Abstract: The present invention is directed to novel cyanoalkylamino derivatives that are inhibitors of cysteine protease such as cathepsins K, S, B and L, in particular cathepsin K Pharmaceutical composition comprising these compounds, method of treating diseases mediated by unregulated cysteine protease activity, in particular cathepsin K utilizing these compounds and methods of preparing these compounds are also disclosed.

Abstract: This application relates to a compound of formula I (or a pro-drug thereof or a pharmaceutically acceptable salt of the compound or prodrug thereof) as defined herein, pharmaceutical compositions thereof, and its use as an inhibitor of factor Xa and/or thrombin, as well as a process for its preparation and intermediates therefor (I).

Abstract: Disclosed herein are novel heteroaromatic binuclear direct dyes, dye compositions containing these dyes and also a process for dyeing keratin fibers using them. In particular, the invention relates to heteroaromatic binuclear direct dyes comprising a pyridine nucleus. With these novel dyes, black shades that show good fastness can be obtained, and they also may show good stability in dye compositions.

Abstract: The invention is concerned with dicarboxamide derivatives of formula (I) wherein R1, R2, R3, R4, R5 and R6 are as defined in the specification, as well as physiologically acceptable salts thereof. These compounds inhibit the coagulation factor Xa and can be used in pharmaceutical compositions.

Abstract: Aminopyrimidine and aminopyridine (I) compounds, compositions and methods useful in the treatment of inflammatory, metabolic or malignant conditions, are provided herein

Abstract: The present invention provides novel 3-heterocyclic benzylamides and related derivatives having the general Formula I wherein R1, R2, R3, R4, R5, R6, A and Het are as defined in the specification, or a nontoxic pharmaceutically acceptable salt, solvate or hydrate thereof which are openers or activators of KCNQ potassium channels. The present invention also provides pharmaceutical compositions comprising said novel 3-heterocyclic benzylamides and to the method of treatment of disorders sensitive to KCNQ potassium channel opening activity such as migraine or a migraine attack, bipolar disorders, epilepsy, acute and chronic pain and anxiety.

Abstract: The present invention provides amino substituted pyridinyl methanone compounds; pharmaceutical compositions comprising the compounds and methods of synthesis thereof. The compounds, which are cyclin dependent kinase (CDK) inhibitors, can be used to treat or ameliorate CDK mediated disorders. The invention thus also provides the therapeutic or prophylactic use of the compounds and/or pharmaceutical compositions to treat such disorders.

Abstract: Compounds of Formula (I), their N-oxides and agriculturally suitable salts are disclosed which are useful as fungicides formula (I), (II) wherein A is a substituted pyridinyl ring; B is a substituted pyridinyl ring; W is C=L or SOn is O or S; R1 and R2 are each independently H; or C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl or C3-C6 cycloalkyl, each optionally substituted; R3 is H; or C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl or C3-C6 cycloalkyl, C2-C6 alkylcarbonyl, C2-C6 alkoxycarbonyl, C2-C6 alkylaminocarbonyl or C3-C8 dialkylaminocarbonyl; R4 is C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl or C3-C6 cycloalkyl, each optionally substituted; X is O or S; and n is 1 or 2; provided that when W is C?O and R1, R2 and R3 are H; then B is other than 4-trifluoromethyl-3-pyridinyl, 2-chloro-4-pyridinyl and 2,6-dihalo-4-pyridinyl.

Abstract: The present invention relates to compounds of Formula I: wherein: a) ?represents a 6-membered heterocyclic aromatic ring in which X1 is N and X2, X3 and X4 are each independently CR?; R? is independently H, halogen, cyano, hydroxy, C1-C3 alkyl, C1-C3 haloalkyl, cyclopropyl, C1-C3 alkoxy, C1-C3 haloalkoxy, C1-C3 alkylthio, aryl, C1-C3 NHC(O)alkyl, NHC(O)H, C1-C3 haloalkylthio, C2-C4 alkenyl, C2-C4 haloalkenyl, C2-C4 alkynyl, C2-C4 haloalkynyl or nitro wherein adjacent R? substituents may form a ring; b) Z is O, S or NORZ in which RZ is H or C1-C3 alkyl; and c) A represents (i) C3-C14 cycloalkyl, containing 1 or 3 heteroatoms and 0-2 unsaturations, which may be unsubstituted or substituted with halogen, hydroxy, C1-C6 alkyl, C1-C6 haloalkyl, cyano, nitro, aroyl, aryloxy, heteroaryloxy, C1-C6 alkylthio, arylthio, heteroarylthio, C1-C6 alkoxy, C1-C6 haloalkoxy, C1-C8 acyloxy, aryl, heteroaryl, C1-C6 acyl, C1-C6 carboalkoxy or amido unsubstituted or substituted with one or two C1 -C6 alkyl groups, o

Abstract: Selected heterocyclic compounds are effective for prophylaxis and treatment of diseases, such as angiogenesis mediated diseases. The invention encompasses novel compounds, analogs, prodrugs and pharmaceutically acceptable derivatives thereof, pharmaceutical compositions and methods for prophylaxis and treatment of diseases and other maladies or conditions involving, cancer and the like. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes.

Abstract: A compound having the formula (I): wherein: each R1, R2, R3 and R4 are independently selected from (C1-C10)-straight or branched alkyl, Ar-substituted- (C1-C10)-straight or branched alkyl, (C2-C10)-straight or branched alkenyl or alkynyl, or Ar-substituted-(C2-C10)-straight or branched alkenyl or alkynyl; wherein one to two CH2 groups of said alkyl, alkenyl, or alkynyl chains in each of R1, R2, R3 and R4 are optionally and independently replaced with O, S, S(O), S(O), S(O)2, C(O) or N(R5) in a chemically stable arrangement, wherein the CH2 group of R1 and R2 bound directly to said nitrogen cannot be replaced with C(O); or R1 and R2 taken together form a 4 to 7 membered ring; or R3 and R4 taken together form a 3 to 7 membered ring; wherein a CH2 in either the R1 and R2 ring system or the R3 and R4 ring system is independently and optionally replaced with O, C(O), N(R5), S, S(O), S(O)2 in a chemically stable arrangement; or wherein either or both of the R1 and R2 ring system and the R3 and R4 ring sy

Abstract: Compounds of formula (I) are antagonists of VLA-4 and/or alpha4/beta7, and as such are useful in the inhibition or prevention of cell adhesion and cell-adhesion mediated pathologies. These compounds may be formulated into pharmaceutical compositions and are suitable for use in the treatment of AIDS-related dementia, allergic conjunctivitis, allergic rhinitis, Alzheimer's disease, asthma, atherosclerosis, autologous bone marrow transplantation, certain types of toxic and immune-based nephritis, contact dermal hypersensitivity, inflammatory bowel disease including ulcerative colitis and Crohn's disease, inflammatory lung diseases, inflammatory sequelae of viral infections, meningitis, multiple sclerosis, multiple myeloma, myocarditis, organ transplantation, psoriasis, pulmonary fibrosis, restenosis, rhinitis, rheumatoid arthritis, septic arthritis, stroke, tumor metastasis, uveititis, and type I diabetes.

Abstract: Polymeric prodrugs of the formula: wherein B is selected from the group consisting of OH, leaving groups, residues of amine-containing moieties and a residues of hydroxyl-containing moieties; Y1 is selected from the group consisting of O, S, and NR5; M is NR3, O or S; Ar is a moiety which when included in Formula I forms a multi-substituted aromatic or heteroaromatic hydrocarbon or a multi-substituted heterocyclic group; (m) is zero or a positive integer; R1-3 and R5 are independently selected from the group consisting of hydrogen, C1-6 alkyls, C3-12 branched alkyls, C3-8 cycloalkyls, C1-6 substituted alkyls, C3-8 substituted cycloalkyls, aryls, substituted aryls, aralkyls, C1-6 heteroalkyls, substituted C1-6 heteroalkyls, C1-6 alkoxy, phenoxy and C1-6 heteroalkoxy; and R4 is a polymeric residue; as well as methods of making and using the same are disclosed.

Abstract: Selected amines are effective for prophylaxis and treatment of diseases, such as angiogenesis mediated diseases. The invention encompasses novel compounds, analogs, prodrugs and pharmaceutically acceptable salts thereof, pharmaceutical compositions and methods for prophylaxis and treatment of diseases and other maladies or conditions involving, cancer and the like. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes.

Abstract: Disclosed are novel compounds of the formula Also disclosed are pharmaceutical compositions comprising the compounds of Formula I. Also disclosed are methods of treating various diseases or conditions, such as, for example, allergy, allergy-induced airway responses, and congestion (e.g., nasal congestion) using the compounds of Formula I. Also disclosed are methods of treating various diseases or conditions, such as, for example, allergy, allergy-induced airway responses, and congestion (e.g., nasal congestion) using the compounds of Formula I in combination with a H. receptor antagonist.

Abstract: Substituted cyanoanthranilamide derivatives, their production and use as pharmaceutical agents for treating diseases that are triggered by persistent angiogenesis are described. The compounds according to the invention can be used as or in the case of psoriasis, Kaposi's sarcoma, restenosis, such as, e.g., stent-induced restenosis, endometriosis, Crohn's disease, Hodgkin's disease, leukemia; arthritis, such as rheumatoid arthritis, hemangioma, angiofibroma; eye diseases, such as diabetic retinopathy, neovascular glaucoma; renal diseases, such as glomerulonephritis, diabetic nephropathy, malignant nephrosclerosis, thrombic microangiopathic syndrome, transplant rejections and glomerulopathy; fibrotic diseases, such as cirrhosis of the liver, mesangial cell proliferative diseases, arteriosclerosis, injuries to nerve tissue, and inhibition of the reocclusion of vessels after balloon catheter treatment, in vascular prosthetics or after mechanical devices are used to keep vessels open, such as, e.g.

Abstract: Corticotropin-releasing factor (CRF) antagonists having the formulae wherein the dashed lines, A, B, Y, Z, G, R3, R4, R5, R6, R16 and R17 are as defined in the application, and processes for preparing them. These compounds and their pharmaceutically acceptable salts are useful in the treatment disorders including CNS and stress-related disorders.

Abstract: Described herein are compounds that are useful as caspase inhibitors having the formula: wherein Ring A is an optionally substituted piperidine, tetrahydroquinoline or tetrahydroisoquinoline ring; R1 is hydrogen, CN, CHN2, R, or CH2Y; R is an optionally substituted group selected from an aliphatic group, an aryl group, or an aralkyl group; Y is an electronegative leaving group; R2 is CO2H, CH2CO2H, or esters, amides or isosteres thereof; and R3 is hydrogen, an optionally substituted aryl group, an optionally substituted aralkyl group, or an optionally substituted C1-6 aliphatic group, R4 is an optionally substituted group selected from an aryl group or a heterocyclyl group, or R3 and R4 taken together with the nitrogen to which they are attached optionally form a substituted or unsubstituted monocyclic, bicyclic or tricyclic ring.

Abstract: A class of substituted pyridines that are useful for inhibiting the activity of cholesteryl ester transfer protein, and have the structural formula (IA), wherein R2, R3, R4, R5, and R6 are defined in the claims.

Abstract: The invention concerns amide derivatives of the Formula I wherein X is CH or N; Y is CH or N; m is 0-3; R1 is a group such as hydroxy, halogeno, trifluoromethyl, cyano, mercapto, nitro, amino, carboxy and carbamoyl; n is 0-3; R2 is a group such as hydroxy, halogeno, trifluoromethyl, cyano, mercapto, nitro, amino, carboxy and (1-6C)alkoxycarbonyl; R3 is hydrogen, halogeno, (1-6C)alkyl or (1-6C)alkoxy; q is 0-4; and Q is a group such as aryl, aryloxy, aryl-(1-6C)alkoxy, arylamino, N-(1-6C)alkyl-arylamino and aryl-(1-6C)alkylamino; or pharmaceutically-acceptable salts or in-vivo-cleavable esters thereof; processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of diseases or medical conditions mediated by cytokines.

Abstract: The object of the invention is to provide an excellent compound as a drug. The invention relates to a heterocyclic compound shown by the following formula: A—B—D—E  [1] wherein A is heteroaryl or its oxide; B is ethenylene; D is optionally substituted phenylene; and E is a group of the formula:  wherein G is optionally substituted phenyl; and R is heteroaryl or heteroarylmethyl, or a group of the formula: wherein n is an integer of 1 to 5; R5 and R6 are same or different and are independently selected from the group consisting of hydrogen, C1—C6 alkyl, hydroxyalkyl, aminoalkyl; or R5 and R6 taken together with the adjacent nitrogen atom may form 5- to 7-membered cyclic amino group for —NR5R6 or a salt thereof.

Abstract: The present invention relates to cancer therapy and to novel anticancer agents having a mechanism of action which is quite specific. It also relates to novel chemical compounds as well as their therapeutic application in humans.

Abstract: This application relates to a compound of formula I (or a pharmaceutically acceptable salt thereof) as defined herein, pharmaceutical compositions thereof, and its use as an inhibitor of factor Xa, as well as a process for its preparation and intermediates therefor.

Abstract: The present invention relates to novel CD40:CD154 binding interrupter compounds and use of these compounds and pharmaceutical compositions comprising them, to treat conditions associated with inappropriate CD154 activation in a subject. Specifically, this invention provides compounds which are identified by screening a library of small molecules for those that are capable of specifically binding CD154 and interrupting CD40:CD154 interaction.

Abstract: A process for making nevirapine, comprising the following steps: (a) reacting a 2-halo-3-pyridinecarbonitrile of the formula wherein X is a fluorine, chlorine, bromine or iodine atom, preferably chlorine or bromine, with cyclopropylamine, to yield 2-(cyclopropylamino)-3-pyridinecarbonitrile; (b) hydrolyzing the 2-(cyclopropylamino)-3-pyridinecarbonitrile to yield 2-(cyclopropylamino)-3-pyridine carboxylic acid; (c) isolating the 2-(cyclopropylamino)-3-pyridine carboxylic acid from the reaction medium; (e) treating the 2-(cyclopropylamino)-3-pyridine carboxylic acid with a chlorinating agent, to yield 2-(cyclopropylamino)-3-pyridinecarbonyl chloride; (f) reacting the 2-(cyclopropylamino)-3-pyridine carbonyl chloride with a 2-halo-4-methyl-3-pyridinamine of the formula wherein X is a fluorine, chlorine, bromine or iodine atom, preferably chlorine or bromine, to produce an N-(2-halo-4-methyl-3-pyridinyl)-2-(cyclopropylamino)-3-pyridinecarboxamide; and (g) cyclizing the N-

Abstract: The present invention relates to novel pyridine carboxamide or sulfonamide derivative compounds of the following formula: wherein R1 to R6 have the meanings provided herein. The invention further relates to combinatorial libraries containing two or more such compounds, as well as methods of preparing pyridine carboxamide or sulfonamide derivative compounds.

Abstract: Selected amines are effective for prophylaxis and treatment of diseases, such as angiogenesis mediated diseases. The invention encompasses novel compounds, analogs, prodrugs and pharmaceutically acceptable salts thereof, pharmaceutical compositions and methods for prophylaxis and treatment of diseases and other maladies or conditions involving, cancer and the like. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes.

Abstract: The present invention is directed to a series of substituted pyridine compounds, a method for selectively controlling neurotransmitter release in mammals using these compounds, and pharmaceutical compositions containing these compounds. Preferred compounds are 3′-(5′- and/or 6′-substituted) pyridyl ethers.

Abstract: This application relates to a compound of formula I (or a pharmaceutically acceptable salt thereof) as defined herein, pharmaceutical compositions thereof, and its use as an inhibitor of factor Xa, as well as a process for its preparation and intermediates therefor.

Abstract: Compounds useful as inhibitors of PDE4 in the treatment of diseases regulated by the activation and degranulation of eosinophils, especially asthma, chronic bronchitis, and chronic obstructive pulmonary disease, of Formula (1.0.

Abstract: The invention discloses novel compounds of the pyridinium series useful for the management of diabetes and aging-related vascular complications, including kidney disease, nerve damage, atherosclerosis, retinopathy, dermatological disorders and discoloration of teeth, by breaking preformed AGE, of the general formula I, or pharmaceutically acceptable salts thereof, wherein, R1, R2, R3, X and m are as defined in the specification.

Abstract: Dihydropyridine derivatives represented by the following formula: analogs thereof and pharmaceutically acceptable salts thereof have an activity of selectively inhibiting the action of N-type calcium channel, and they are used as therapeutic agents for various diseases relating to N-type calcium channel.

Abstract: The present invention relates to inhibitors of p38, a mammalian protein kinase involved cell proliferation, cell death and response to extracellular stimuli. The invention also relates to methods for producing these inhibitors. The invention also provides pharmaceutical compositions comprising the inhibitors of the invention and methods of utilizing those compositions in the treatment and prevention of various disorders.

Abstract: A class of substituted pyridines that are useful for inhibiting the activity of cholesteryl ester transfer protein, and have the structural formula (IA), wherein R2, R3, R4, R5, and R6 are defined in the claims.

Abstract: This invention relates to a series of N-heterocyclyl hydrazides of Formula I, 1

Abstract: Compounds of Formula (I), and their N-oxides and agriculturally suitable salts, are disclosed which are useful as arthropodicides wherein A is H; E is H or C1-C3 alkyl; or A and E can be taken together to form —CH2—, —CH2CH2—, —O—, —S—, —S(O)—, —S(O)2—, —NR8—, —OCH2—, —SCH2—, —N(R8)CH2—, substituted —CH2— and substituted —CH2CH2—, the substituents independently selected from 1-2 halogen and 1-2 methyl; W is N or CR4;X is CR5R6, O, S, NR7 or a direct bond, provided that when W is N, then X is other than a direct bond; Y is H, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C1-C3 alkylsulfonyl, C3-C6 cycloalkyl, C3-C6 cycloalkylalkyl, NR9R10, N═CR11R12, OR7, COR13, CO2R14 or C1-C6 alkyl substituted by at least one group selected from halogen, C1-C3 alkoxy, CN, NO2, S(O)1R15, COR13, CO2R14 and optionally substituted phenyl; Z is O or S; and R2, R3, R4, R5, R6, R7, R8, R9

Abstract: 4-Aminopicolinic acids having aryl or heteroaryl substituents in the 6-position and their amine and acid derivatives are potent herbicides demonstrating a broad spectrum of weed control.

Abstract: A five-step process for preparing 1-(6-methylpyridin-3-yl)-2-[4-methylsulfonyl)phenyl]ethanone of formula (I): The process involves the following steps: (a) 4-(methylthio)benzyl alcohol is converted into 4-(methylthio)benzyl chloride; (b) 4-(methylthio)benzyl chloride is converted with an alkali metal cyanide into 4-(methylthio)phenylacetonitrile; (c) 4-(methylthio)phenylacetonitrile is condensed with a 6-methyinicotinic ester to give 3-[2-(2-(methylthio)phenyl)-2-cyanoacetyl](6-methyl)pyridine; (d) 3-[2-(4-(methylthio)phenyl-2-cyanoacetyl](6-methyl)pyridine is hydrolyzed and decarboxylated under acidic conditions to give 3-[2-(4-(methylthio)-phenyl)acetyl](6-methyl)pyridine is hydrolyzed and decarboxylated under acidic conditions to give 3-[2-(4-(methylthio)phenyl)acetyl(6-methyl)pyridine; and (e) 3-[2(4-(methylthio)phenyl)acetyl](6-methyl)pyridine is oxidized to give the end product.

Abstract: Disclosed are compounds that inhibit the microbial NAD synthetase enzyme. For example, disclosed are compounds of the formula Ar1—X—Ar2—Y—L—Z—Q, wherein Q is Q1Ar3 or Ar3Q1; Ar1, Ar2, and Ar3 are independently aryl or heteroaryl, optionally substituted with one or more substituents; X, Y, and Z are independently selected from the group consisting of a covalent bond or groups containing one or more of C, H, N, O, S atoms; L is a linker and Q1 is an alkylenyl, alkylenyl carbonyloxy alkyl, or alkylenyl carbonylamino alkyl group, optionally having a substituent; a covalent bond; a group containing amidine or guanidine function wherein the amidine or guanidine may be optionally N-substituted with an alkyl; or a zwitterion; or a pharmaceutically acceptable salt thereof.

Abstract: The invention concerns amide derivatives of the Formula I wherein X is CH or N; Y is CH or N; m is 0-3; R1 is a group such as hydroxy, halogeno, trifluoromethyl, cyano, mercapto, nitro, amino, carboxy and carbamoyl; n is 0-3; R2 is a group such as hydroxy, halogeno, trifluoromethyl, cyano, mercapto, nitro, amino, carboxy and (1-6C)alkoxycarbonyl; R3 is hydrogen, halogeno, (1-6C)alkyl or (1-6C)alkoxy; q is 0-4; and Q is a group such as aryl, aryloxy, aryl-(1-6C)alkoxy, arylamino, N-(1-6C)alkyl-arylamino and aryl-(1-6C)alkylamino; or pharmaceutically-acceptable salts or in-vivo-cleavable esters thereof; processes for their preparation, pharmaceutical compositions containing them and their use in the treatment of diseases or medical conditions mediated by cytokines.

Abstract: The invention encompasses the novel compound of Formula I as well as a method of treating COX-2 mediated diseases comprising administration to a patient in need of such treatment of a non-toxic therapeutically effective amount of a compound of Formula I.

Abstract: The invention relates to a process for the preparation of 5-arylnicotinaldehydes by reduction of the corresponding 5-arylnicotinic acids by catalytic hydrogenation in the presence of carboxylic anhydrides in which the catalyst used is a palladium/ligand complex, characterized in that the molar ratio between palladium and ligand is from 1:5 to 1:15 in the case of monodentate ligands and from 1:2.5 to 1:7.5 in the case of bidentate ligands.

Abstract: Compounds of formula (1): wherein R1 is a hydrogen atom or an optionally substituted cycloaliphatic, polycycloaliphatic, heterocycloaliphatic, polyheterocycloaliphatic, aromatic or heteroaromatic group; Alk1 is an optionally substituted aliphatic or heteroaliphatic chain; L1 is a linker atom or group; r and s is each zero or an integer 1; R2 and R3, which may be the same or different, is each a hydrogen or halogen atom or a straight or branched alkyl, haloalkyl, alkoxy, haloalkoxy, hydroxyl or nitro group; Alk2 is a straight or branched alkylene chain; m is zero or an integer 1; R4 is a hydrogen atom or a methyl group; R5 is a hydrogen atom or a straight or branched alkyl group; R6 is a group —(CH2)tR7 in which t is zero or the integer 1 and R7 is an optionally substituted polycycloaliphatic, heterocycloaliphatic, polyheterocycloaliphatic, aromatic or heteroaromatic group; R is a carboxylic acid (—CO2H) or a derivative thereof; and the salts, solvates and hydrates the

Abstract: The present invention is directed to substituted N′-(arylcarbonyl)-benzhydrazides, N′-(arylcarbonyl)-benzylidene-hydrazides and analogs thereof, represented by the Formulae I and II: 1

Abstract: Compounds of the formula wherein R1, R2, R3, R4, X and n are defined in the specification, are useful for the treatment of anxiety, depression and related CNS disorders, and other related conditions such as the treatment of alcohol and drug withdrawal, sexual dysfunction and Alzheimer's disease.

Abstract: Dihydropyridine derivatives represented by the following formula: 1

Abstract: Polymeric prodrugs of the formula: 1

Abstract: Compounds of formula (I): wherein Rx is cyano or bromo; R1 is halo; R2 is C1-C3 alkyl, and pharmaceutically acceptable salts and prodrugs thereof have activity as antiretrovirals.

Abstract: Compounds of formula (1) are described: in which Het is a heteroaromatic group, Alk1 is an optionally substituted aliphatic or heteroaliphatic chain and R is a carboxylic acid or a derivative thereof. The compounds are able to inhibit the binding of &agr;4 integrins to their ligands and are of use in the prophylaxis and treatment of immune or inflammatory disorders.

Abstract: The present invention provides the compound having the structure: wherein each of R1 and R2 are independently the same as or different from each other; when R1 and R2 are the same, each is a substituted or unsubstituted arylamino, cycloalkylamino, pyridineamino, piperidino, 9-purine-6-amine, or thiozoleamino group; when R1 and R2 are different, R1=R3—N—R4, wherein each of R3 and R4 are independently the same as or different from each other and are a hydrogen atom, a hydroxyl group, a substituted or unsubstituted, branched or unbranched alkyl, alkenyl, cycloalkyl, aryl, alkyloxy, aryloxy, arylalkyloxy, or pyridine group, or R3 and R4 bond together to form a piperidine group and R2 is a hydroxylamino, hydroxyl, amino, alkylamino, dialkylamino or alkyloxy group; and n is an integer from about 4 to about 8. The present invention also provides a method of selectively inducing terminal differentiation of neoplastic cells and thereby inhibiting proliferation of such cells.