide
To a mixture of the amide from Step A (1.0 eq.) and 4benzaldehyde (1.0 eq.) in CH2C12 was added NaBH (OAc) 3 (1.5 eq). The resulted mixture was stirred for 2 days at RT, diluted with CH2C12, washed with saturated NH4C1 solution, dried over Na2SO4, filtered and concentrated. The crude material was purified through flash chromatography (4% MeOH/CH2C12) to give the title compound as an white solid.
MS (ES+) : 338 (M+H) + ; (ES-) : 336 (M-H)-. Calc'd for C19H16ClN3O - 337. 81.
The following compounds (Examples 2-4) were analogously synthesized by the method described in Example 1.
Example 2
EMI165.1
N-(4-Chlorophenyl)(3-{[(4-nitrophenyl)metyl]amino} (2 pyridyl))-carboxamide
MS (ES+) : 383 (M+H) + ; (ES-) : 381 (M-H)-. Calc'd for
C19H15ClN4O3 - 382.81.
Example 3
EMI165.2
(2-[[(4-methoxphenyl)methyl]amino](2-pyridnyl))-N-(3-fluoro
4-methylphenyl) carboxamide
MS (ES+): 366 (M+H) +. Calc'd for C2lH20FN302-365. 41.
Example 4
EMI166.1
(6-Chloro-2- [ (4-methoxyphenyl) methyl] amino [ (3-pyridyl))-N- (3-fluoro-4-methylphenyl) carboxamide
Step A-Preparation of 6-chloro-2- [ [ (4- methoxyphenyl) methyl] amino] pyridine-3-carboxylic acid
A mixture of 2,6-dichloronicotinic acid (1 g, 5.5 mmol) and 4-methoxybenzylamine (1 ml, 7.7 mmol) in a sealed tube was heated at 150 C for 3h and 120 C for 16h. The resulting solution was cooled to RT and CH2Cl2 (10 ml) was added.
A precipitate which formed was filtered and washed with CH2Cl2 (20 ml). The filtrate was concentrated, dissolved in EtOAc (30 ml), and extracted with NaOH (2N, 3x15 ml). The combined aqueous solution was acidified with HC1 (IN) to pH 7, and extracted with CH2Cl2 (3x20 ml). The combined extracts were dried and concentrated. The compound was purified on Si02 column (eluted with a solution of hexane-EtOAc 2: 1) to give a yellowish solid.
Step B-Preparation of (6-chloro-2-[[(4methoxyphenyl) methyl] amino] (3-pyridyl))-N- (3-fluoro-4- methylphenyl) carboxamide
A mixture of 6-chloro-2- [(4-methoxyphenyl) methyl] amino] pyridine-3-carboxylic acid from Step A (100 mg, 0.34 mmol), EDC (107 mg, 0.56 mmol), HOBt (51 mg, 0.37 mmol) and
DIEA (0.1 ml) in CH2Cl2 (10 ml) was stirred at RT under N2 atmosphere for 16 h. It was taken up in CH2Cl2 and washed with H2O then aqueous NaHCO3. The CH2Cl2 was evaporated and the oil was placed on a silica gel GF prep plate and eluted with a solution of hexane-EtOAc (4: 1). M+H 400.2, M-H 398.1. Calc'd for C21Hl9ClFN302 : 399.1.
Example 5
EMI167.1
(6-Chloro-2-[[(4-methoxyphenyl)methyl]amino[3(3-pyridyl))-N (3-fluoro-4-methylphenyl) carboxamide hydrochloride (6-Chloro-2- [ [ (4-methoxyphenyl) methyl] amino [ (3- pyridyl))-N- (3-fluoro-4-methylphenyl) carboxamide (Example 4) was dissolved in MeOH (0.5 ml) and added to a solution of HCl-EtzO. The precipitate was collected and washed with
Et2O to give light yellow solid. MS (ES+) : 400.2 (M+H); (ES ): 398 (M-H). Calc'd for C21HlgClFN302-399. 851.
Example 6
EMI167.2
(6-Chloro-2- { ( (4-methoxyphenyl) methylamino} (3-pyridyl))-N (4-chlorophenyl) carboxamide
The title compound was analogously synthesized by method described in Example 4. MS (ES+) : 403 (M+H); (ES-) : 401 (M-H). Calc'd for C20H17Cl2N3O2 - 402.e 28.
Example 7
EMI168.1
2- (3-Fluoro-benzylamino)-N- (4-phenoxy-phenyl)-nicotinamide
Step A: Preparation of 2-chloro-N- (4-phenoxy-phenyl)nicotinamide
2-Chloropyridine-3-carbonyl chloride (9.15 g, 0.052 mol) was added to a stirred solution of 4-phenoxyaniline (10.00 g, 0.054 mol) and DIEA (10.00 ml, 0.057 mol) in
CH2C12 (100 ml) at RT. The mixture was stirred for 48 h before removal of solvent under reduced pressure. The resulting residue was dissolved in EtOAc and washed several times with saturated NaHC03 aqueous solution and brine, respectively. The organic layer was dried over Na2SO4 and evaporated to dryness. This material was re-crystallized from EtOAc/Hexane mixtures followed by filtration and rinsing with Et20 to leave the desired compound as a white solid.
MS m/z : 325 (M+1) ; 323 (M-1)
Step B : 2- (3-Fluoro-benzylamino)-N- (4-phenoxy-phenyl)- nicotinamide
2-Chloro-N- (4-phenoxy-phenyl)-nicotinamide (0.025 g, 0.077 mmol) (Step A) and 3-fluorobenzylamine (0.029 g, 2.31 mmol) were combined and heated at 120 C neat for 18 h.
After cooling to RT, the title compound was obtained through purification via preparative HPLC as the TFA salt. MS: (ES+) 414 (M+1)+; (ES-): 412 (M-1)-. Calc'd. for C25H2oFN302- 413.15.
The following compounds (Examples 8-37) were prepared by the method similar to that described in Example 7.
Example 8
EMI169.1
N- (4-Phenoxy-phenyl)-2- (3-trifluoromethyl-benzylamino)- nicotinamide
MS: (ES+) 464 (M+1) + ; (ES-): 462 (M. Calc'd. for CzsHzoFsN30z-463. 15.
Example 9
EMI170.1
2- (4-Fluorobenzylamino)-N- (4-phenoxy-phenyl)-nicotinamide
MS: (ES+) 414 (M + 1) + ; (ES-): 412 (M-1)-. Calc'd. for C25H20FN3O2 - 413. 15.
Example 10
EMI170.2
N- (4-Phenoxy-phenyl)-2- (4-trifluoromethyl-benzylamino)- nicotinamide
MS: (ES+) 464 (M+1) +; (ES-): 462 (M-1)-. Calc'd. for
C26H20F3N3O2 - 463.15.
Example 11
EMI171.1
2- (2-Bromo-benzylamino)-N- (4-phenoxy-phenyl)-nicotinamide
MS: (ES+) 475 (M+1) + ; (ES-): 473 (M-1)-. Calc'd. for
C25H20BrN3O2 - 473.07.
Example 12
EMI171.2
N- (4-Phenoxy-phenyl)-2- (4-trifluoromethoxy-benzylamino)- nicotinamide
MS: (ES+) 480 (M+1) + ; (ES-): 478 (M-1)-. Calc'd. for
C26H20F3N3O3
Example 13
EMI172.1
2- (2, 3-Difluorobenzylamino)-N- (4-phenoxyphenyl)-nicotinamide
MS: (ES+) 432 (M+1)+; (ES-): 430 (M-1)-. Calc'd. for
C25H19F2N3O2 - 431.14.
Example 14
EMI172.2
N-(4-Chlorophenyl)(2-{[(4-cyanophenyl)methyl]amino} (3 pyridyl)) carboxamide
MS (ES+): 363 (M+H); (ES-): 361 (M-H). Calc'd. for
C20H15ClN4O - 362.e81.
Example 15
EMI173.1
N-(4-Chlorophenyl)(2-{[(2-cyanophenyl)methyl]amino} (3 pyridyl)) carboxamide
MS (ES+): 363 (M+H); (ES-): 361 (M-H). Calc'd. for C2oHisClN40-362. 81.
Example 16
EMI173.2
N-(4-sec-butylpheneyl)-2-[(4-efluorobenzyl)amino]nicotinamide
MS: (ES+) 378.2 (M+H); (ES-) 376.2 (M-H). Calc'd for C23H24FN3O-377. 45.
Example 17
EMI174.1
N- (4-tert-Butylphenyl)-2- [ (4-fluorobenzyl) amino] nicotinamide
MS: (ES+) 378.2 (M+H); (ES-) 376. (M-H). Calc'd for C23H24FN30-377. 45.
Example 18
EMI174.2
N- (4-Isopropyl-phenyl)-2- (3-methoxy-benzylamino)- nicotinamide
MS (ES+): 376 (M+H)+; (ES-): 374 (M-H)'. Calc'd C23H25NO2 375.47.
Example 19
EMI175.1
(2-{[(3-Aminophenyl)methyl]amino}(3-pyridyl))-N-[4 (methylethyl) phenyl] carboxamide
MS (ES+): 361 (M+H) + ; (ES-): 359 (M-H)-. Calc'd C22H24N4O 360.46.
Example 20
EMI175.2
(2-{[ (4-Fluorophenyl) methyl] amino} (3-pyridyl))-N- [4- (methylethyl) phenyl] carboxamide
MS (ES+): 364 (M+H) + ; (ES-): 362. Calc'd C22H22FN3O-363. 43.
Example 21
EMI176.1
(2-{[(4-Fluorophenyl)methyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl) phenyl] carboxamide
MS: (ES+) 390 (M+H); (ES-) 388. (M-H). Calc'd for C20H15F4N3O - 389. 35.
Example 22
EMI176.2
(2-{[(3,4-Dimethoxyphenyl)methyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl)phenyl] carboxamide
MS: (ES+) 432 (M+H) ; (ES-) 430. (M-H). Calc'd for
C2oH2oF3N303 : 431. 41.
Example 23
EMI177.1
{2- [Benzylamino] (3-pyridyl)}-N- [3- (trifluoromethyl) phenyl]-carboxamide
MS: (ES+) 372 (M+H); (ES-) 370. (M-H). Calc'd for C2oHi6F3N3O : 371.36.
Example 24
EMI177.2
(2-{[(3-Chlorophenyl)methyl]amino}(3-pyridinyl))-N-[3 (trifluoromethyl) phenyl] carboxamide
MS: (ES+) 406 (M+H); (ES-) 404. (M-H). Calc'd for
C20H15ClF3N3O : 405.81.
Example 25
EMI178.1
(2-{[(4-Bromophenyl)methyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl) phenyllcarboxamide
MS: (ES+) 451 (M+H); (ES-) 449. (M-H). Calc'd for CzoHisBrF3Ns0 : 450. 26.
Example 26
EMI178.2
(2-{[(4-Chlorophenyl)methyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl)phenyl] carboxamide
MS: (ES+) 406 (M+H) ; (ES-) 404. (M-H). Calc'd for
C20H15ClF3N3O : 4 0 5. 81.
Example 27
EMI179.1
(2- { [ (2,4-Difluorophenyl) methyl]amino}(3-pyridyl))-N-[3 (trifluoromethyl) phenyl]carboxamide
MS: (ES+) 408 (M+H); (ES-) 406. (M-H). Calc'd for C2oHl7F5N30 : 407.34.
Example 28
EMI179.2
2-[1-(4-Fluoro-phenyl)-ethylamino]-N-(3-trifluoromethyl phenyl)-nicotinamide
MS: (ES+) 404 (M+H); (ES-) 402. (M-H). Calc'd for C21Hl7F4N3O : 403.37.
Example 29
EMI180.1
(2-{[ (3, 4-Difluorophenyl)methyl]amino](3-pyridyl))-N-[3 (trifluoromethyl) phenyl] carboxamide
MS: (ES+) 408 (M+H); (ES-) 406. (M-H). Calc'd for C2oH14FsN30 : 407. 34.
Example 30
EMI180.2
(2-{[(2, 3-Difluorophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide
MS: (ES+) 408 (M+H); (ES-) 406. (M-H). Calc'd for C20H14F5N3O : 407.34.
Example 31
EMI181.1
(2- { ( (2-Fluorophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl)phenyl]carboxamide
MS: (ES+) 390 (M+H); (ES-) 388. (M-H). Calc'd for
C20H15F4N3O : 389. 35.
Example 32
EMI181.2
(2-{[(2, 6-Difluorophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyllcarboxamide
MS: (ES+) 408 (M+H); (ES-) 406. (M-H). Calc'd for C20H14F5N3O: 407.34.
Example 33
EMI182.1
(2-{[ (3-Bromophenyl) methyl] amino} (3-pyridyl))-N- [3- (trifluoromethyl) phenyl] carboxamide
MS: (ES+) 451 (M+H); (ES-) 449. (M-H). Calc'd for
C20H15BrF3N3O : 450.26.
Example 34
EMI182.2
(2-{[(4-Fluorophenyl)methyl]eamino}(3-pyridyl))-N-[4 (trifluoromethyl)phenyl]carboxamide
MS: (ES+) 390 (M+H) ; (ES-) 388. (M-H). Calc'd for C2oH15F4N30 : 389.35.
Example 35
EMI183.1
N- 3- 3- (Dimethylamino) propyl]-5- (trifluoromethyl) phenyl} (2 {[(4-fluorophenyl)methyl]amino} (3-pyridyl)) carboxamide
Step A Preparation of {3- [3-amino-5- (trifluoromethyl) phenylApropynyl} dimethylamine
A mixture of 3-bromo-5-trifluoromethylaniline (1.4 g, 5.9 mmol), 1-dimethylamino-2-propyne (1.3 mL, 0.76 mmol),
PdCl2 (PPh3) 2 (0.26 g, 0.29 mmol) and CuI (114 mg, 0.60 mmol) in 10 mL of TEA was heated at 100 C in a sealed tube for 3 h. The resulting mixture was filtered over Celte@. The filtrate was concentrated, and the residue was purified by prep-HPLC (reverse phase) to give the aniline.
MS (ES+): 243 (M+H) + ; (ES-): 241 (M-H)-. Calc'd C12Hl3F3N2-242. 24.
Step B Preparation of {3- [3-amino-5- (trifleuoromethyl0phenyl]propyl}dimethylamine
A mixture of the above aniline (7 g, 29 mmol) and
Pd (OH) 2 (0.5 g) in 250 mL of MeOH was stirred under 50 psi H2. After 2 h, the resulting mixture was filtered over Celte@. The filtrate was concentrated, and the residue was diluted with aq. IN HC1. The aq. layer was washed with Et2O, made basic with aq. 5N NaOH, and extracted with CH2C12. The organic solution was dried over NaS04 and concentrated to give the titled compound. MS (ES+): 386 (M+H) + ; (ES-): 384 (M-H)-. Calc'd C18HlgClF3N3O-385. 81.
Step C Preparation of N- {3- [3- (dimethylamino) propyl]-5- (trifluoromethyl) phenyl} (2- { [ (4 fluorophenyl) methylAamino} (3-pyridyl)) carboxamide
The title compound was analogously synthesized by the method described in Example 7. MS (ES+): 475 (M+H)'' ; (ES-): 473 (M-H)-. Calc'd C25H26F4N40-474. 50.
Example 36
EMI184.1
{2-[({3-[3-(Dimethylamino)propyl]-4 fluorophenyl} methyl) amino] (3-pyridyl)}-N- [4- (tert- butyl)phenyl] carboxamide
Step A Preparation of N-Boc- (3-bromo-4-fluoro-benzyl) amine
To a solution of 3-bromo-4-fluorobenzylamine hydrochloride (10 g, 42 mmol) and TEA (10.5 g, 103 mmol) in 200 mL of CH2C12 was added BOC20 (9.1g, 42 mmol) at RT. The resulting solution was stirred for 16 h. The solution was diluted with aq. IN NaOH and CHzCl2. The organic layer was washed with brine, dried over Na2SO4, and concentrated to give N-Boc-(3-bromo-4-fluoro-benzyl) amine. MS (ES+): 305 (M+H) + ; (ES-): 303 (M-H). Calc'd C12H15BrFNO2 - 304. 16.
Step B Preparation of [3- (3-dimethylamino-propyl)-4-fluoro- benzyl]-Boc-amine [3- (3-Dimethylamino-propyl)-4-fluoro-benzyl]-Boc-amine was prepared from N-Boc- (3-bromo-4-fluoro-benzyl) amine according to a procedure similar to that described in
Example 35, Step A.
Step C Preparation of N-{3-[3-(dimethylameino)propyl]-4fluorophenyl} methylamine
To [3- (3-Dimethylamino-propyl)-4-fluoro-benzyl]-Boc- amine (3.0 g, 10 mmol) in 100 mL of CH2Cl2 was slowly added
TFA (10 mL). The resulting solution was stirred for 1 h, then concentrated. The residue was diluted with CH2Cl2 and aq. NaHC03 solution. The organic layer was dried over Na2SO4 and concentrated to give the title compound. MS (ES+): 211 (M+H) + ; (ES-): 209 (M-H). Calc'd C12HlgFN2-210. 29.
Step D Preparation of {2- [ ( {3- [3- (dimethylamino) propyl]-4- fluorophenyl} methyl) amino] (3-pyridyl)}-N- [4- (tert- butyl)phenyl]carboxamide
The title compound was analogously synthesized by the method described in Example 7. MS (ES+): 463 (M+H) + ; (ES-) : 461 (M-H). Calc'd C28H35FN40-462. 61.
The following compounds were analogously synthesized by the method described in Example 36.
Example 37
EMI186.1
{2-[({3-(Dimethylamino)propyl}-4 fluorophenyl} methyl) amino] (3-pyridyl)}-N- [4- (trifluoromethyl) phenyl] carboxamide
MS (ES+): 475 (M+H) + ; (ES-): 473 (M-H). Calc'd C25H26F4N40-474. 50.
Example 38
EMI186.2
{2-({3-[3-(Dimethylamino)propyl]-4 fluorophenyl} methyl) amino] (3-pyridyl)}-N- (4-bromo-2- fluorophenyl)carboxamide
MS (ES+): 504 (M+H) + ; (ES-): 502 (M-H). Calc'dC24H25BrF2N40- 503.39.
Example 39
EMI187.1
2-[(4-Fluorobenzyl)amino]-N-[4-tert-butyl-3-(1,2,3, 6 tetrahydropyridin-4-yl) phenyl] nicotinamide
Step A Preparation of 2-bromo-1-tert-butyl-4-nitrobenzene
NBS (125.0 g, 697.5 mmol, 1.5 eq) was slowly added to a solution of TFA: H2SO4 (5: 1,750 mL) and tert-butyl-4nitrobenzene (100.0 g, 558.0 mmol) at RT. The solution was stirred for 24 h then poured over 5 kg of ice. The resulting suspension was filtered, washed with a 1: 1
MeOH : H20 solution (200 mL) and dried in a vacuum oven.
MS (ES+): 258.1,260.1 (M+H) +
Step B Preparation of 4- (2-tert-butyl-5-nitrophenyl) pyridine
To a solution of 2-bromo-1-tert-butyl-4-nitrobenzene (8.6 g, 33.3 mmol) (Step A) and toluene (70 mL) in a 150 mL round bottom flask, 4-pyridylboronic acid (4.5 g, 36.6 mmol, 1.1 eq), Pd (PPh3) 4 (3.8 g, 3.3 mmol, 0.1 eq) and K2CO3 (13.8 g, 99.9 mmol, 3 eq) were added. The solution was stirred for 24 h at 80 C. The solution was filtered through a pad of
Celtes and purified by silica flash chromatography (30%
Hex/Hex) to afford the desired compound as a yellow solid.
MS (ES+) : 257.2 (M+H) + ; (ES-): 255.2 (M-H)-.
Step C Preparation of 4-(2-tert-butyl-5-nitrophenyl)-1- methylpyridinium 4- (2-tert-Butyl-5-nitrophenyl) pyridine (2.0 g, 7.8 mmol) (Step B) was added to a round-bottom flask and dissolved in EtOH (10 mL). CH3I (30 mL) was added to the flask and heated to reflux. After 6 h, the solution was cooled to RT and concentrated in vacuo resulting in the desired compound as a light brown solid. MS (ES+): 271.2 (M+H) + ; (ES-): 269. 2 (M-H)-. Calc'd for C16Hl9N202 : 271.14.
Step D: Preparation of 4-tert-butyl-3- (1-methyl-1, 2, 3, 6 tetrahydropyridin-4-yl) aniline 4- (2-tert-Butyl-5-nitrophenyl)-1-methylpyridinium (2.1 g, 7.8 mmol) (Step C) was added to a 100 mL round-bottom flask and dissolved in a 10% H20/EtOH mixture. Iron dust (1.31 g, 23.4 mmol, 3 eq) and NH4Cl (460 mg, 8.6 mmol, 1.1 eq) were added. The flask was heated to reflux. After 2 h, the solution was cooled to RT and filtered through a pad of Celte@. The resulting solution was stripped down to a yellow solid and redissolved in MeOH (20 mL, anhydrous).
The solution was cooled to 0 C and slowly adding NaBH4 (450 mg, 11.7 mmol, 1.5 eq). The solution was cooled to RT and stirred for 30 min. The solvent was stripped-off under vacuum and the solid was redissolved in CH2C12 and filtered.
The solution was concentrated in vacuo to afford an amorphous clear yellow solid. MS (ES+): 245.2 (M+H) +
Step E: Preparation of 2- [ (4-fluorobenzyl) amino]-N- [4-tert butyl-3- (1, 2,3,6-tetrahydropyridin-4-yl) phenylznicotinamide
The title compound was analogously synthesized by the method described in Example 7. MS: (ES+) 473.2 (M+H); (ES-) 471.4 (M-H). Calc'd for C29H33FN40 : 472.60.
Example 40
EMI189.1
[2-({[4-Fluoro-3-(3-morpholin-4-ylprop-1 ynyl) phenyl] methyl} amino) (3-pyridyl)]-N- 3- (trifluoromethyl) phenyl] carboxamide
Step A: Preparation of (tert-butoxy)-N- [ (3-bromo-4- fluorophenyl) methyls carboxamide
To a solution of 3-bromo-4-fluorobenzylamine (10 g, 41 mmol) and TEA (14 mL, 104 mmol) in CH2Cl2 was added BOC2O (9.1 g, 41 mmol). The resulting solution was stirred for 16 h at RT, then diluted with aq. IN NaOH and CH2C12. The organic layer was separated, washed with brine, dried over
Na2SO4, and concentrated to give (tert-butoxy)-N- [ (3-bromo- 4-fluorophenyl) methyl] carboxamide.
Step B : Preparation of (tert-Butoxy)-N-{[4-fluoro-3-(3- hydroxyprop-1-ynyl) phenyl] methyl}carboxamide
A mixture of tert-butoxy-N- [ (3-bromo-4- fluorophenyl) methyls carboxamide (0.6 g, 2.0 mmol, Step A), Cul. (38 mg, 0.2 mmol), PdCl2 (PPh3) 2 (72 mg, 0.1 mmol), propargyl alcohol (0.35 mL, 6.0 mmol) and TEA (12 mL) was heated at 100 C for 5 h. The resulting mixture was filtered, and the filtrate was concentrated. The residue was purified by Si02 chromatography to give the title compound.
MS (ES+): 297 (M+NH4)+. Calc'd C15H22FN2O3 -297.34.
Step C: Preparation of [4-Fluoro-3- (3-morpholin-4-ylprop-l- ynyl)phenyl]-methylamine
To a mixture of (tert-butoxy)-N-{[(4-fluoro-3-(3hydroxyprop-1-ynyl) phenyl] methyl} carboxamide (0.23g, 0.82 mmol) (Step B) and NMO (0.14 g, 1.3 mmol) was added catalytic amount of TPAP. The resulting mixture was stirred for 1 h at RT, then filtered over a short pad of Si02 and concentrated. To a solution of the residue and morpholine (0.1 mL, 1.2 mmol) in CH2Cl2 was added excess NaBH (OAc) 3. The resulting solution was stirred for 16 h, diluted with CHzCl2 and saturated aq. NaHC03 solution. The organic layer was separated, dried over Na2SO4, and concentrated.
The residue was purified by Si02 chromatography to give a colorless oil, which was dissolved in 5 mL of CH2Cl2. To the organic solution was added TFA (2 mL). The resulting solution was stirred for 1 h at RT, then concentrated. The residue was diluted with CH2Cl2 and saturated aq. NaHC03 solution. The organic layer was separated, dried over Na2SO4, and concentrated to give the title compound. MS (ES+): 249 (M+H) + ; (ES-): 247. Calc'd C14Hl7FN2O-248. 30.
Step D: Preparation of [2-({[4-fluoro-3-(3-morpholin-4ylprop-1-ynyl) phenyl]methyl}amino)(3-pyridyl)]-N-[3 (trifluoromethyl) phenyl] carboxamide
The title compound was analogously synthesized by the method described in Example 7. MS (ES+): 513 (M+H) + ; (ES-) : 511. Calc'd C27H24F4N402-512. 51.
Example 41
EMI191.1
{2-[(2H-BenzoEd] 1, 3-diosol-5-ylmethyl) amino] (3-pyridyl)}-N- (4-phenoxyphenyl) carboxamide: 2-Chloro- (3-pyridyl)-N- (4-phenoxyphenyl)-carboxamide (0.500 g, 1.5 mmol) and 2H-benzo [d] 1, 3-dioxolan-5ylmethylamine (0.680 g, 4.5 mmol) were combined and heated neat at 110 C for 18 h. After cooling to RT, the resulting residue was dissolved in EtOAc and washed with saturated naACO3 solution and brine, respectively. The organics were dried over Na2SO4 and evaporated. The crude material was purified by column chromatography with EtOAc/hexanes (1: 2) as eluant to leave the desired compound as an off-white solid. MS: (ES+) 440 (M + 1) + ; (ES-): 438 (M-1)-.
Calc'd. for C26H2zN304-439. 15.
Example 42
EMI191.2
2- (4-Fluoro-benzylamino)-N- [3- (2-pyrrolidin-1-yl-ethoxy)-4- trifluoromethyl-phenyl]-nicotinamide 2-Chloro-N- [3- (2-pyrrolidin-1-yl-ethoxy)-4- trifluoromethyl-phenyl]-nicotinamide (199.1 mg), DIEA (252 uL) and 4-fluorobenzylamine (193 uL) were combined in a sealed tube and heated to 130 C for 2 h. The mixture was purified on silica gel chromatography (2-3.5% MeOH/CH2Cl2).
The desired fractions were concentrated in vacuo, and the residue was dissolved in Et2O and hexanes were added until the solution became cloudy. The solids were filtered, and dried. Additional material was obtained from the filtrate upon additional rounds of concentration, dissolving in Et2O and treatment with hexanes. M+H 503.4, Calc'd 502.2.
Example 43
EMI192.1
(R) 2- (4-Fluoro-benzylamino)-N- 3- (1-Boc-pyrrolidin-2- ylmethoxy)-4-pentafluoroethyl-phenyl]-nicotinamide
2-Chloro-N- [3- (1-Boc-pyrrolidin-2-ylmethoxy)-4- pentafluoroethyl-phenyl]-nicotinamide (442.8 mg) DIEA (351 uL) and 4-fluorobenzylamine (322 uL) were combined in a sealed tube and heated to 130 C for 3 h. The mixture was diluted with EtOAc and H2O, the layers were separated and the organic layer was washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified with silica gel chromatography (1% MeOH/CH2Cl2) to obtain an off-white solid.
Example 44
EMI193.1
N-r4-tert-Butyl-3-(1-Boc-piperidin-4-ylmethoxy)-phenyl]-2 (4-fluoro-benzylamino)-nicotinamide
N- [4-tert-Butyl-3- (l-Boc-piperidin-4-ylmethoxy)- phenyl]-2-chloro-nicotinamide (200 mg), DIEA (145 uL), IpOH (3 ml) and 4-fluorobenzylamine (184 uL) were combined in a sealed tube and heated to 125C for 2 days. The mixture was purified by flash chromatography (EtOAc) to provide the product. M+Na 619; Calc'd for C34H43FN404 : 590.33.
Example 45
EMI193.2
N- [3, 3-Dimethyl-1- (1-methyl-piperidin-4-yl)-2, 3-dihydro-lH indol-6-yl]-2- (4-fluoro-benzylamino)- nicotinamide
A solution of N- [3, 3-dimethyl-1- (1-methyl-piperidin-4- yl)-2,3-dihydro-lH-indol-6-yl]-2-fluoro-nicotinamide (500 mg), 4-fluorobenzylamine (240 uL) and NaHC03 (359 mg) was dissolved in IpOH (5 ml) and heated to 85C overnight. After cooling to RT, the mixture was dried under N2. The residue was partitioned between EtOAc and H2O, the organic layer was separated, washed with brine, dried over Na2SO4 and filtered.
Silica was added to the filtrate and concentrated to a residue. It was purified by flash chromatography (10% MeOH/EtOAc) to yield a fluffy yellow solid. M+H 488.4.
Calc'd for C29H34FM5O : 487.3.
The following compounds (Examples 46-53) were analogously formed from the corresponding fluoro compounds by the method described in Example 45.
46) N- [1- (2-Dimethylamino-acetyl)-3, 3-dimethyl-2,3-dihydro 1H-indol-6-yl]-2- (4-fluoro-benzylamino)-nicotinamide. M+H 476.3; Calc'd 475.24.
47) N-[1-(1-Boc-piperidin-4-yl)-3, 3-dimethyl-2,3-dihydro-lH indol-6-yl]-2- (4-fluoro-benzylamino)-nicotinamide. M+H 574.5 ; Calc'd 573.31.
48) N- [3, 3-Dimethyl-l- (2-Boc-amino-acetyl)-2, 3-dihydro-IH- indol-6-yl]-2- (4-fluoro-benzylamino)-nicotinamide. M+H 548.4.
49) 2- (4-Fluoro-benzylamino)-N- (2-Boc-4, 4-dimethyl-1, 2,3,4tetrahydro-isoquinolin-7-yl)-nicotinamide. M+H 505.4.
50) N- [3- (1-Boc-pyrrolidin-2-ylmethoxy)-5-trifluoromethyl- phenyl]-2- (4-fluoro-benzylamino)-nicotinamide was prepared as above but at 90C overnight and with a second addition of amine prior to heating for another 24 h. M+Na 611. Calc'd 588.2.
51) N- [4-tert-Butyl-3- (l-Boc-pyrrolidin-2-ylmethoxy)- phenyl]-2- (4-fluoro-benzylamino)-nicotinamide. M+Na 599.
Calc'd 576.31.
52) N- (4-Acetyl-2, 2-dimethyl-3,4-dihydro-2Hbenzo [1,4] oxazin-6-yl)-2- (4-fluoro-benzylamino)-nicotinamide was prepared as described above but substituting t-BuOH for IpOH and heating overnight at 80C. M+H 449.1; Calc'd 448.19.
53) 2- (4-Fluoro-benzylamino)-N- [3- (l-Boc-piperidin-4- ylmethoxy)-5-trifluoromethyl-phenyl]-nicotinamide. M+H 603.4.
Example 54
EMI195.1
(R)2- (4-Fluoro-benzylamino)-N- [3- (pyrrolidin-2-ylmethoxy)
4-pentafluoroethyl-phenyl]-nicotinamide
2- (4-Fluoro-benzylamino)-N- [3- (1-Boc-pyrrolidin-2- ylmethoxy)-4-pentafluoroethyl-phenyl]-nicotinamide (Example 43) was dissolved in CH2Cl2 (8 ml) and TFA (8 ml) was added.
After stirring at RT for 70 min, the mixture was concentrated in vacuo, diluted with 2N NaOH and CH2C12. The layers were separated and the aqueous layer was back extracted with CH2Cl2. The organic layer was washed with brine, dried over Na2SO4, filtered and concentrated in vacuo to provide an light pink-orange solid. M+H 539.5. Calc'd f or C26H24F6N402 : 538. 2.
The following compounds (Examples 55-59) were analogously formed from the corresponding Boc-protected compounds by the method described in Example 54.
55) (R) 2- (4-Fluoro-benzylamino)-N- [3- (pyrrolidin-2 ylmethoxy)-5-trifluoromethyl-phenyl]-nicotinamide. M+H 489 ;
Calc'd 488.2.
56) N- [4-tert-Butyl-3- (piperidin-4-ylmethoxy)-phenyl]-2- (4fluoro-benzylamino)-nicotinamide. M+H 491 ; Calc'd 490.3.
57) (R) N- [4-tert-Butyl-3- (pyrrolidin-2-ylmethoxy)-phenyl]- 2- (4-fluoro-benzylamino)-nicotinamide. M+H 477; Calc'd 476.3.
58) N- (4,4-Dimethyl-1,2,3,4-tetrahydro-isoquinolin-7-yl)-2 (4-fluoro-benzylamino)-nicotinamide. M+H 405.1 ; Calc'd 404.2.
59) N- [1- (2-Amino-acetyl)-3, 3-dimethyl-2,3-dihydro-lH-indol 6-yl]-2- (4-fluoro-benzylamino)-nicotinamide.
Example 60
EMI197.1
N- (3, 3-Dimethyl-l-piperidin-4-yl-2, 3-dihydro-lH-indol-6-yl) 2- (4-fluoro-benzylamino)-nicotinamide N- [1- (l-Boc-piperidin-4-yl)-3, 3-dimethyl-2,3-dihydro 1H-indol-6-yl]-2- (4-fluoro-benzylamino)-nicotinamide (Example 47) was dissolved in a mixture of conc. HC1 and
EtOAc and stirred at RT for 1.5 h. The mixture was concentrated in vacuo and the residue was partitioned between EtOAc and 1N NaOH. The organic layer was removed, washed with brine, dried over Ma2SO4, filtered and concentrated in vacuo to provide a yellow solid. M+H 474.3.
Calc'd for C28H32FN5O : 473.3.
Example 61
EMI197.2
2- (4-Fluoro-benzylamino)-N- [3- (piperidin-4-ylmethoxy)-5- trifluoromethyl-phenyl]-nicotinamide 2- (4-Fluoro-benzylamino)-N- [3- (piperidin-4-ylmethoxy)- 5-trifluoromethyl-phenyl]-nicotinamide was prepared by a method similar to that described for Example 60. M+H 503.3.
Calc'd for C26H26F4N402 : 502.2.
Example 62
EMI198.1
N- (2, 2-Dimethyl-3,4-dihydro-2H-benzo [l, 4] oxazin-6-yl)-2- (4- fluoro-benzylamino)-nicotinamide
N- (4-Acetyl-2, 2-dimethyl-3,4-dihydro-2Hbenzo [1,4] oxazin-6-yl)-2- (4-fluoro-benzylamino)-nicotinamide (250 mg, Example 52) was dissolved in EtOH (10 ml) and treated with conc. HCL (0.5 ml) at 60 C for 16 h. The mixture was cooled to 0 C and sat. NaHC03 (aq) was added.
The mixture was extracted with EtOAc (3x50 ml) and the combined organic fractions were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by silica gel chromatography (50%
EtOAc/hexanes). M+H 407. 3; Calc'd for C23H23FN402 : 406.18.
Example 63
EMI199.1
(S)-2- (4-Fluoro-benzylamino)-N- [3- (l-methyl-pyrrolidin-2 ylmethoxy)-5-trifluoromethyl-phenyl]-nicotinamide
2-Fluoro-N- [3- (1-methyl-pyrrolidin-2-ylmethoxy)-5- trifluoromethyl-phenyl]-nicotinamide (300 mg), TEA (314 uL) and 4-fluorobenzylamine (170 uL) were combined in a sealed tube and heated to 90 C for 3 h. Cooled to RT and the mixture was diluted with EtOAc, washed with sat. NH4Cl (2x), brine, dried over Na2SO4, filtered and concentrated in vacuo.
The residue was purified by silica gel chromatography (CH2Cl2/MeOH/NH4OH 95/5/0. 5) to provide an off-white foam upon drying. M+H 503. Calc'd for C26H26F4N402 : 502.20.
Example 64
EMI199.2
N-[3,3-Dmethyle-1-(1-methyl-piperidin-4-ylmethyl)-2, 3 dihydro-lH-indol-6-yl]-2- (4-fluoro-benzylamino)-nicotinamide
To N- (3, 3-dimethyl-l-piperidin-4-ylmethyl-2, 3-dihydro lH-indol-6-yl)-2- (4-fluoro-benzylamino)-nicotinamide (0.92 g) dissolved in DCE (20 ml) at RT was added formaldehyde (37% aqueous, 0.42 mL) followed by NaBH (OAc) 3 (1. 59 g).
After 4 h, the mixture was quenched with IN HCl (20 mL) and
H2O (20 mL). It was basified with sat NAHCO3, extracted with CH2C12 (3x50 mL) and the combined extracts were washed with brine, dried (K2CO3) and concentrated onto Si02 (previously treated with 10% MeOH (2M NH3 in MeOH/CH2C12 and then concentrated in vacuo). The residue was purified by flash chromatography (Isco, 35g column, 1-7% MeOH (2M NH3 in MeOH/CH2Cl2). The bulk of the crude yellow material was further purified by reverse phase Prep HPLC. The isolated fractions were partially concentrated and basified with IN NaOH and dried under vacuum to afford a slightly yellow powder. M+H=502.3.
Calc'd for C3oH36FNsO : 501.29.
Example 65
EMI200.1
2-(4-Fluoro-benzylamino)-N-{4-E1-methyl-1-(1-methyl piperidin-4-yl)-ethyl]-phenyl}-nicotinamide
A solution of 2-fluoro-N-{4-[1-methyl-1-(1-methyl piperidin-4-yl)-ethyl]-phenyl}-nicotinamide (355 mg) and 4fluorobenzylamine (250 mg) in pyridine (10 mL) was suspended with NaHCO3 (1 g). The mixture was heated to 105 C overnight. Solids were removed by filtration and the filtrate was concentrated in vacuo. The residue was purified on prep. TLC plates (silica, EtOAc: TEA=10 : 1) to provide the desired product. MS (ES+): 461 (M+1) +, Calc'd for C28H33FN4O-460. 59.
Example 66
EMI201.1
N- (4, 4-Dimethyl-2-oxo-1, 2,3,4-tetrahydro-guinolin-7 yl)-2- (4-fluoro-benzylamino)-nicotinamide
M+H 419.1. Calc'd for C24H23FN402 : 418.2.8
Example 67
EMI201.2
3-Benzo[1,3]dioxol-5-yl-3-[3-(4-pentafluoroethyl phenylcarbamoyl)-pyridin-2-ylamino]-propionic acid
The Compound was synthesized by a procedure similar to the method described in Example 45. M+H 524.1. Calc'd for
C25H20F5N3O5 : 537.13.
Other compounds included in this invention are set forth in Tables 1-3 below.
Table 1.
EMI202.1
# R1 R2 R8 68.4-chlorophenyl H 4-amino69.3-isoquinolinyl H 70.2-quinolinyl H 71.2-benzthiazolyl H 72.2-benzimidazolyl H 4-amino73.4-benzimidazolyl H 74.5-benzimidazolyl H 75.6-benzimidazolyl H 76.7-benzimidazolyl H 77.2-chlorophenyl 5-Br 78.3-isoquinolinyl 5-Br 79.2-quinolinyl 5-Br 80.2-benzthiazolyl 5-Br 81.2-benzimidazolyl 5-Br 82.4-benzimidazolyl 5-Br 83. 5-benzimidazolyl 5-Br 84.6-benzimidazolyl 5-Br 4-amino85.7-benzimidazolyl 5-Br 4-amino86.4-chlorophenyl 5-Br 3-amino 87.4-chlorophenyl 5-Br 4-hydroxy 88.4-chlorophenyl 6-CH3 4-amino
Table 1.
(cont.)
EMI203.1
# R Rl R8 89.4-phenoxyphenyl H 4-amino 90.3-phenoxyphenyl H 4-methoxy 91. 4-biphenyl H 4-methoxy 92.4-cyclohexylphenyl H 4-methoxy 93.2-quinolyl H 4-methoxy 94.3-isoquinolyl H 4-methoxy 95.3-quinolyl H 4-methoxy 96.1-isoquinolyl H 4-methoxy 97.5-quinolyl H 4-methoxy 98.5-isoquinolyl H 4-methoxy 99.6-quinolyl H 4-methoxy 100.6-isoquinolyl H 4-methoxy 101. 7-quinolyl H 4-methoxy 102.7-isoquinolyl H 4-hydroxy 103.4-quinolyl H 4-hydroxy 104.4-isoquinolyl H 4-hydroxy 105.4-pyridyl H 4-hydroxy 106.4-pyrimidinyl H 4-hydroxy 107.2-pyrimidinyl H 4-hydroxy 108.6-pyrimidinyl H 4-hydroxy 109.4-pyridazinyl H 4-hydroxy 110. 5-pyridazinyl H 4-hydroxy 111. 4-indolyl H 4-hydroxy 112. 5-isoindolyl H 3-amino 113.5-naphthyridinyl H 3-amino
114.6-quinozalinyl H 3-amino
Table 1. (cont.)
EMI204.1
# R R1 R8 115.6-isoquinolyl H 3-amino 116. 4-naphthyridinyl H 3-amino 117.5-quinozalinyl H 3-amino 118. 4-naphthyridinyl H 3-amino 119. 3,
4-dichlorophenyl H 2-cyano 120.6-isoquinolyl H 2-cyano 121.4-chlorophenyl H 3-cyano 122.4-chlorophenyl H 4-cyano 123.6-indazolyl H 3-hydroxymethyl 124.6-isoindolyl H 3-hydroxymethyl 125.5-indazolyl H 3-hydroxymethyl 126.5-isoindolyl H 3-hydroxymethyl 127.6-benzothienyl H 3-hydroxymethyl 128.6-benzofuryl H 3-hydroxymethyl 129.5-benzothienyl H 3-hydroxymethyl 130.5-benzofuryl H 3-hydroxymethyl 131.2-benzimidazolyl H 3-hydroxymethyl 132.2-benzoxazolyl H 3-hydroxymethyl 133.6-benzimidazolyl H 3-hydroxymethyl 134.6-benzoxazolyl H 3-hydroxymethyl 135.6-benzthiazolyl H 4-amino 136.2-quinazolinyl H 4-hydroxymethyl 137.3- (phenoxy)-6-pyridyl H 3-aminocarbonyl 138.4- (phenylcarbonyl) phenyl H 3-aminocarbonyl
Table 1. (cont.)
EMI205.1
#
R2 R1 R8 139.4- (phenylamino) phenyl H 3-aminocarbonyl 140.4-cyclohexyloxyphenyl H 3-aminocarbonyl 141.4- (3-thienyl) phenyl H 4-amino 142.4- (pyrazol-3-yl) phenyl H 4-amino 143.4-pyridyl 6-Cl 4-amino, 3-F 144.3-methoxyphenyl 6-Cl 4-amino, 3-F 145.4-hydroxyphenyl 6-Cl 4-amino, 3-F 146.3-hydroxyphenyl H 4-methoxy, 3-F 147.2-hydroxyphenyl H 3-methoxy, 3-F 148.4-chlorophenyl 6-phenyl 4-amino 149.4-phenoxyphenyl 6-phenyl 4-amino 150. 4-biphenyl 6-phenyl 4-amino 151.4-hydroxyphenyl 6-phenyl 4-amino 152.4-cyclohexylphenyl 6-phenyl 4-amino 153.3-isoquinolyl 6-phenyl 4-amino
Table 2.
EMI206.1
# R R2 R 154.4-amino-4-chlorophenyl H 155.4-amino-3-isoquinolinyl H 156.4-amino-2-quinolinyl H 157.4-amino-2-benzthiazolyl H 158.4-amino-2-benzimidazolyl H 159.4-amino-4-benzimidazolyl H 160. 4-amino-5-benzimidazolyl H 161.4-amino-6-benzimidazolyl H 162. 4-amino-7-benzimidazolyl H 163.4-amino-2-chlorophenyl 5-Br 164.4-amino-3-isoquinolinyl 5-Br 165.4-amino-2-quinolinyl 5-Br 166.4-amino-2-benzthiazolyl 5-Br 167.4-amino-2-benzimidazolyl 5-Br 168.4-amino-4-benzimidazolyl 5-Br 169.4-amino-5-benzimidazolyl 5-Br 170.4-amino-6-benzimidazolyl 5-Br 171.4-amino-7-benzimidazolyl 5-Br 172.3-amino-4-chlorophenyl 5-Br 173.4-hydroxy-4-chlorophenyl 5-Br 174.4-amino-4-chlorophenyl 6-CH3
Table 2. (cont.)
EMI207.1
#
R2 R1 R8 175.4-phenoxyphenyl H 4-amino 176.3-phenoxyphenyl H 4-methoxy 177. biphenyl H 4-methoxy 178.4-cyclohexylphenyl H 4-methoxy 179.2-quinolyl H 4-methoxy 180. 3-isoquinolyl H 4-methoxy 181.3-quinolyl H 4-methoxy 182.1-isoquinolyl H 4-methoxy 183.5-quinolyl H 4-methoxy 184.5-isoquinolyl H 4-methoxy 185.6-quinolyl H 4-methoxy 186.6-isoquinolyl H 4-methoxy 187.7-quinolyl H 4-methoxy 188.7-isoquinolyl H 4-hydroxy 189.4-quinolyl H 4-hydroxy 190.4-isoquinolyl H 4-hydroxy 191.4-pyridyl H 4-hydroxy 192.4-pyrimidinyl H 4-hydroxy 193.2-pyrimidinyl H 4-hydroxy 194.6-pyrimidinyl H 4-hydroxy 195.4-pyridazinyl H 4-hydroxy 196.5-pyridazinyl H 4-hydroxy 197. 4-indolyl H 4-hydroxy 198.5-isoindolyl H 3-amino 199.5-naphthyridinyl H 3-amino 200.6-quinozalinyl H 3-amino
Table 2.
(cont.)
EMI208.1
# R2 R1 R8 201.6-isoquinolyl H 3-amino 202. 4-naphthyridinyl H 3-amino 203.5-quinozalinyl H 3-amino 204.4-naphthyridinyl H 3-amino 205.6-indazolyl H 3-hydroxymethyl 206.6-isoindolyl H 3-hydroxymethyl 207.5-indazolyl H 3-hydroxymethyl 208.5-isoindolyl H 3-hydroxymethyl 209.6-benzothienyl H 3-hydroxymethyl 210.6-benzofuryl H 3-hydroxymethyl 211.5-benzothienyl H 3-hydroxymethyl 212.5-benzofuryl H 3-hydroxymethyl 213.2-benzimidazolyl H 3-hydroxymethyl 214.2-benzoxazolyl H 3-hydroxymethyl 215.2-benzthiazolyl H 3-hydroxymethyl 216.6-benzimidazolyl H 3-hydroxymethyl 217.6-benzoxazolyl H 3-hydroxymethyl 218.6-benzthiazolyl H 4-amino 219.2-quinazolinyl H 4-hydroxymethyl
Table 3.
EMI209.1
# R8 Y 220.4-F-NHS02-4-chlorophenyl H 221.4-F-NHS02-4-chlorophenyl 5-Br 222.3,4-diF-NHS02-3-chlorophenyl H 223. 4-Cl -NHSO2- 3-chlorphenyl 5-Br 224. H-NHS02-4-phenoxyphenyl H 225. 4-F-NHSO2-4-biphenyl H 226.4-F-NHS02-3-isoquinolyl H 227.3,4-diF-NHS02-3-isoquinolyl 5-Br 228. H-NHS02-4-chlorophenyl H 229.4-F-NHS02-4-chlorophenyl 5-Br 230.4-F-NHS02-3-chlorophenyl H 231.3, 4-diF -NHSO2- 3-chlorophenyl 5-Br 232.
H -NHSO2- 4-phenoxyphenyl H 233. 4-F -NHSO2- 4-biphenyl H 234.4-F-NHS02-3-isoquinolyl H 235.3,4-diF-NHS02-3-isoquinolyl 5-Br
EMI209.2
Table 3. cont.
EMI210.1
EMI210.2
<tb> # <SEP> R8 <SEP> Y <SEP> R2 <SEP> R1
<tb> <SEP> w
<tb> 238.4-F-NHCH2-HN-N <SEP> H
<tb> <SEP> H <SEP> C <SEP> H3
<tb> <SEP> N
<tb> 239.4-F-NHCH2-HN <SEP> H
<tb> 240.4-F-NHCH2-3-CF,-phenyl <SEP> F
<tb> hL
<tb> 241. <SEP> 4-F'-NHCH-H
<tb> <SEP> H3C <SEP> CH
<tb> <SEP> , <SEP> <
<tb> <SEP> N
<tb> 242.4-F-NHCH2-H <SEP> H
<tb> <SEP> I <SEP> k, <SEP> (D
<tb> <SEP> N <SEP> N
<tb> 243.3,4-diF-NHCH2-H <SEP> H
<tb> <SEP> Jf <SEP>
<tb> 244.H-NHCH2-H
<tb> <SEP> r
<tb> <SEP> L
<tb> 245.4-F-NHCH2-O <SEP> H
<tb>
Table 3. cont.
EMI211.1
EMI211.2
Table 3. cont.
EMI212.1
EMI212.2
Table 3. cont.
EMI213.1
EMI213.2
Table 3. cont.
EMI214.1
EMI214.2
Although the pharmacological properties of the compounds of Formulas I-III vary with structural change, in general, activity possessed by compounds of Formulas I-III may be demonstrated in vivo. The pharmacological properties of the compounds of this invention may be confirmed by a number of pharmacological in vitro assays. The exemplified pharmacological assays which follow have been carried out with the compounds according to the invention and their salts. Compounds of the present invention showed inhibition of KDR kinase at doses less than 50 ssm.
BIOLOGICAL EVALUATION HUVEC Proliferation Assay
Human Umbilical Vein Endothelial cells are purchased from Clonetics, Inc., as cryopreserved cells harvested from a pool of donors. These cells, at passage 1, are thawed and expanded in EBM-2 complete medium, until passage 2 or 3.
The cells are trypsinized, washed in DMEM + 10% FBS + antibiotics, and spun at 1000 rpm for 10 min. Prior to centrifugation of the cells, a small amount is collected for a cell count. After centrifugation, the medium is discarded, and the cells are resuspended in the appropriate volume of DMEM + 10% FBS + antibiotics to achieve a concentration of 3x105 cells/mL. Another cell count is performed to confirm the cell concentration. The cells are diluted to 3x104 cells/mL in DMEM + 10% FBS + antibiotics, and 100 gel of cells are added to a 96-well plate. The cells are incubated at 37 C for 22 h.
Prior to the completion of the incubation period, compound dilutions are prepared. Five-point, five-fold serial dilutions are prepared in DMSO, at concentrations 400-fold greater than the final concentrations desired. 2.5 , uL of each compound dilution are diluted further in a total of 1 mL DMEM + 10% FBS + antibiotics (400x dilution).
Medium containing 0.25% DMSO is also prepared for the 0 AM compound sample. At the 22-hour timepoint, the medium is removed from the cells, and 100 AL of each compound dilution is added. The cells are incubated at 37 C for 2-3 h.
During the compound pre-incubation period, the growth factors are diluted to the appropriate concentrations.
Solutions of DMEM + 10% FBS + antibiotics, containing either
VEGF or bFGF at the following concentrations: 50,10,2, 0.4,0.08, and 0 ng/mL are prepared. For the compoundtreated cells, solutions of VEGF at 550 ng/mL or bFGF at 220 ng/mL for 50 ng/mL or 20 ng/mL final concentrations, respectively, are prepared since 10 ssL of each will be added to the cells (110 gL final volume). At the appropriate time after adding the compounds, the growth factors are added.
VEGF is added to one set of plates, while bFGF is added to another set of plates. For the growth factor control curves, the media on wells B4-G6 of plates 1 and 2 are replaced with media containing VEGF or bFGF at the varying concentrations (50-0 ng/mL). The cells are incubated at 37 C for an additional 72 h.
At the completion of the 72 h incubation period, the medium is removed, and the cells are washed twice with PBS.
After the second wash with PBS, the plates are tapped gently to remove excess PBS, and the cells are placed at-70 C for at least 30 min. The cells are thawed and analyzed using the CyQuant fluorescent dye (Molecular Probes C-7026), following the manufacturer's recommendations. The plates are read on a Victor/Wallac 1420 workstation at 485 nm/530 nm (excitation/emission). Raw data are collected and analyzed using a 4-parameter fit equation in XLFit. ICso values are then determined.
The compounds of examples 16-17 20-21,25-27,29,3435,39-42,45-46,52,54-57,58-65,212,215 and 243-245 inhibited VEGF-stimulated HUVEC proliferation at a level below 50 nM.
Angiogenesis Model
To determine the effects of the present compounds on angiogenesis in vivo, selective compounds are tested in the rat corneal neovascularization micropocket model or the angiogenesis assay of Passaniti, Lab. Invest., 67,519-28 (1992).
Rat Corneal Neovascularization Micropocket Model
In Life Aspects: Female Sprague Dawley rats weighing approximately 250 g were randomized into one of five treatment groups. Pretreatment with the vehicle or compound was administered orally, 24 h prior to surgery and continued once a day for seven additional days. On the day of surgery, the rats were temporarily anesthetized in an
Isofluorane gas chamber (delivering 2.5 liters/min oxygen + 5% Isofluorane). An othoscope was then placed inside the mouth of the animal to visualize the vocal cords. A tipblunted wire was advanced in between the vocal cords and used as a guide for the placement of an endotracheal Teflon tube (Small Parts Inc. TFE-standard Wall R-SWTT-18). A volume-controlled ventilator (Harvard Apparatus, Inc.
Model 683) was connected to the endotracheal tube to deliver a mixture of oxygen and 3% Isofluorane. Upon achieving deep anesthesia, the whiskers were cut short and the eye areas and eyes gently washed with Betadine soap and rinsed with sterile saline. The corneas were irrigated with one to two drops of Proparacaine HC1 ophthalmic topical anesthetic solution (0.5%) (Bausch and Lomb Pharmaceuticals, Tampa FL).
The rat was then positioned under the dissecting microscope and the corneal surface brought into focus. A vertical incision was made on the midline of the cornea using a diamond blade knife. A pocket was created by using fine scissors to separate the connective tissue layers of the stroma, tunneling towards the limbus of the eye. The distance between the apex of the pocket and the limbus was approximately 1.5 mm. After the pocket had been made, the soaked nitrocellulose disk filter (Gelman Sciences, Ann
Arbor MI.) was inserted under the lip of the pocket. This surgical procedure was performed on both eyes. rHu-bFGF soaked disks were placed into the right eye, and the rHu
VEGF soaked disks were placed into the left eye. Vehicle soaked disks were placed in both eyes. The disk was pushed into position at the desired distance from the limbal vessels.
Ophthalmic antibiotic ointment was applied to the eye to prevent drying and infection. After seven days, the rats were euthanized by C02 asphyxiation, and the eyes enucleated. The retinal hemisphere of the eye was windowed to facilitate fixation, and the eye placed into formalin overnight.
Post Mortem Aspects: After twenty-four hours in fixative, the corneal region of interest was dissected out from the eye, using fine forceps and a razorblade. The retinal hemisphere was trimmed off and the lens extracted and discarded. The corneal dome was bisected and the superfluous cornea trimmed off. The iris, conjunctiva and associated limbal glands were then carefully teased away.
Final cuts were made to generate a square 3x3mm containing the disk, the limbus, and the entire zone of neovascularization.
Gross Image Recording : The corneal specimens were digitally photographed using a Sony CatsEye DKC5000 camera (A. G. Heinz, Irvine CA) mounted on a Nikon SMZ-U stereo microscope (A. G. Heinz). The corneas were submerged in distilled water and photographed via trans-illumination at approximately 5.0 diameters magnification.
Image analysis : Numerical endpoints were generated using digital micrographs collected from the whole mount corneas after trimming and were used for image analysis on the Metamorph image analysis system (Universal Imaging
Corporation, West Chester PA). Three measurements were taken: Disk placement distance from the limbus, number of vessels intersecting a 2. Omm perpendicular line at the midpoint of the disk placement distance, and percent blood vessel area of the diffusion determined by thresholding.
General Formulations: 0.1% BSA in PBS vehicle: 0. 025 g of BSA was added to 25.0 ml of sterile 1X phosphate buffered saline, gently shaken until fully dissolved, and filtered at 0.2 um. Individual 1.0 ml samples were aliquoted into 25 single use vials, and stored at-20 C until use. For the rHu-bFGF disks, a vial of this 0.1% BSA solution was allowed to thaw at room temperature.
Once thawed, 10 ul of a 100 mM stock solution of DTT was added to the 1 ml BSA vial to yield a final concentration of 1 mM DTT in 0.1% BSA. rHu-VEGF Dilutions:
Prior to the disk implant surgery, 23.8 ul of the 0.1% BSA vehicle above was added to a 10 gg rHu-VEGF lyophilized vial yielding a final concentration of 10 uM. rHu-bFGF: Stock concentration of 180 ng/yl :
R & D rHu-bFGF :
Added 139 gl of the appropriate vehicle above to the 25 Ag vial lyophilized vial. 13.3 ssl of the [180 ng/l] stock vial and added 26.6 ul of vehicle to yield a final concentration of 3.75 uM concentration.
Nitro-cellulose disk preparation: The tip of a 20-gauge needle was cut off square and beveled with emery paper to create a punch. This tip was then used to cut oust-0. 5mm diameter disks from a nitrocellulose filter paper sheet (Gelman Sciences). Prepared disks were then placed into
Eppendorf microfuge tubes containing solutions of either 0.1% BSA in PBS vehicle, 10 AM rHu-VEGF (R & D Systems,
Minneapolis, MN), or 3.75 AM rHu-bFGF (R & D Systems,
Minneapolis, MN) and allowed to soak for 45-60 min before use. Each nitrocellulose filter disk absorbs approximately 0.1 gl of solution.
In the rat micropocket assay, compounds of the present invention will inhibit angiogenesis at a dose of less than 50 mg/kg/day.
Tumor model
A431 cells (ATCC) are expanded in culture, harvested and injected subcutaneously into 5-8 week old female nude mice (CD1 nu/nu, Charles River Labs) (n=5-15). Subsequent administration of compound by oral gavage (10-200 mpk/dose) begins anywhere from day 0 to day 29 post tumor cell challenge and generally continues either once or twice a day for the duration of the experiment. Progression of tumor growth is followed by three dimensional caliper measurements and recorded as a function of time. Initial statistical analysis is done by repeated measures analysis of variance (RMANOVA), followed by Scheffe post hoc testing for multiple comparisons. Vehicle alone (Ora-Plus, pH 2. 0) is the negative control. Compounds of the present invention are active at doses less than 150 mpk.
Rat Adjuvant Arthritis Model:
The rat adjuvant arthritis model (Pearson, Proc. Soc.
Exp. Biol. 91,95-101 (1956)) is used to test the antiarthritic activity of compounds of the Formula I-III, or salts thereof. Adjuvant Arthritis can be treated using two different dosing schedules: either (i) starting time of immunization with adjuvant (prophylactic dosing); or from day 15 when the arthritic response is already established (therapeutic dosing). Preferably a therapeutic dosing schedule is used.
Rat Carrageenan-induced Analgesia Test
The rat carrageenan analgesia test was performed with materials, reagents and procedures essentially as described by Hargreaves, et al., (Pain, 32,77 (1988)). Male Sprague
Dawley rats were treated as previously described for the
Carrageenan Foot Pad Edema test. Three hours after the injection of the carrageenan, the rats were placed in a special plexiglass container with a transparent floor having a high intensity lamp as a radiant heat source, positionable under the floor. After an initial twenty minute period, thermal stimulation was begun on either the injected foot or on the contralateral injected foot. A photoelectric cell turned off the lamp and timer when light was interrupted by paw withdrawal. The time until the rat withdraws its foot was then measured.
The withdrawal latency in seconds was determined for the control and drug-treated groups, and percent inhibition of the hyperalgesic foot withdrawal determined.
Formulations
Also embraced within this invention is a class of pharmaceutical compositions comprising the active compounds of Formulas I-III in association with one or more non-toxic, pharmaceutically-acceptable carriers and/or diluents and/or adjuvants (collectively referred to herein as"carrier" materials) and, if desired, other active ingredients. The active compounds of the present invention may be administered by any suitable route, preferably in the form of a pharmaceutical composition adapted to such a route, and in a dose effective for the treatment intended.
The compounds and compositions of the present invention may, for example, be administered orally, mucosally, topically, rectally, pulmonarily such as by inhalation spray, or parentally including intravascularly, intravenously, intraperitoneally, subcutaneously, intramuscularly intrasternally and infusion techniques, in dosage unit formulations containing conventional pharmaceutically acceptable carriers, adjuvants, and vehicles.
The pharmaceutically active compounds of this invention can be processed in accordance with conventional methods of pharmacy to produce medicinal agents for administration to patients, including humans and other mammals.
For oral administration, the pharmaceutical composition may be in the form of, for example, a tablet, capsule, suspension or liquid. The pharmaceutical composition is preferably made in the form of a dosage unit containing a particular amount of the active ingredient.
Examples of such dosage units are tablets or capsules. For example, these may contain an amount of active ingredient from about 1 to 2000 mg, preferably from about 1 to 500 mg.
A suitable daily dose for a human or other mammal may vary widely depending on the condition of the patient and other factors, but, once again, can be determined using routine methods.
The amount of compounds which are administered and the dosage regimen for treating a disease condition with the compounds and/or compositions of this invention depends on a variety of factors, including the age, weight, sex and medical condition of the subject, the type of disease, the severity of the disease, the route and frequency of administration, and the particular compound employed. Thus, the dosage regimen may vary widely, but can be determined routinely using standard methods. A daily dose of about 0.01 to 500 mg/kg body weight, preferably between about 0.1 and about 50 mg/kg body weight, may be appropriate. The daily dose can be administered in one to four doses per day.
For therapeutic purposes, the active compounds of this invention are ordinarily combined with one or more adjuvants appropriate to the indicated route of administration. If administered per os, the compounds may be admixed with lactose, sucrose, starch powder, cellulose esters of alkanoic acids, cellulose alkyl esters, talc, stearic acid, magnesium stearate, magnesium oxide, sodium and calcium salts of phosphoric and sulfuric acids, gelatin, acacia gum, sodium alginate, polyvinylpyrrolidone, and/or polyvinyl alcohol, and then tableted or encapsulated for convenient administration. Such capsules or tablets may contain a controlled-release formulation as may be provided in a dispersion of active compound in hydroxypropylmethyl cellulose.
In the case of psoriasis and other skin conditions, it may be preferable to apply a topical preparation of compounds of this invention to the affected area two to four times a day.
Formulations suitable for topical administration include liquid or semi-liquid preparations suitable for penetration through the skin (e. g., liniments, lotions, ointments, creams, or pastes) and drops suitable for administration to the eye, ear, or nose. A suitable topical dose of active ingredient of a compound of the invention is 0. 1 mg to 150 mg administered one to four, preferably one or two times daily. For topical administration, the active ingredient may comprise from 0.001% to 10% w/w, e. g., from 1% to 2% by weight of the formulation, although it may comprise as much as 10% w/w, but preferably not more than 5% w/w, and more preferably from 0.1% to 1% of the formulation.
When formulated in an ointment, the active ingredients may be employed with either paraffinic or a water-miscible ointment base. Alternatively, the active ingredients may be formulated in a cream with an oil-in-water cream base. If desired, the aqueous phase of the cream base may include, for example at least 30% w/w of a polyhydric alcohol such as propylene glycol, butane-1, 3-diol, mannitol, sorbitol, glycerol, polyethylene glycol and mixtures thereof. The topical formulation may desirably include a compound which enhances absorption or penetration of the active ingredient through the skin or other affected areas. Examples of such dermal penetration enhancers include DMSO and related analogs.
The compounds of this invention can also be administered by a transdermal device. Preferably transdermal administration will be accomplished using a patch either of the reservoir and porous membrane type or of a solid matrix variety. In either case, the active agent is delivered continuously from the reservoir or microcapsules through a membrane into the active agent permeable adhesive, which is in contact with the skin or mucosa of the recipient. If the active agent is absorbed through the skin, a controlled and predetermined flow of the active agent is administered to the recipient. In the case of microcapsules, the encapsulating agent may also function as the membrane.
The oily phase of the emulsions of this invention may be constituted from known ingredients in a known manner.
While the phase may comprise merely an emulsifier, it may comprise a mixture of at least one emulsifier with a fat or an oil or with both a fat and an oil. Preferably, a hydrophilic emulsifier is included together with a lipophilic emulsifier which acts as a stabilizer. It is also preferred to include both an oil and a fat. Together, the emulsifier (s) with or without stabilizer (s) make-up the so-called emulsifying wax, and the wax together with the oil and fat make up the so-called emulsifying ointment base which forms the oily dispersed phase of the cream formulations. Emulsifiers and emulsion stabilizers suitable for use in the formulation of the present invention include
Tween 60, Span 80, cetostearyl alcohol, myristyl alcohol, glyceryl monostearate, sodium lauryl sulfate, glyceryl distearate alone or with a wax, or other materials well known in the art.
The choice of suitable oils or fats for the formulation is based on achieving the desired cosmetic properties, since the solubility of the active compound in most oils likely to be used in pharmaceutical emulsion formulations is very low. Thus, the cream should preferably be a non-greasy, non-staining and washable product with suitable consistency to avoid leakage from tubes or other containers. Straight or branched chain, mono-or dibasic alkyl esters such as di-isoadipate, isocetyl stearate, propylene glycol diester of coconut fatty acids, isopropyl myristate, decyl oleate, isopropyl palmitate, butyl stearate, 2-ethylhexyl palmitate or a blend of branched chain esters may be used.
These may be used alone or in combination depending on the properties required,
Alternatively, high melting point lipids such as white soft paraffin and/or liquid paraffin or other mineral oils can be used.
Formulations suitable for topical administration to the eye also include eye drops wherein the active ingredients are dissolved or suspended in suitable carrier, especially an aqueous solvent for the active ingredients.
The active ingredients are preferably present in such formulations in a concentration of 0.5 to 20%, advantageously 0.5 to 10% and particularly about 1.5% w/w.
Formulations for parenteral administration may be in the form of aqueous or non-aqueous isotonic sterile injection solutions or suspensions. These solutions and suspensions may be prepared from sterile powders or granules using one or more of the carriers or diluents mentioned for use in the formulations for oral administration or by using other suitable dispersing or wetting agents and suspending agents. The compounds may be dissolved in water, polyethylene glycol, propylene glycol, ethanol, corn oil, cottonseed oil, peanut oil, sesame oil, benzyl alcohol, sodium chloride, tragacanth gum, and/or various buffers.
Other adjuvants and modes of administration are well and widely known in the pharmaceutical art. The active ingredient may also be administered by injection as a composition with suitable carriers including saline, dextrose, or water, or with cyclodextrin (ie. Captisol), cosolvent solubilization (ie. propylene glycol) or micellar solubilization (ie. Tween 80).
The sterile injectable preparation may also be a sterile injectable solution or suspension in a non-toxic parenterally acceptable diluent or solvent, for example as a solution in 1, 3-butanediol. Among the acceptable vehicles and solvents that may be employed are water, Ringer's solution, and isotonic sodium chloride solution. In addition, sterile, fixed oils are conventionally employed as a solvent or suspending medium. For this purpose any bland fixed oil may be employed, including synthetic mono-or diglycerides. In addition, fatty acids such as oleic acid find use in the preparation of injectables.
For pulmonary administration, the pharmaceutical composition may be administered in the form of an aerosol or with an inhaler including dry powder aerosol.
Suppositories for rectal administration of the drug can be prepared by mixing the drug with a suitable nonirritating excipient such as cocoa butter and polyethylene glycols that are solid at ordinary temperatures but liquid at the rectal temperature and will therefore melt in the rectum and release the drug.
The pharmaceutical compositions may be subjected to conventional pharmaceutical operations such as sterilization and/or may contain conventional adjuvants, such as preservatives, stabilizers, wetting agents, emulsifiers, buffers etc. Tablets and pills can additionally be prepared with enteric coatings. Such compositions may also comprise adjuvants, such as wetting, sweetening, flavoring, and perfuming agents.
The foregoing is merely illustrative of the invention and is not intended to limit the invention to the disclosed compounds. Variations and changes which are obvious to one skilled in the art are intended to be within the scope and nature of the invention which are defined in the appended claims.
From the foregoing description, one skilled in the art can easily ascertain the essential characteristics of this invention, and without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to various usages and conditions.
All mentioned references, patents, applications and publications, are hereby incorporated by reference in their entirety, as if here written.