AU766083B2

AU766083B2 - IL-8 receptor antagonists

Info

Publication number: AU766083B2
Application number: AU57413/00A
Authority: AU
Inventors: Gregory Martin Benson; Robert P. Hertzberg; Anthony J. Jurewicz; Melvin Clarence Rutledge; Daniel F. Veber; Katherine L. Widdowson
Original assignee: SmithKline Beecham Corp
Current assignee: SmithKline Beecham Corp
Priority date: 1999-06-16
Filing date: 2000-06-15
Publication date: 2003-10-09
Anticipated expiration: 2020-06-15
Also published as: CZ20014471A3; HUP0201571A2; CO5200760A1; EP1185261A1; NZ514695A; PL352232A1; AU5741300A; MXPA01013004A; JP2003501459A; KR20020010709A; NO20016053D0; CN1355697A; TR200103680T2; HUP0201571A3; CA2377341A1; NO20016053L; AR030391A1; ZA200109479B; HK1044483A1; WO2000076495A1

Description

WO 00/76495 PCT/US00/16499 IL-8 RECEPTOR ANTAGONISTS FIELD OF THE INVENTION This invention relates to a novel group of phenyl urea compounds, processes for the preparation thereof, the use thereof in treating IL-8, GROa, GROP, GROy and NAP-2 mediated diseases and pharmaceutical compositions for use in such therapy.

BACKGROUND OF THE INVENTION Many different names have been applied to Interleukin-8 such as neutrophil attractant/activation protein-1 (NAP-1), monocyte derived neutrophil chemotactic factor (MDNCF), neutrophil activating factor (NAF), and T-cell lymphocyte chemotactic factor. Interleukin-8 is a chemoattractant for neutrophils, basophils, and a subset of T-cells. It is produced by a majority of nucleated cells including macrophages, fibroblasts, endothelial and epithelial cells exposed to TNF, IL-la, IL-1 or LPS, and by neutrophils themselves when exposed to LPS or chemotactic factors such as FMLP. M. Baggiolini et al, J. Clin. Invest. 84, 1045 (1989); J. Schroder et al, J. Immunol. 139, 3474 (1987) and J. Immunol. 144, 2223 (1990) Strieter, et al, Science 243, 1467 (1989) and J. Biol. Chem. 264, 10621 (1989); Cassatella et al, J. Immunol. 148, 3216 (1992).

GROa, GROp, GROy and NAP-2 also belong to the chemokine a family. Like IL-8 these chemokines have also been referred to by different names. For instance GROac, P, yhave been referred to as MGSAc, P and y respectively (Melanoma Growth Stimulating Activity), see Richmond et al, J. Cell Physiology 129, 375 (1986) and Chang et al, J. Immunol 148, 451 (1992). All of the chemokines of the a-family which possess the ELR motif directly preceding the CXC motif bind to the IL-8 B receptor.

IL-8, GROa, GROp, GROy and NAP-2 stimulate a number of functions in vitro. They have all been shown to have chemoattractant properties for neutrophils, while IL-8 and GROa have demonstrated T-lymphocytes, and basophiles chemotactic activity. In addition IL-8 can induce histamine release from basophils from both normal and atopic individuals GRO-ax and IL-8 can in addition, induce lysozomal enzyme release and respiratory burst from neutrophils. IL-8 has also been shown to increase the surface expression of Mac-1 (CD1 lb/CD 18) on neutrophils without de novo protein synthesis. This may contribute to increased adhesion of the neutrophils to vascular endothelial cells. Many known diseases are characterized by massive neutrophil infiltration. As IL-8, GROa, GROp, GROy and NAP-2 promote the accumulation and activation of neutrophils, these chemokines have been implicated in a wide range of acute and chronic inflammatory disorders including psoriasis and rheumatoid arthritis, Baggiolini et al, FEBS Lett. 307, 97 (1992); Miller et al, Crit. Rev.

Immunol. 12, 17 (1992); Oppenheim et al, Annu. Rev. Immunol. 9, 617 (1991); Seitz et al., J. Clin. Invest. 87,463 (1991); Miller et al., Am. Rev. Respir. Dis. 146, 427 -1- S WO 00/76495 PCT/US00/16499 (1992); Donnely et al., Lancet 341, 643 (1993). In addition the ELR chemokines (those containing the amino acids ELR motif just prior to the CXC motif) have also been implicated in angiostasis. Strieter et al, Science 258, 1798 (1992).

In vitro, IL-8, GROa, GROp, GROy and NAP-2 induce neutrophil shape change, chemotaxis, granule release, and respiratory burst, by binding to and activating receptors of the seven-transmembrane, G-protein-linked family, in particular by binding to IL-8 receptors, most notably the B-receptor. Thomas et al., J. Biol. Chem.

266, 14839 (1991); and Holmes et al., Science 253, 1278 (1991). The development of non-peptide small molecule antagonists for members of this receptor family has precedent. For a review see R. Freidinger in: Progress in Drug Research, Vol. 40, pp.

33-98, Birkhauser Verlag, Basel 1993. Hence, the IL-8 receptor represents a promising target for the development of novel anti-inflammatory agents.

Two high affinity human IL-8 receptors (77% homology) have been characterized: IL-8Ra, which binds only IL-8 with high affinity, and IL-8R, which has high affinity for IL-8 as well as for GRO-a, GROp, GROy and NAP-2. See Holmes et al., supra; Murphy et al., Science 253, 1280 (1991); Lee et al., J. Biol. Chem.

267, 16283 (1992); LaRosa et al., J. Biol. Chem. 267, 25402 (1992); and Gayle et al., J. Biol. Chem. 268, 7283 (1993).

There remains a need for treatment, in this field, for compounds which are capable of binding to the IL-8 oa or p receptor. Therefore, conditions associated with an increase in IL-8 production (which is responsible for chemotaxis of neutrophil and Tcells subsets into the inflammatory site) would benefit by compounds which are inhibitors of IL-8 receptor binding.

SUMMARY OF THE INVENTION This invention provides for a method of treating a chemokine mediated disease, wherein the chemokine is one which binds to an IL-8 a or P receptor and which method comprises administering an effective amount of a compound of Formula or a pharmaceutically acceptable salt thereof. In particular the chemokine is IL-8.

This invention also relates to a method of inhibiting the binding of IL-8 to its receptors in a mammal in need thereof which comprises administering to said mammal an effective amount of a compound of Formula Compounds of Formula useful in the present invention are represented by the structure: x R H H (I) wherein -2- 1. WO 00/76495 WOOO/6495PCT/USOO/16499 X is oxygen or sulfur; R is any functional moiety having an ionizable hydrogen and a pKa of 10 or less; R I is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted Cl-1 alkyl; CI-10 alkyl; C2-10 alkenyl; Ci-iQ ailkoxy; halosubstituted alkoxy; azide; S(O)tR4; hydroxy; hydroxy C I 4alkyl; aryl; aryl Cl..4 alkyl; aryloxy; aryl Cj-4 alkyloxy; heteroaryl; heteroarylalkyl; heterocyclic, heterocyclic Cl- 4alkyl; heteroaryl C 1-4 alkyloxy; aryl. C2- 10 alkenyl; heteroaryl C2- 10 alkenyl; heterocyclic C2-l1O alkenyl; NR4R5; C2-..10 alkenyl C(O)NR4R5; C(O)NR4Ri10; S(O)3H; S 3R8; C I 1 alkyl C (O)Rl11; C2- 10alkenyl C(O)Ri1i; C2-10 alkenyl C(O)ORll1; C(O)Rii1; C(O)0R12; OC(O) Rll1; NR4C(O)RI 1; or two R I moieties together may form Q-(CH2)sO- or a 5 to 6 membered unsaturated ring; t isO0, or an integer having a value of 1 or 2; s is an integer having a value of I to 3; R4 and R5 are independently hydrogen, optionally substituted Cl- alkyl, optionally substituted aryl, optionally substituted aryl C I -4alkyl, optionally substituted heteroaryl, optionally substituted heteroaryl C I -4alkyl, heterocyclic, heterocyclic C1-4 alkyl, or R4 and R5 together with the nitrogen to which they are attached form a 5 to 7 member ring which may optionally comprise an additional heteroatom selected from O/NIS; Y is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted alkyl; Ci-lo alkyl; C2-10 alkenyl; Cl-lo alkoxy; halosubstituted Cl-1O alkoxy; azide; S(O)tR4; hydroxy; hydroxyCl-alkyl; aryl; aryl CI-4 alkyl; aryloxy; arylC 1 -4 alkyloxy; heteroaryl; heteroarylalkyl; heteroaryl C 1-4 alkyloxy; heterocyclic, heterocyclic C I -4alkyl; aryl C2-10 alkenyl; heteroaryl C2-10 alkenyl; heterocyclic C2-10 alkenyl; NR4R5; C2- 10 alkenyl C(O)NR4R5; C(O)NR4RIO; S(O)3H; S(O)3R8; CI-10 alkyl. C(O)Rl 1; C2-10 alkenyl C(O)RI1; C2-10 alkenyl. C(O)ORi 1; C(O)Rl 1; C(O)0R12; OC(O) RI 1; NR4C(O)R1 1; or two Y moieties together may form Q-(CH2)sO- or a 5 to 6 membered unsaturated ring; n is an integer having a value of 1 to 3; m is an integer having a value of 1 to 3; R8 is hydrogen or Ci1A- alkyl; R 10 is C1I.-.10 alkyl C(O)2R8; Rl 1 is hydrogen, CI-4 alkyl, optionally substituted aryl, optionally substituted aryl C 1.4alkyl, optionally substituted heteroaryl, optionally substituted heteroarylC 1 -4 alkyl, optionally substituted heterocyclic, or optionally substituted heterocyclicC 1-4 alkyl; -3- 4. WO 00/76495 PCT/US00/16499 R12 is hydrogen, Cl-10 alkyl, optionally substituted aryl or optionally substituted arylalkyl; or a pharmaceutically acceptably salt thereof.

Another aspect of the present invention is to a method of treating a chemokine mediated disease, wherein the chemokine is one which binds to an IL-8 a or P receptor and which method comprises administering an effective amount of a compound of Formula (II) or a pharmaceutically acceptable salt thereof, as defined herein.

This invention also relates to a method of inhibiting the binding of IL-8 to its receptors in a mammal in need thereof which comprises administering to said mammal an effective amount of a compound of Formula as defined herein.

This invention also relates to the novel compounds of Formula or a pharmaceutically acceptable salt thereof, as defined herein.

Another aspect of the present invention is to a method of treating a chemokine mediated disease, wherein the chemokine is one which binds to an IL-8 a or p receptor and which method comprises administering an effective amount of a compound of Formula (III) or a pharmaceutically acceptable salt thereof, as defined herein.

This invention also relates to a method of inhibiting the binding of IL-8 to its receptors in a mammal in need thereof which comprises administering to said mammal an effective amount of a compound of Formula (III), as defined herein.

DETAILED DESCRIPTION OF THE INVENTION The compounds of Formula may also be used in association with the veterinary treatment of mammals, other than humans, in need of inhibition of IL-8 or other chemokines which bind to the IL-8 a and P receptors. Chemokine mediated diseases for treatment, therapeutically or prophylactically, in animals include disease states such as those noted herein in the Methods of Treatment section.

In compounds of Formula R is suitably any functional moiety which provides an ionizable hydrogen having a pKa of 10 or less, preferably from about 3 to 9, more preferably from about 3 to 7. Such functional groups include, but are not limited to, hydroxy, carboxylic acid, thiol, -SR2 -OR2, -NH-C(O)Ra, -C(O)NR6R7, a substituted sulfonamides of the formula -NHS(0)2Rb, -S(0)2NHRc, NHC(X2)NHRb, or a tetrazolyl; wherein X2 is oxygen or sulfur, preferably oxygen. Preferably, the functional group is other than a sulfonic acid, either directly or as a substituent group on the aryl, heteroaryl, or heterocyclic moiety ring, such as in SR2 or OR2. More preferably R is OH, SH, or NHS(0)2Rb. Suitably, R2 is a substituted aryl, heteroaryl, or heterocyclic moiety which ring has the functional moiety providing the ionizable hydrogen having a pKa of 10 or less.

-4- 1. wo oon76495 PCT/USOO/16499 Suitably, R6 and R7 are independently hydrogen or a C1-4 alkyl group, or R6 and R7 together with the nitrogen to which they are attached form a 5 to 7 member ring which ring may optionally contain an additional heteroatom which heteroatom is selected from oxygen, nitrogen or sulfur. This heteroring may be optionally substituted as defined herein.

Suitably Ra is an alkyl, aryl, arylC1-4alkyl, heteroaryl, heteroarylC1-4alkyl, heterocyclic, or a heterocyclic C1-4alkyl moiety, all of which may be optionally substituted, as defined herein below.

Suitably, Rb is a NR6R7, alkyl, aryl, arylC1-4alkyl, arylC2-4alkenyl, heteroaryl, heteroarylC -4alkyl, heteroarylC2-4 alkenyl, heterocyclic, or heterocyclic Ci-4alkyl, or a heterocyclic C2-4alkenyl moiety, camphor, all of which may be optionally substituted one to three times independently by halogen; nitro; halosubstituted C1-4 alkyl, such as CF3; C1-4 alkyl, such as methyl; C1-4 alkoxy, such as methoxy; NR9C(O)Ra; C(O)NR6R7, S(0)3H, or C(O)OC 1- 4 alkyl. Rb is preferably an optionally substituted phenyl, benzyl, or styryl. When Rb is a heteroaryl preferably it is an optionally substituted thiazole, optionally substituted thienyl, or optionally substituted quinolinyl ring. Wherein R9 is hydrogen or a CI-4 alkyl, preferably hydrogen, and suitably when the substituent group is NR9C(O)Ra, then Ra is preferably an alkyl group, such as methyl.

Suitably Rc is hydrogen, alkyl, aryl, arylC1 -4alkyl, arylCl-4alkenyl, heteroaryl, heteroarylC -4alkyl, heteroarylC -4alkenyl, heterocyclic, or heterocyclic C1-4alkyl, or a heterocyclic C1-4alkenyl moiety, all of which may be optionally substituted one to three times independently by halogen, nitro, halosubstituted C 1-4 alkyl, C1-4 alkyl, C1- 4 alkoxy, NR9C(O)Ra, C(O)NR6R7, S(0)3H, or C(O)OC1-4 alkyl, wherein R9 is hydrogen or a C1-4 alkyl. Preferably, Re is an optionally substituted phenyl.

When R is an OR2 or SR2 moiety it is recognized by one of skill in the art that the aryl ring must, therefore, contain the required ionizable hydrogen. The aryl ring may also be additionally substituted, independently, by one to three groups, which groups may also contain an additional ionizable group, and which include but are not limited to, halogen, nitro, halosubstituted C1-4 alkyl, C1-4 alkyl, Cl-4 alkoxy, hydroxy, SH, -C(O)NR6R7, -NH-C(O)Ra, -NHS(0)2Rb, S(0)2NR6R7, C(O)OR8, or a tetrazolyl ring.

In compounds of Formula suitably R1 is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted CI-10 alkyl, such as CF3; C1-10 alkyl, such as methyl, ethyl, isopropyl, or n-propyl; C2-10 alkenyl; CI-10 alkoxy, such as methoxy, or ethoxy; halosubstituted C -10 alkoxy, such as trifluoromethoxy; azide; S(O)tR4, wherein t is 0, 1 or 2; hydroxy; hydroxy CI-4alkyl, such as methanol or ethanol; aryl, such as phenyl or naphthyl; aryl C1-4 alkyl, such as benzyl; aryloxy, such as phenoxy; aryl C1-4 alkyloxy, such as benzyloxy; heteroaryl; heteroarylalkyl; 4. WO oon76495 PCT/US00/16499 heteroaryl C1-4 alkyloxy; aryl C2-10 alkenyl heteroaryl C2-10 alkenyl; NR4R5; C2alkenyl-C(O)NR4R5; C(O)NR4R5; C(0)NR4R10; S(0)3H; S(O)3R8; Cl-10 alkyl C(O)R11; C2-10 alkenyl C(O)R 1, C2-10 alkenyl C(O)OR 1; C(O)R11; C(O)OR 2, such as carboxy, methylcarboxylate or phenylbenzoate; OC(0) R 11; NR4C(0)R 11; azido; or two RI moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; and s is an integer having a value of 1 to 3. The aryl, arylalkyl, arylalkenyl, heteroaryl, heteroarylalkyl, heteroarylalkenyl, heterocyclic, heterocyclicalkyl, and heterocyclicalkenyl moieties may all be optionally substituted as defined herein below. Preferably RI is other than azido or S(0)3Rg.

When R1 forms a dioxybridge, s is preferably 1. When R1 forms an additional unsaturated ring, it is preferably 6 membered resulting in a naphthylene ring system.

This naphthylene ring may be substituted independently, 1 to 3 times by the other R1 moieties as defined above.

Suitably, R4 and R5 are independently hydrogen, optionally substituted C1-4 alkyl, optionally substituted aryl, optionally substituted aryl Cl-4alkyl, optionally substituted heteroaryl, optionally substituted heteroaryl C1-4alkyl, heterocyclic, heterocyclicC 1-4 alkyl, or R4 and R5 together with the nitrogen to which they are attached form a 5 to 7 member ring which may optionally comprise an additional heteroatom selected from O/N/S.

R10 is suitably CI-10 alkyl C(O)2R8, such as CH2C(0)2H or CH2C(0)2CH3.

R11 is suitably hydrogen, C1-4 alkyl, aryl, aryl C1-4 alkyl, heteroaryl, heteroaryl C1-4alkyl, heterocyclic, or heterocyclic C -4alkyl.

R12 is suitably hydrogen, C1-10 alkyl, optionally substituted aryl or optionally substituted arylalkyl.

Preferably RI is halogen, cyano, nitro, CF3, C(O)NR4R5, alkenyl C(O) R4R10, alkenyl C(O)ORI2, heteroaryl, heteroarylalkyl heteroaryl alkenyl, or and preferably R4 and R5 are both hydrogen or one is phenyl. A preferred ring substitution for R1 is in the 4-position of the phenyl ring.

When R is OH, SH or NSO2Rb than RI is preferably substituted in the 3position, the 4- position or di substituted in the 3,4- position. The substituent group is suitably an electron withdrawing moiety. Preferably when R is OH, SH or NSO2Rb, than R1 is nitro, halogen, cyano, trifluoromethyl group, When R is carboxylic acid, than RI is preferably hydrogen, or RI is preferably substituted in the 4-position, more preferably substituted by trifluoromethyl or chloro.

In compounds of Formula suitably Y is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted CI-10 alkyl; C1-10 alkyl; C2-10 alkenyl; C1-10 alkoxy; halosubstituted C1-10 alkoxy; azide; S(O)tR4; hydroxy; hydroxy C1-4alkyl; aryl; aryl C1-4 alkyl; aryloxy; arylC1-4 alkyloxy; aryl C2-10 alkenyl; heteroaryl; heteroarylalkyl; heteroaryl Cl-4 alkyloxy; heteroaryl C2-10 WO 00/76495 WOO~f6495PCTIUSOOII6499 alkenyl; heterocyclic, heterocyclic Ci 1 4alkyl; heterocyciicC2. 10 alkenyl; NR4R5; C2alkenyl C(O)NR4R5; C(O)NR4R5; C(O)NR4R 10; S(O)3H; S(O)3R8; C 1-10 alkyl C(O)Rii1; C2-10 alkenyl C(O)Rii1; C2-10 alkenyl C(O)ORIi1; C(O)RlIi; C(O)0R12; OC(Q) RI 1; NR4C(O)Rl 1; azido; or two Y moieties together may form O-(CH2)sOor a 5 to 6 membered unsaturated ring. When Y forms a dioxybridge, s is preferably 1.

When Y forms an additional unsaturated ring, it is preferably 6 membered resulting in a naphthylene ring system. This naphthylene ring may be substituted 1 to 3 times by other Y moieties as defined above. The aryl, heteroaryl and heterocyclic moieties noted above may all be optionally substituted as defined herein. Preferably RI is other than azido or S(O)3R8.

Y is preferably a halogen, C 1- alkoxy, optionally substituted aryl, optionally substituted aryloxy or arylalkoxy, methylene dioxy, NR4R5, thio Cl-4alkyl, thioaryl, balosubstituted alkoxy, optionally substituted Cl1.-4 alkyl, or hydroxy alkyl. Y is more preferably mono-substituted halogen, disubstituted halogen, mono-substituted alkoxy, disubstituted alkoxy, methylenedioxy, aryl, or alkyl, more preferably these groups are mono or di-substituted in the position or 3'-position.

While Y may be substituted in any of the 5 ring positions, preferably when R is OH, SH, or NSO2Rb, Y is preferably mono-substituted in the 2'-position or 3'position, with the preferably being unsubstituted. If the ring is disubstituted, when R is OH, SH, or NSO2Rb, substituents are preferably in the 2' or 3'position of a monocyclic ring. While both R I and Y can both be hydrogen, it is preferred that at least one of the rings be substituted, preferably both rings are substituted.

In compounds of Formula X is suitably oxygen or sulfur, preferably oxygen.

While not explicitly covered by Formula or (III), another aspect of this invention are the symmetrical bis compounds which are included for each structure.

Compounds exemplified by this bis like structure include: N-(Bis (2-hydroxy-4-nitro phenyl) N'-(dianisdine) diurea; and 4-Methylene bis(N-(2-chloro phenyl) N'-(2-hydroxy 4-nitro phenyl) urea). Exemplified compounds of Formula include: N-[2-Hydroxy-4-(methoxycarbonyl)phenyl]-N'-phenylurea; N-[5-Nitro-2-hydroxyphenyl]-N'-phenyl urea; 3-Hydroxy-4- [(phenylamino)carbonyl] amino lbenzamide N-(2-Hydroxy-4-fluorophenyl)-N'-phenyl urea; 2- [(Phenylamino)carbonyl] amino) thiphenoIN-(2-Carboxy-4-hydroxyphenyl)-N'phenyl urea; N-[2-Hydroxy-4-(trifluoromethyl)phenyll-N'-phenyI urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-hydroxy-4-nitrophenyl) urea; N-(2-Hydroxy-4-nitrophenyl)-N'-phenyl-thiourea; WO 00/76495 WO 0076495PCTIUSOO/16499 N-(4-Nitro-2-(phenylsulfonylainino)phenyl)-N'-phenyl urea; nitrophenyl)-N'-(3-methoxy-2-thienyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(3-methoxy-2-thienyl)urea (N-(2-Hydroxy-4-nitrophenyl)-N'-(3-methoxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methoxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(3-trifluoromethylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-trifluoromethylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(4-trifluoromethylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(3-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-.(4-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)- N'-(2-pbenylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-( I-naphthyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2nitrophenyl)urea;N-(2-Hydroxy-4-nitrophenyl)-N'-(2-fluorophenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2,6-difluorophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-ethoxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-ethylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-trifluoromethoxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl) N'-(2-methylthiophenyl) urea N-(2-Hydroxy-4-nitrophenyl) N'-(2-chloro 6-methyl phenyl) urea; N-(2-Hydroxy-4-nitrophenyl) N'-(2-sulfoxymethyl phenyl) urea; N-(4-Trifluoromethyl-2-hydroxy phenyl) N'-(2-bromophenyl) urea; N-(4-Carbomnethoxy 2-hydroxy phenyl) N'-(2-bromophenyl) urea; N-(4-Trifluoromethyl-2-hydroxy phenyl) N'-(2-phenyl phenyl) urea; N-(4-Carbomethoxy 2-hydroxy phenyl) N'-(2-phenyl phenyl) urea; N-(2-Hydroxy-4-nitrophenyl) N'-(2,3-dichloro phenyl) urea;N-(2-Hydroxy-4nitrophenyl) N'-(2,4-dicbloro phenyl) urea; N-(2-Hydroxy-4-nitrophenyl) N'-(2-chloro phenyl) urea; N-(2-Hyclroxy-4-nitrophenyl) N'-(2,4-dibromo phenyl) urea; N-(2-Hydroxy- I -napthyl)-N'-(2-bromo phenyl) urea;N-(2-Hydroxy-4-nitrophenyl)-N'- (2,3-methylenedioxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl) N'-(3-chloro 2-methoxy phenyl) urea;N-(2-Hydroxy-4nitrophenyl) N'-(2-methyl phenyl) urea; N-[4-(Berizylamino)carbonyl-2-hydroxyphenyl]-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-phenoxy phenyl) urea; N-(2-Hydroxy-4-fluoro phenyl)-N'-(2-brorno phenyl) urea;N-(2-Hydroxy 3-napthyl) N'-(2-bromo phenyl) urea; N-(3,4-Difluoro 2-bydroxy phenyl) N'-(2-bromo phenyl) urea; N-(2-Hydroxy 4-phenyl phenyl) N'-(2-bromo phenyl) urea;N-(2-Hydroxy 4-methyl phenyl) N'-(2-bromo phenyl) urea; WO 00/76495 WOOO/6495PCT/USOOII6499 N-(2-Hydroxy-4-nitro phenyl) N'-(2-phenylarnino phenyl) urea; N-(2-Hydroxy 3-carboxyphenyl) N'-(2-bromo phenyl) urea N-(2-Sulfhydryl 4-bromo phenyl) N'-(2-bromo phenyl) urea;N-(2-Hydroxy 4-nitro phenyl) N'-(2-iodo phenyl) urea; N-(2-Hydroxy 4-nitro phenyl) N'-(2-bromo phenyl) thiourea;N-[(2-Phenylsulfamido) 4-cyanophenyll- N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonamido phenyl) phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl styryl) phenyl) N'-(2-bromo phenyl) urea;2-1(3,4 Dimethoxyphenylsulfonyl)amino] phenyl) N'-(2-bromo phenyl) urea; N-(2-[(4-Acetamidophenylsulfonyl)amino] phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl (2-thiophene) phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl (3-tolyl) phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl (8-quinolinyl)) phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amnino sulfonyl benzyl) phenyl) N'-(2-broino phenyl) urea; N-(2-Hydroxy-4-azidophenyl)-N'-(2-methoxyphenyl)urea; N-12-Hydroxy-5-cyanophenyl]-N'-[2-bromophenyl] urea; N-1j2-Hydroxy-3-fluorophenyl]-N'-[2-bromophenyl] urea; N-12-Hydroxy-3-fluoro-5-bromophenyl]-N'-[2-bromophenyl urea; N-[2-Hydroxy-3-chlorophenyl]-N'-12-bromophenyll urea;N-[2-Hydroxy-3trifluoromethylphenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-3,4-diphenyl-phenyl]-N'-[2-bromophenyl] urea; N-f 2-Hydroxy-3glycinemethylestercarhonylphenyll-N-[2-bromophenyl] urea; N-[2-hHydroxy-3-glycincarbonylphenyll-N-[2-bromophenyl] urea; N-[2-Hydroxy-3 ,5-dichlorophenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-3-nitrophenyl]-N '-[2-bromophenyl] urea;N-1i2-Hydroxy-3,4dichlorophenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-3-cyanophenyl]-N'-[2-bromophenyll urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2-bromophenyl] urea;N-[2-Hydroxy-4cyanophenyl]-N'-[4-methoxyphenyl] urea; N-I!2-Hydroxy-4-cyanophenyl]-N'-[2phenyiphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2-methylphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2-trifluoromethylphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[3-trifluoromethylphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[4-trifluoromethylphenyl] urea;N-[2-Hydroxy-3-npropylphenyl]-N'-[2-bromophenyl] urea; SN-j2-Hydroxy-4-ethylphenyl]-N-[2bromophenyll urea; N-[2-Hydroxy-3-phenylaminocarbonyl phenyl]-N'- [2-bromophenyl] urea; N-[2-Hydroxy-3-cyano-4-methylphenyl]-N'-[2-bromophenyl] urea;N-1i2-Hydroxy-4carbophenyl phenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-3-carbophenyl phenyll]-N'-[2-bromophenyl] urea;

I,

WO00176495 PCT/USOO/16499 N-[3-Benzyloxy-2-hydroxyphenyl]-N'-[2-bromophenylI urea; (E)-N-[4-112-(Methoxycarbonyl) ethenyl]-2-hydroxyphenyl]-N'-[2-bromophenyl] urea; [3-[2-(Methoxycarbonyl) ethenyl]-2-hydroxyphenyl]-N-[2-bromophenyl] urea- N'-[2-bromophenyl] urea; (E)-N-113-[2-(Aminocarbonyl) ethenyl]-2-hydroxyphenyll-N-12-bromophenyl] urea-N'- [2-bromophenyll urea; (E)-N-[4-[2-(Aniinocarbonyl) ethenyl]-2-hydroxyphenyll-N'-[2-bromophenyl]urea-N- 12-bromopheny1I urea; N-[2-Hydroxy-4-benzaniide phenyll-N'.{2-bromophenyll urea; N-[4-Aminocarbonyl-2-hydroxyphenyl]-N-[2-bromophenyl] urea; N-(2-Hydroxy-3,5,6-trifluorophenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-3-fluoro-4-trifluoromethylphenyl)-N-(2-bromophenyl)urea;N-(2- Hydroxy-3-iodophenyl)-N'-(2-bromophenyl)urea; N-[2-[[[2-(Trifluoromethyl)phenyllsulfonyllaminolphenyl-N-(2-bromophenyl)urea; N-(2-Bromophenyl)-N'-[2-dimethylaminosulfonylaminolphenyl]urea; N-[2-(Phenethylsulfonylamino)phenyl]-N '-(2-bromophenyl)urea; N-[2-[(2-Acetamido-4-methylthiazol-5-y)sulfonylaniinolphenyl]-N-(2bromophenyl)urea;N-[2-Hydroxy-4-cyanophenyl]-N'-[4-phenylphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2,3-dichlorophenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2-methoxyphenyl] urea; N-F2-Hydroxy-4-cyanophenyl]-N'-[3-methoxyphenyl] urea; N-[2-Hydroxy-5-fluorophenyl]-N'.-[2-bromophenyll urea; N-[2-Hydroxy-5-trifluoromethylphenyl]-N-[2-bromophenyl urea; N-[2-Hydroxyphenyl]-N'- [2-bromophenyl] urea;N-[Trans-3-styrl-2-hydroxyphenyl]-N- [2-bromophenyl] urea; N-[2-Hydroxy-3,4-dichlorophenyl]-N-[2-methoxyphenyl] urea; N-[2-Hydroxy-3,4-dichlorophenyl]-N-[4-methoxyphenyl] urea; N-[2-Hydroxy-3,4-dichlorophenyl]-N'-[3-trifluoromethylphenyl] urea; N-[2-Hydroxy-3,4-dichlorophenyl]-N-[2-phenylphenyl] urea;N-[2-Hydroxy-3,4dichloroph-enyl]-N'-[4-phenylphenyl] urea; N-[2-Hydroxy-3,4-dichlorophenyl]-N-[2,3-dichlorophenyl] urea; N-[2-Hydroxy-4-isopropylphenyll-N'-[3-trifluoromethylphenyl] urea;N-112-Hydroxy-3naphthyl]-N'-[2,3-dichlorophenyl] urea;N-[2-[(2,3-Dichlorothien-5yl)] sulfonylamiino]phenyl]-N'-(2-broniophenyl)urea;N-[2-[(3,5- Bistrifluoromethylphenyl)sulfonylaminolphenyl]-N-(2-bromophenyl)urea;N-[2-[(2- Benzyl)sulfonylamino]-(5-trifluoromethyl)phenyl-N-(2-bronophenyl)urea; N-[2-[2-(3-Nitrophenyl)sulfonylarnino]phenyll-N '-(2-bromophenyl)urea; N-[2-[2-(4-Phenoxyphenyl)sulfonylamino]phenyl]-N'-(2-bromophenyl) urea; iS)- 1 -Camphorsulfonylarminolphenyl]-N'-(2-bromophenyl)urea; WO OOn6495 WO 0076495PCTIUSOO/16499 iR)- 10-Camphorsulfonylaniino]phenyll-N'-.(2-bromophenyl)urea; N-[2-12-(2-Nitro-(4-trifluoromethyl)phenyl)sulfonylamiinolpheny-N-(2bromophenyl)urea; N-(2-Hydroxy-4-azidophenyl)-N'-(2-iodophenyl)urea;N-(2-Hydroxy-3-azidophenyl)- N'-(2-bromophenyl)urea;N-[2-Hydroxy-3-cyanophenyl-N-[2-methoxyphenyll urea;N- [2-Hydroxy-3-cyanophenyl]-N'-[3-trifluoromethylphenyl] urea; N-[2-Hydroxy-3-cyanophenyll-N-12-phenylphenyll urea; N-[2-Hydroxy-3-cyanophenyl]-N'-[2,3-dichlorophenyll urea; N-[2-Hydroxy-4-isopropylphenyl]-N'-[2,3-dichlorophenylI urea; N-[2-Hydroxy-4-isopropylphenyll-N'-[2-chfloro-5-trifluoromethylphenyl urea; N-[2-Hydroxy-3-phenylphenyl]-N'-[2,3-dichlorophenyll nitrophenyl] -N'-[2-methoxyphenyl] urea;N-12-Hydroxy-5-nitrophenylil-N'-[3trifluoromethyiphenyl] urea;N-[2-Hydroxy-5-nitrophenyl]-N'-[2-phenylphenyl] urea; N-[2-Hydroxy-5-nitrophenyl]-N'-[2,3-dichlorophenyll ethylsulfonylphenyl]-N'-[2,3-dichlorophenylI urea;N-I[2-(2-Amino-(4-trifluoromethyl) phenyl) sulfonylamino] phenyl]- N'-(2-bromophenyl)urea;N-[2-(Aminosulfonyl phenyl) 3-amino phenyl] N'-(2-bromo phenyl) urea;N- [2-Hydroxy-3,4-dichlorophenyl]-N-[2,4 dimethoxyphenyl] urea; N-[2-Hydroxy-3 ,4-dichlorophenyl]-N'-112-chloro-5-trifluoromethylphenyl] urea; N-[2-Hydroxy-3-naphthyl]-N'-[3-trifluoromethylphenyl] urea; acid]-N'-[2-bromophenyll urea; N-12-Hydroxy-4-naphthalenesulfonic acid] -N'-[2-bromophenyl] urea; 1, 1 '-(4-Methyl-2-phenylene)bis[2-thio-3-3-tolylurea] N-(2-Carboxyphenyl)-N'-phenylurea; N-(2-Hydroxy-4-nitrophenyl)-N'-phenylurea; I -(2-Carboxyphenyl)-3-(4-chlorophenyl)urea 2-(3 ,4-Dichlorophenylcarhonyldiimino)-5-trifluoromethylbenzoic acid; 2-(4-Chlorophenylcarbonyldiimino)-5-trifluoromethylbenzoic acid; 1 -(p-Anisyl)-3-(2-carboxyphenyl)urea; 1 -(2-Carboxyphenyl)-3-(3-fluorophenyl)urea; I -(2-Carboxyphenyl)-3-(3-chlorophenyl)urea; 1-(m-Anisyl)-3-(2-carboxyphneyl)urea; 1 -(o-Anisyl)-3-(2-carboxyphenyl)urea 1 arboxyphenyl)-3-(3 ,4-dichlorophenyl)urea; 1 -(2-Carboxyphenyl)-3-(2,4-dichlorophenyl)urea; N-(5-Chloro-2-hydroxy-4-nitrophenyl)-N-phenylurea; and N-(2-Hydroxy-4-nitrophenyl)-N'-(4-nitrophenyl)urea. Preferred compounds of Formula include: N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methoxyphenyl)urea; -1I1I-

C.

WO 00/76495 PCT/USOO/1 6499 N-(2-Hydroxy-4-nitrophenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-phenylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methylthiophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2,3-dichlorophenyl)urea; N-(2-hydroxy 4-nitro phenyl) N'-(2-chloro phenyl) urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2,3-methylenedioxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methoxy-3-chlorophenyl)urea; N-(2-hydroxy 4-nitro phenyl) N'-(2-phenyloxy phenyl) urea; N-(3-Chloro-2-hydroxyphenyl)-N'-(bromophenyl)urea; N-(2-Hydroxy-3-glycinemethylestercarbonylphenyl)-N '-(2-bromophenyl)urea; N-(3-Nitro-2-hydroxyphenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-cyanophenyl)-N-(2-bromophenyl)urea; N-(2-Hydroxy-3,4-dichlorophenyl)-N'-(2-bromophenyl)urea; N-(3-Cyano-2-bydroxyphenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-cyanophenyl)-N'-(2-methoxyphenyl)urea; N-(2-Hydroxy-4-cyanophenyl)-N'-(2-phenylphenyl)urea; N-(2-Hydroxy-4-cyanophenyl-N'-(2,3-dichlorophenyl)urea; N-(2-Hydroxy-4-cyanophenyl)-N-(2-methylphenyl)urea; N-(2-Hydroxy-3-cyano-4-methylphenyl)-N'-(2-bromophenyl)urea; N-(4-Cyano-2-hydroxyphenyl)-N'-(2-trifluoromethylphenyl)urea; N-(3-Trifluoromethyl-2-hydroxyphenyl)-N'-(2-bromophenyl)urea; N-(3-Phenylamrinocarbonyl-2-hydroxyphenyl)-N-(2-bromophenyl)urea; N-(2-hydroxy 4-nitro phenyl) N'-(2-iodo phenyl) urea; N-(2-hydroxy 4-nitro phenyl) N'(2-bromo phenyl) thiourea; N-(2-phenylsulfonamido)-4-cyanophenyl-N(2-bromo phenyl)urea; (E)-N-[3-[(2-Aminocarbonyl)ethenyl]-2-hydroxypfienyl]-N'-(2-bromophenyl)urea; N-(2-Hydroxy,3,4-dichlorophenyl)-N'-(2-methoxyphenyl)urea; N-(2-Hydroxy,3,4-dichlorophenyl)-N-(2-phenylphenyl)urea; N-(2-Hydroxy-3,4-dichlorophenyl)-N'-(2,3-dichlorophenyl)urea; N-(2-Hydroxy-5-nitrophenyl)-N'-(2,3-dichlorophenyl)urea; and N-(2-Hydroxy-3-cyanophenyl)-N'-(2,3 dicblorophenyl)urea.

As used herein, "optionally substituted" unless specifically defined shall mean such groups as halogen, such as fluorine, chlorine, bromine or iodine; hydroxy; hydroxy substituted Cl- ioalkyl; Ci1- 1O alkoxy, such as methoxy or ethoxy; S(O)m' CI- 10 alkyl, wherein m' is 0, 1 or 2, such as methyl thia, methyl sulfinyl or methyl sulfonyl; amino, mono di-substituted amino, such as in the NR4R5 group; NHC(O)R4; C(O)NR4R5; C(O)OH; S(O)2NR4RS; NHS(O)2R1 3, C I-l1O alkyl, such as methyl, ethyl, propyl, isopropyl, or t-butyl; halosubstituted C I -10 alkyl, such CF3; an optionally substituted aryl, such as phenyl, or an optionally substituted arylalkyl, such -12- WO 00/76495 PCT/USOO/16499 as benzyl or phenethyl, optionally substituted heterocylic, optionally substituted heterocylicalkyl, optionally substituted heteroaryl, optionally substituted heteroaryl alkyl, wherein these aryl hetroaryl, or heterocyclic moieties may be substituted one to two times by halogen; hydroxy; hydroxy substituted alkyl; CI-10 alkoxy; alkyl; amino, mono di-substituted amino, such as in the NR4R5 group; CI-10 alkyl, or halosubstituted C1-10 alkyl, such as CF3.

R13 is suitably C1-4 alkyl, aryl, aryl C1-4alkyl, heteroaryl, heteroarylC -4alkyl, heterocyclic, or heterocyclicC 1-4alkyl.

Another aspect of the present invention are the novel compounds of Formula or a pharmaceutically acceptable salt thereof, as described below, which are also useful in inhibiting the binding of IL-8 to its receptors in a mammal in need thereof.

This invention also relates to the pharmaceutical compositions comprising a compound of Formula (II) and a pharmaceutically acceptable diluent or carrier. Compounds of Formula (II) are also useful for treating a chemokine mediated disease, wherein the chemokine is one which binds to an IL-8 oc or P receptor and which method comprises administering an effective amount of a compound of Formula (II) or a pharmaceutically acceptable salt thereof. Compounds of Formula (II) are represented by the structure: X R R)m

(II)

wherein X is oxygen or sulfur; R is any functional moiety having an ionizable hydrogen and a pKa of 10 or less; R1 is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted alkyl; C1-10 alkyl; C2-10 alkenyl; C1-10 alkoxy; halosubstituted C1-10 alkoxy; azide; S(0)tR4; hydroxy; hydroxyCl-4alkyl; aryl; aryl C1-4 alkyl; aryloxy; arylC1-4 alkyloxy; heteroaryl; heteroarylalkyl; heterocyclic, heterocyclicC1 -4alkyl; heteroarylC1-4 alkyloxy; aryl C2-10 alkenyl; heteroaryl C2-10 alkenyl; heterocyclicC2-10 alkenyl; NR4R5; C2-10 alkenyl C(0)NR4R5; C(0)NR4R5; C(0)NR4RIO; S(0)3H; S(0)3R8; CI-10 alkyl C(O)RI 1; C2-10 alkenyl C(O)Ri1; C2-10 alkenyl C(O)OR 1; C(O)R 1; C(O)ORI2; OC(O) R11; NR4C(0)R11; or two R1 moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; t is 0, or an integer having a value of I or 2; s is an integer having a value of 1 to 3; R4 and R5 are independently hydrogen, optionally substituted C1-4 alkyl, optionally substituted aryl, optionally substituted aryl C -4alkyl, optionally substituted -13 WO 00/76495 PCT/US00/16499 heteroaryl, optionally substituted heteroaryl C -4alkyl, heterocyclic, heterocyclicC 1-4 alkyl, or R4 and R5 together with the nitrogen to which they are attached form a 5 to 7 member ring which may optionally comprise an additional heteroatom selected from O/N/S; Y is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted alkyl; CI-10 alkyl; C2-10 alkenyl; CI-10 alkoxy; halosubstituted alkoxy; azide; S(O)tR4; hydroxy; hydroxy C1-4alkyl; aryl; aryl C1-4 alkyl; aryloxy; aryl C1-4 alkyloxy; heteroaryl; heteroarylalkyl; heteroarylC1-4 alkyloxy; heterocyclic, heterocyclic C1-4alkyl; aryl C2-10 alkenyl; heteroaryl C2-10 alkenyl; heterocyclic C2-10 alkenyl; NR4R5; C2-10 alkenyl C(O)NR4R5; C(O)NR4R10; S(0)3H; S(0)3R8; C1-10 alkyl C(O)R11; C2-10 alkenyl C(O)R11; C2-10 alkenyl C(O)OR 1; C(O)RI 1; C(O)OR12; OC(O) R11; NR4C(O)R11; or two Y moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; n is an integer having a value of 1 to 3; m is an integer having a value of 1 to 3; R8 is hydrogen or C 1-4 alkyl; is C1-10 alkyl C(0)2R8; R11 is hydrogen, Cl-4 alkyl, optionally substituted aryl, optionally substituted aryl Cl-4alkyl, optionally substituted heteroaryl, optionally substituted heteroarylC1-4 alkyl, optionally substituted heterocyclic, or optionally substituted heterocyclicC1-4 alkyl; R12 is hydrogen, CI-10 alkyl, optionally substituted aryl or optionally substituted arylalkyl; E is optionally selected from 0 R1 0 t "1 or8 the asterix denoting point of attachment of the ring, with at least one E being present; or a pharmaceutically acceptably salt thereof.

Suitably, the variables for Formula such as X, R, RI, R4, R5, R6, R7, Rg, R9, Y, Ra, Rb, Rc, n, m, and s terms, etc. are as defined in Formula above. The E ring denoted by its point of attachment through the asterix may optionally be present. If it is not present the ring is a phenyl moiety which is substituted by the R and R1 terms as shown. At least one E ring is necessary. The E ring may be substituted by -14- S WO 00/76495 PCT/US00/16499 the RI moiety in any ring, saturated or unsaturated, and is shown for purposes herein substituted only in the unsaturated ring(s).

Exemplified compounds of Formula (II) are: N-[2-hydroxy-5-indanone]-N'-[2-bromophenyl] urea; N-[l-hydroxyfluorene]-N'-[2-bromophenyl] urea; N-[3-hydroxy-9,10-anthraquinon-2-yl]-N'-[2-bromophenyl] urea Another aspect of the present invention are the novel compounds of Formula or a pharmaceutically acceptable salt thereof, as described below, which are also useful in inhibiting the binding of IL-8 to its receptors in a mammal in need thereof. This invention also relates to the pharmaceutical compositions comprising a compound of Formula (HI) and a pharmaceutically acceptable diluent or carrier. Compounds of Formula (1I) are also useful for treating a chemokine mediated disease, wherein the chemokine is one which binds to an IL-8 ao or P receptor and which method comprises administering an effective amount of a compound of Formula (III) or a pharmaceutically acceptable salt thereof. Compounds of Formula (III) are represented by the formula: 1 )m N H H

(II)

wherein X is oxygen or sulfur; R is any functional moiety having an ionizable hydrogen and a pKa of 10 or less; RI is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted alkyl; C1-10 alkyl; C2-10 alkenyl; CI-10 alkoxy; halosubstituted alkoxy; azide; S(O)tR4; hydroxy; hydroxyC1-4alkyl; aryl; aryl C1-4 alkyl; aryloxy; arylC1-4 alkyloxy; heteroaryl; heteroarylalkyl; heterocyclic, heterocyclicC -4alkyl; heteroarylC1-4 alkyloxy; aryl C2-10 alkenyl; heteroaryl C2-10 alkenyl; heterocyclicC2-10 alkenyl; NR4R5; C2-10 alkenyl C(O)NR4R5; C(O)NR4RIO; S(0)3H; S(O)3R8; CI-10 alkyl C(O)R11; C2-10 alkenyl C(O)R11; C2-10 alkenyl C(O)ORI C(O)R 1 1 C(O)OR12; OC(O) Rll; NR4C(O)R11; or two R1 moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; t is 0, or an integer having a value of I or 2; s is an integer having a value of 1 to 3; R4 and R5 are independently hydrogen, optionally substituted C1-4 alkyl, optionally substituted aryl, optionally substituted aryl C1-4alkyl, optionally substituted heteroaryl, optionally substituted heteroaryl C1-4alkyl, heterocyclic, heterocyclicC1-4 alkyl, or R4 and R5 together with the nitrogen to which they are ~~wo 00/6495 PTUO/69 PCT/USOO/16499 attached form a 5 to 7 member ring which may optionally comprise an additional heteroatom selected from OINIS; Y is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted alkyl; CI-10 alkyl; C2-10 alkenyl; CI-10 alkoxy; halosubstituted alkoxy; azide; S(Q)tR4; hydroxy; hydroxyCl-4alkyl; aryl; aryl Cl.4 alkyl; aryloxy; arylC 1 4 alkyloxy; heteroaryl; heteroarylalkyl; heteroarylCl..4 alkyloxy; heterocyclic, heterocyclicCI-4alkyl; aryl C2-10 alkenyl; heteroaryl C2-10O alkenyl; heterocyclicC2.10 alkenyl; NR4R5; C2-10 alkenyl C(O)NR4R5; C(O)NR4RlO; S(O)3H; S(O)3R8; Ci...i alkyl C(O)RI 1; C 2 -10 alkenyl C(O)RI 1; C2- 10alkeny1 C(O)OR 11; C(O)Rii1; C(O)0R 12; OC(O) R 1; NR4C(O)R 11; or two Y moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; n is an integer having a value of 1 to 3; mn is an integer having a value of 1 to 3; R8 is hydrogen or Ci1A- alkyl; Rio is CI-10 alkyl C(O)2R8; Ri1 is hydrogen, C 1-4 alkyl, optionally substituted aryl, optionally substituted aryl C IA-alkyl, optionally substituted heteroaryl, optionally substituted heteroarylC 1- 4alkyl, optionally substituted heterocyclic, or optionally substituted heterocyclicC 1- 4alkyl; R12 is hydrogen, Ci-10 alkyl, optionally substituted aryl or optionally substituted arylalkyl; or a pharmaceutically acceptably salt thereof.

Suitably, the variables, etc. for Formula (11) are the same as those defined for Formula above, such as for example the R variable.

Exemplified compounds of Formula (M11) are N-(2-Hydroxy-4-nitrophenyl)-N'- (3-methoxy-2-thienyl)urea and N-(2-hydroxy-5-nitrophenyl)-N-(3-methoxy-2thienyl)urea.

Another aspect of the present invention is the novel compounds of Formula (Ia), a subset of compounds of Formula useful for treating a chemokine mediated disease as defined herein. This invention also relates to the pharmaceutical compositions comprising a compound of Formula (Ia) and a pharmaceutically acceptable diluent or carrier. The compounds of Formula (1a) are represented by the structure: NHS(O)

AR

n(Y) 1 &AN 9-d 1,N H H (1a) wherein -16- WO 00/76495 WO 0076495PCr/USOO/16499 X is oxygen or sulfur; Ra is an alkyl, aryl, arylC I 4alky1, heteroaryl, heteroaryl ClI 4akyl, heterocyclic, or a heterocyclic CI -4alkyl moiety, all of which may be optionally substituted; Rb is a NR6R7, aikyl, aryl, arylC I 4alkyI, aryl C2A4alkenyI, heteroaryl, heteroarylCl..4alkyl, heteroarylC2-4 alkenyl, heterocyclic, or heterocyclic Ci 14alkyl, or a heterocyclic C2-4alkenyl moiety, camphor, all of which may be optionally substituted one to three times independently by halogen; nitro; halosubstituted C 1 4 alkyl; C 1 alkyl; Cl1-4 alkoxy; NR9C(O)Ra; C(O)NR6R7, S(O)3H, or C(O)0CI- 4 alkyl; R6 and R7 are independently hydrogen or a CI-4 alkyl group, or R6 and R7 together with the nitrogen to which they are attached form a 5 to 7 member ring which ring may optionally contain an additional heteroatom which heteroatom is selected from oxygen, nitrogen or sulfur, which ring may be optionally substituted; R9 is hydrogen or a C 1 4 alkyl, preferably hydrogen; RI is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted Ci1- 10 alkyl; C1I.-l0 alkyl; C2- 10 alkenyl; C I -Io alkoxy; hal osubstituted C I.- 10 alkoxy; azide; S (O)tR4; hydroxy; hydroxy Cl14alkyl; aryl; aryl Cl14 alkyl; aryloxy; aryl CI-4 alkyloxy; heteroaryl; heteroarylalkyl; heterocyclic, heterocyclic C I 4alkyl; heteroaryl CI-4 alkyloxy; aryl C2-10 alkenyl; heteroaryl C2-10 alkenyl; heterocyclicC2-10 alkenyl; NR4R5; C2-.10 alkenyl C(O)NRzIR5; C(O)NR4RiO; S(O)3H; S(0)3R8; CI-10 alkyl C(O)Rii1; C2-10 alkenyl C(O)RI 1; C2-10 alkenyl C(O)ORii1; C(O)Rii1; C(O)0R12; OC(O) Rl NR4C(O)Rl1; or two R 1 moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; t is 0, or an integer having a value of I or 2; s is an integer having a value of I to 3; R4 and R5 are independently hydrogen, optionally substituted Ci1A- alkyl, optionally substituted aryl, optionally substituted aryl C 1-4alkyl, optionally substituted heteroaryl, optionally substituted heteroaryl Cl -4alkyl, heterocyclic, heterocyclicC 1-4 alkyl, or R4 and R5 together with the nitrogen to which they are attached form a 5 to 7 member ring which may optionally comprise an additional heteroatom selected from OIN/S; Y is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted C Ii-1 alkyl; C I -1o alkyl; C2-10 alkenyl; C I.-10 alkoxy; halosubstituted C I -1 alkoxy; azide; S(Q)tR4; hydroxy; hydroxyCl-4alkyl; aryl; aryl ClA4 alkyl; aryloxy; arylC 1-4 alkyloxy; heteroaryl; heteroarylalkyl; heteroarylC 1-4 alkyloxy; heterocyclic, heterocyclicC I 4alkyi; aryl C2- 10 alkenyl; heteroaryl C2-l10 alkenyl; heterocyclicC2- 10 alkenyl; NR4R5; C2- 1O alkenyl C(O)NR4R5; C(O)NR4R1O; S(O)3H; S(O)3R8; CI-1iO alkyl C(O)RII; C2..lo alkenyl C(Q)RIi1; 17 WO 00/76495 PCT/US00/16499 C2-10 alkenyl C(O)OR11; C(O)R 1; C(O)OR12; OC(O) RI i; NR4C(O)R 11; or two Y moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; n is an integer having a value of 1 to 3; m is an integer having a value of 1 to 3; R8 is hydrogen or C1-4 alkyl; is Ci-10 alkyl C(0)2R8; RI 1 is hydrogen, C1-4 alkyl, optionally substituted aryl, optionally substituted aryl C1-4alkyl, optionally substituted heteroaryl, optionally substituted heteroarylC1- 4alkyl, optionally substituted heterocyclic, or optionally substituted heterocyclicC1- 4alkyl; R12 is hydrogen, CI-10 alkyl, optionally substituted aryl or optionally substituted arylalkyl; or a pharmaceutically acceptably salt thereof.

A preferred ring substitution for R1 variable is monosubstituted in the 3position, or the 4- position, or di-substituted in the 3,4- position. The substituent group is suitably an electron withdrawing moiety. Preferably RI is nitro, halogen, cyano, trifluoromethyl group, or While Y may be substituted in any of the 5 ring positions, preferably the ring with the Y moiety is mono-substituted in the 2-position or 3- position, with the 4preferably being unsubstituted. If the ring is di-substituted, substituents are preferably in the positions of a monocyclic ring. While both R1 and Y can both be hydrogen, it is preferred that at least one of the rings be substituted, preferably both rings are at least mono-substituted, i.e. n amd m are each equal to 1 or more.

Y is more preferably a mono-substituted halogen, disubstituted halogen, monosubstituted alkoxy, disubstituted alkoxy, methylenedioxy, aryl, or alkyl, preferably these groups are substituted in the position or 2'-,3'-position.

Exemplified compounds of Formula (Ia) are: N-(4-Nitro 2-(phenylsulfonylamino)phenyl)-N'-phenyl urea; N-[(2-Phenylsulfamido) 4-cyanophenyl]- N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonamido phenyl) phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl styryl) phenyl) N'-(2-bromo phenyl) urea; Di-methoxyphenylsulfonyl)amino] phenyl) N'-(2-bromo phenyl) urea; N-(2-[(4-Acetamidophenylsulfonyl)amino] phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl (2-thiophene) phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl (3-tolyl) phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl (8-quinolinyl)) phenyl) N'-(2-bromo phenyl) urea; N-(2-(Amino sulfonyl benzyl) phenyl) N'-(2-bromo phenyl) urea; -18wo oon6495 WO 0076495PCT/USOO/16499 N-[2-[[[2-(Trifluoromethyl)phenyllsulfonyl]aminojphenyl]-N'-(2-bromophenyl)urea; N-(2-Bromophenyl)-N-112-dimethylaminosulfonylaminolphenylluea; N-[2-(Phenethylsulfonylamino)phenyl]-N'-(2-bromophenyl)urea; N-[2-[(2-Acetamnido-4-methylthiazol-5-yI)sulfonylaminolphenyll-N-(2bromophenyl)urea; N-[2-[(2,3-Dichlorothien-5-yl)]sulfonylaniino]phenyl]-N-(2-bronophenyl)urea;N-[2- [(3,5-Bistrifluoromethylphenyl)sulfonylamino]phenyl]-N-(2-bromophenyl)urea;N-[2- [(2-Benzyl)sulfonylamino]-(5-trifluoromethyl)phenyl]-N-(2-bromophenyl)urea;N-[2- [2-(3-Nitrophenyl)sulfonylaminojphenyl]-N'-(2-bromophenyl)urea; N-[2-[2-(4-Phenoxyphenyl)sulfonylaminolphenyl]-N'-(2-bromophenyl) urea; IS)- 1O-Camphorsulfonylaminolphenyl]-N'-(2-bromophenyl)urea; N-112-( IR)- lO-Camphorsulfonylarninolphenyl]-N'-(2-bromophenyl)urea; N-12-[2-(2-Nitro-(4-trifluoromethyl)phenyl)sulfonylamino]phenyl-N-(2bromophenyl)urea;N-[2-(2-Amino-(4-trifluoromethyl) phenyl) sulfonylaminol phenyl]- N' -(2-bromophenyl)urea; N-[2-(aminosulfonyl phenyl) 3-amino phenyl] N'-(2-bromo phenyl) urea. Another aspect of the present invention is the novel compounds of Formula a subset of compounds of Formula useful for treating a chemokine mediated disease. This invention also relates to the pharmaceutical compositions comprising a compound of Formula (Tb) and a pharmaceutically acceptable diluent or carrier. The compounds of Formula (Tb) are represented by the structure:

X

1

R

2 n(Y) X R)m a HH (Tb) wherein X is oxygen or sulfur; XlI is oxygen or sulfur; RI is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted alkyl; CI-10 alkyl; C2-10 alkenyl; CI-10 alkoxy; halosubstituted alkoxy; azide; S (O)tR4; hydroxy; hydroxyC 14alkyl; aryl; aryl CI1A- ailkyl; aryloxy; arylC 1 4 alkyloxy; heteroaryl; heteroarylalkyl; heterocyclic, heterocyclic C I 4alkYl; heteroaryl C1-4 alkyloxy; aryl C 2 -1iO alke nyl; heteroaryl C2- 0 alkenyl; heterocyclicC2-10 alkenyl; NR4R5; C2-10 alkenyl C(O)NR4R5; C(O)NR4RIO; S(O)3H; S(O)3R8; Cl-1b alkyl C(O)RIi1; C2-10o alkenyl C(Q)RIl1; C2-10 alkenyl C(O)ORIi1; C(O)Rii1; C(O)0R12; OC(O) R~I1; NR4C(O)RI 1; or two R I moieties together may form 0-(CH2)s0- or a 5 to 6 membered unsaturated ring; -19- S WO 00/76495 PCT/US00/16499 t is 0, or an integer having a value of 1 or 2; s is an integer having a value of 1 to 3; R2 is a substituted aryl, heteroaryl, or heterocyclic ring which ring has a functional moiety providing the ionizable hydrogen having a pKa of 10 or less; R4 and R5 are independently hydrogen, optionally substituted C1-4 alkyl, optionally substituted aryl, optionally substituted aryl C -4alkyl, optionally substituted heteroaryl, optionally substituted heteroaryl Ci-4alkyl, heterocyclic, heterocyclicC 1-4 alkyl, or R4 and R5 together with the nitrogen to which they are attached form a 5 to 7 member ring which may optionally comprise an additional heteroatom selected from O/N/S; Y is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted alkyl; CI-10 alkyl; C2-10 alkenyl; CI-10 alkoxy; halosubstituted alkoxy; azide; S(O)tR4; hydroxy; hydroxyC1-4alkyl; aryl; aryl C1-4 alkyl; aryloxy; arylCi-4 alkyloxy; heteroaryl; heteroarylalkyl; heteroarylC1-4 alkyloxy; heterocyclic, heterocyclicCI-4alkyl; aryl C2-10 alkenyl; heteroaryl C2-10 alkenyl; heterocyclicC2-10 alkenyl; NR4R5; C2-10 alkenyl C(O)NR4R5; C(O)NR4RIO; S(0)3H; S(0)3Rg; CI-10 alkyl C(O)R11; C2-10 alkenyl C(O)R 1; C2-10 alkenyl C(O)OR 1; C(O)R11; C(O)OR12; OC(O) R11; NR4C(O)RI1; or two Y moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; n is an integer having a value of 1 to 3; m is an integer having a value of 1 to 3; R8 is hydrogen or C1-4 alkyl; is CI-10 alkyl C(0)2Rg; R11 is hydrogen, CI-4 alkyl, optionally substituted aryl, optionally substituted aryl Cl-4alkyl, optionally substituted heteroaryl, optionally substituted heteroarylC1- 4alkyl, optionally substituted heterocyclic, or optionally substituted heterocyclicC1- 4alkyl; R12 is hydrogen, CI-10 alkyl, optionally substituted aryl or optionally substituted arylalkyl; or a pharmaceutically acceptable salt thereof.

Suitably, the variable, etc. for Formula (Ib) are the same as those defined for Formula above, such as for example the functional moieties on the R2 group having an ionizable hydrogen with a pKa of 10 or less. Suitably such functional groups include, but are not limited to, hydroxy, carboxylic acid, thiol, -NH-C(O)Ra, C(O)NR6R7, substituted sulfonamides of the formula -NHS(0)2Rb, -S(0)2NHRc, NHC(X2)NHRb, or tetrazoyl (as defined for Formula Suitably for compounds of Formula a preferred ring substitution for R1 is in the 3-position, the 4- position or is preferably di substituted in the 3,4- position. The WO 00/76495 PCT/US00/16499 substituent group is suitably an electron withdrawing moiety. Preferably R1 is nitro, halogen, cyano, trifluoromethyl group, or While Y may be substituted in any of the 5 ring positions, preferably the ring with the Y moiety is mono-substituted in the 2-position or 3- position, with the 4preferably being unsubstituted. If the ring is disubstituted, substituents are preferably in the 2' or 3'position of a monocyclic ring. While both R1 and Y can both be hydrogen, it is preferred that at least one of the rings be substituted, preferably both rings are at least mono-substituted, i.e. n amd m are each equal to 1 or more.

Suitably for compounds of Formula Y is more preferably disubstituted halogen, mono-substituted halogen, disubstituted alkoxy, mono-substituted alkoxy, methylenedioxy, aryl, or alkyl, preferably in the 2'position or 2',3'-position.

Another aspect of the present invention is the novel compounds of Formula (Ic), a subset of compounds of Formula useful for treating a chemokine mediated disease.

This invention also relates to the pharmaceutical compositions comprising a compound of Formula (Ic) and a pharmaceutically acceptable diluent or carrier. The compounds of Formula (Ic) are represented by the structure:

X

1

H

n(Y) X R 1 )m H H (Ic) wherein X is oxygen or sulfur; X1 is oxygen or sulfur; R1 is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted alkyl; C1-10 alkyl; C2-10 alkenyl; CI-10 alkoxy; halosubstituted alkoxy; azide; S(O)tR4; hydroxy; hydroxyC -4alkyl; aryl; aryl C1-4 alkyl; aryloxy; aryl C1-4 alkyloxy; heteroaryl; heteroarylalkyl; heterocyclic, heterocyclicCl- 4alkyl; heteroarylC1-4 alkyloxy; aryl C2-10 alkenyl; heteroaryl C2-10 alkenyl; heterocyclic C2-10 alkenyl; NR4R5; C2-10 alkenyl C(O)NR4R5; C(O)NR4RIO; S(O)3H; S(O)3R8; Cl-10 alkyl C(O)R11; C2-10 alkenyl C(O)R11; C2-10 alkenyl C(O)OR 1; C(O)R11; C(O)OR12; OC(O) R 1; NR4C(O)R11; or two R1 moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; t is 0, or an integer having a value of 1 or 2; s is an integer having a value of 1 to 3; R4 and R5 are independently hydrogen, optionally substituted C1-4 alkyl, optionally substituted aryl, optionally substituted aryl C1-4alkyl, optionally substituted heteroaryl, optionally substituted heteroaryl C 1-4 alkyl, heterocyclic, heterocyclic -21- U/n nnp7"GC ThIr-rfrTennil ICA C 1 -4 alkyl, or R4 and R5 together with the nitrogen to which they are attached form a 5 to 7 member ring which may optionally comprise an additional heteroatom selected from O/NIS; Y is independently selected from halogen; nitro; cyano; halosubstituted ClI 0 alkyl; CI-i0 alkyl; C2-10 alkenyl; CvIo alkoxy; halosubstituted Cl-1o alkoxy; azide; S(O)tR4; hydroxy; hyciroxy ClI 4alkyl; aryl; aryl Cl..-4 alkyl; aryloxy; arylC 1 -4 alkyloxy; heteroaryl; heteroarylalkyl; heteroaryiC 1.4 alkyloxy; heterocyclic, heterocyclic C I..4alkyl; aryl C2- 1O alkenyl; heteroaryl C2- 10 alkenyl; heterocyclic C2-10 alkenyl; NR4R5; C2-10 alkenyl C(O)NR4R5; C(O)NR4R5; C(O)NR4R S(O)3H; S(O)3R8; CI-.10 alkyl C(O)RI 1; C2-1l0 alkenyl C(O)Rll1; C2-10 alkenyl C(O)ORIi1; C(O)Rll1; C(O)QRl2; OC(O) RI 1 NR4C(Q)Rl 1; or two Y moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; n is an integer having a value of 1 to 3; m is an integer having a value of 1 to 3; R8 is hydrogen or Cl1-4 alkyl; R 10 is C I -l1 alkyl C(O)2R8; R 11 is hydrogen, C1.4 alkyl, optionally substituted aryl, optionally substituted aryl Ci Aalkyl, optionally substituted heteroaryl, optionally substituted heteroarylClI- 4alkyl, optionally substituted heterocyclic, or optionally substituted heterocyclicC I.

4alkyl; R 12 is hydrogen, C 1 -1I0 alkyl, optionally substituted aryl or optionally substituted arylalkyl; provided that when n =1 than Y is substituted in the 2- or 3- position; when n =2 than Y is di-substituted in the position, the position, the 2'-6'position, the 3' or the 3'-6'position; when b 3 than Y is trisubstituted in the 2' or the positions; further provided that when X I is 0, m=2, R I is 2-t-butyl, 4-methyl, and n=3 than Y is not 2 '-OH,3 butyl, when Xi1 is 0, m=l1, R I is 4-methyl, and n=2 than Y is not 2'-OH, 5 '-methyl; when Xi is 0, rn=l, Rl is hydrogen, and n=2 than Y is not 2'-6'-diethyl; when Xi is 0, m=l, Rl is 6-OH, and n=2 than Y is not when Xl is S, RI is 4-ethyl, and n=1 than Y is not 2-methoxy; or a pharmaceutically acceptably salt thereof.

Suitably, the variables, etc. for Formula (1c) are the same as those defined for Formula above unless indicated..

Suitably for compounds of Formula a preferred ring substitution for R I is in the 3-position, the 4- position or di substituted in the 3,4- position. Preferably RI is 22 WO 00/76495 PCT/USOO/1 6499 other thani hydrogen. The substituent group is suitably an electron withdrawing moiety.

Preferably RI is nitro, halogen, cyano, trifluoromethyl group, or While Y may be suibstituted in any of the 5 ring positions, preferably the ring with the Y moiety is mono-substituted in the 2-position or 3- position, with the 4preferably being unsubstituted. If the ring is disubstituted, substituents are preferably in the 2' or 3'position of a monocyclic ring. While both RI and Y can both be hydrogen, it is preferred that at least one of the rings be substituted, preferably both rings are at least mono-substituted, i.e. n amd m are each equal to I or more.

Suitably for compounds of Formula Y is more preferably a monosubstituted halogen, disubstituted halogen, mono-substituted alkoxy, disubstituted alkoxy, methylenedioxy, aryl, or alkyl, preferably with these groups in the 2'position or 2,3-position.

Exemplified compounds of Formula (1c) are: N-[2-Hydroxy-4-(methoxycarbonyl)phenyl]-N'zphenylurea; N-[2-Hydroxy-5-nitro-phenyl]-N'-phenyl urea N-(2-Hydroxy-4-fluorophenyl)-N'-phenyl urea; N-[2-Hydroxy--4-(trifluoromethyl)phenyl]-N-pheny urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-hydroxy-4-nitrophenyl) urea; N-(2-Hydroxy-4-nitrophenyl)-N'-phenyl-thiourea; N-(2-Hydroxy-5-nitrophenyl)-N'-(3-methoxy-2-thienyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(3-methoxy-2-thienyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(3-methoxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methoxyphenyl)urea; N-(2-Hydroxy-4nitrophenyl)-N'-(3-trifluoromethylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-trifluoromethylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(4-trifluoromethylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(3-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N -(4-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-phenylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-nitrophenyl)urea;N-(2-Hydroxy-4-nitrophenyl)-N'..

(2-fluorophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2,6-difluorophenyl)urea;N-(2-Hydroxy-4 nitrophenyl)-N'-(2-ethoxyphenyl)urea; N-(2-Hydroxy-4--nitrophenyl)-N -(2-ethylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N -(2-trifluoromethoxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl) N -(2-methylthiophenyl) urea; N-(2-Hydroxy-4-nitro-phenyl) N'-(2-chloro 6-methyl phenyl) urea; -23 WO 00/76495 WO 0076495PCTIUSOO/1 6499 N-(2-Hydroxy-4-nitro-phenyl) N'-(2-sulfoxymethyl phenyl) urea;N-(2-Hydroxy-4trifluoromethyl phenyl)-N'-(2-bromo phenyl) urea; N-(2-Hydroxy-4-trifluoromethyl phenyl)-N'-(2-phenyl phenyl) urea; N-(2-Hydroxy-4-carbomethoxy phenyl)-N'-(2-phenyl phenyl) urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2,3-dichloro phenyl) urea;N-(2--ydroxy-4nitrophenyl)-N'-(2,4-dichloro phenyl) urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-chloro phenyl) urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2,4-dibromo phenyl) urea; N-(2-Hydroxy- 1 -napthyl)-N'-(2-bromo phenyl) urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2,3-methylenedioxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl) N'-(3-chloro 2-methoxy phenyl) urea; N-[2-Hydroxy-4-(Benzylamino)carbony phenyl]-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-nitro phenyl)-N' -(2-phenoxy phenyl) urea; N-(2-Hydroxy-4-fluoro phenyl)-N'-(2-bromo phenyl) urea; N-(2-Hydroxy-3,4-difluoro phenyl)-N'-(2-bromo phenyl) urea; N-(2-Hydroxy 4-phenyl phenyl) N'-(2-bromo phenyl) urea;N-(2-Hydroxy 4-methyl phenyl)-N'-(2-bromo phenyl) urea; N-(2-Hydroxy-4-nitro pbenyl)-N'-(2-phenylamino phenyl) urea; N-(2-Hydroxy 3-carboxyphenyl)-N'-(2-bromo phenyl) urea; N-(2-Sulfliydryl-4-bromo phenyl)-N'-(2-bromo phenyl) urea; N-(2-Hydroxy 4-nitro phenyl)-N'-(2-iodo phenyl) urea; N-(2-Hydroxy 4-nitro phenyl)- N'-(2-bromo phenyl) thiourea; N-(2-Hydroxy-4-azidophenyl)-N'-(2-methoxyphenyl)urea; N-[2-Hydroxy-5-cyanophenyl]-N'-[2-broxnophenyl] urea; N-[2-Hydroxy-3-fluorophenyl]-N'-[2-bromophenyl] urea; N- [2-Hydroxy-3-fluoro-5-bromophenylll-N'-[2-bromophenyl] urea; N-[2-Hydroxy-3-chlorophenyl]-N'-[2-bromophenyl] urea;N-[2-Hydroxy-3trifluoromethylphenyl]-N'-[2-bromophenyl] urea N-[2-hydroxy-3,4-diphenyl phenyl]-N'-[2-bromophenylj urea;N-[2-Hydroxy-3glycinemethylestercarbonylphenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-3-glycincarbonylphenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-3,5-dichlorophenyl]-N-[2-bromophenyl] urea; N-[2-IHydroxy-3-nitrophenyl]-N'-[2-bromophenyl] urea;N-[2-Hydroxy-3,4dichlorophenyll-N'-[2-bromophenyll urea; N-[2-Hydroxy-3-cyanophenyll-N'-[2-bromophenyll urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2-bromophenylj urea;N-[2-Hydroxy-4cyanophenyl]-N'-[4-methoxyphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2phenyiphenyl] urea; N-12-Hydroxy-4-cyanophenyl-N'-[2-methylphenyl] urea; 24 .1 WO OOn6495 WO 0076495PCT/USOO/16499 N-[2-Hydroxy-4-cyanophenyl]--N'-[2-trifluoromethylphenyl] urea; N-[2-Hydroxy-4-cyanophenyll-N'-[3-trifluoromethylphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[4-trifluoromethylphenyl] urea; N-[2-Hydroxy-3-n-propylphenyl]-N'4[2-bromophenylI urea; N-[2-Hydroxy-4-ethylphenylll-N'-[2-bromophenyl] urea; N-[2-Ilydroxy-3-phenylanminocarbonyl phenyl]-N!-[2-bromophenylJ urea; N-[2-Hydroxy-3-cyano-4-methylphenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-4-carbophenyl phenyl]-N'-12-bromophenyl] urea; N-[2-Hydroxy-3-carbophenyl phenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-3-benzyloxy phenyl]-N'-1[2-bromophenyl] urea; [4-[2-(Methoxycarbonyl) ethenyl]-2-hydroxyphenyl]-N'-[2-bromopbenyl] urea; (E)-N-[3-[2-(Methoxycarbonyl)ethenyl]-2-hydroxyphenyl]-N'-[2-bromophenyllurea-N'- [2-bromophenyl] urea; (E)-N-[3-[2-(Aminocarbonyl)ethenyl]-2-hydroxyphenyl]-N'-[2-bromophenyllurea-N- [2-bromophenyl] urea; (E)-N-[4-[2-(Amninocarbonyl)ethenyl]-2-hydroxyphenyl]-N-[2-bromophenyl]urea-N- [2-bromophenyl] urea; N-12-Hydroxy-4-benzarnide phenyll-N'- [2-bromophenyl] urea; N-[2-Hydroxy-4-aminocarbonyl phenyl]-N'-[2-bromophenyll urea N-(2-Hydroxy-3,5 ,6-trifluorophenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-3-fluoro-4-trifluoromethylphenyl)-N-(2-bromophenyl)urea; N-(2-Hydroxy-3-iodophenyl)-N'-(2-bromophenyl)urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[4-phenylphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2,3-dichlorophenylI urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[2-methoxyphenyl] urea; N-[2-Hydroxy-4-cyanophenyl]-N'-[3-methoxyphenyl] urea; N-[2-Hydroxy-5-fluorophenyl]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-5-trifluoromethylphenyll-N-[2-broniophenyl] urea; N-[2-Hydroxyphenyl]-N'-[2-bromophenyl] urea;N-[Trans-3-styrl-2-hydroxyphenyl]-N- [2-bromophenyll urea; N-[2-Hydroxy-3,4-dichlorophenyl]-N'-[2-methoxyphenyl urea; N-[2-Hydroxy-3,4-dichlorophenyl]-N'- [4-methoxyphenyl] urea;N-[2-Hydroxy-3,4dichlorophenyl]-N'-{3-trifluoromethylphenyl] urea;N-[2-Hydroxy-3,4-dichlorophenyl]- N'-[2-phenylphenyl) urea;N-[2-Hydroxy-3,4-dichlorophenyl]-N-[4-phenylphenyl urea; N-12-Hydroxy-3,4-dichlorophenyl]-N- [2,3-dichiorophenyl] urea; N-[2-Hydroxy-4-isopropylphenyl]-N'-[3-trifluoromethylphenyl] urea; N-[2-Hydroxy-3-naphthyl]-N'- [2,3-dichiorophenyl] urea; N-(2-Hydroxy-4-azidophenyl)-N'-(2-iodophenyl)urea;N-(2-Hydroxy-3-azidophenyl)- N'-(2-bromophenyl)urea;N-[2-Hydroxy-3-cyanophenyl] -N'-[2-methoxyphenyl] urea; 25 WO OOn6495 WOOO/76495PCTLJSOO/I 6499 N-[2-Hydroxy-3-cyanophenyl]-N'-[3-trifluoromethylphenyl] urea; N-[2-Hydroxy-3-cyanophenyl]-N'-[2-phenylphenyl] urea; N-[2-Hydroxy-3-cyanophenyl]-N'-[2,3-dichlorophenyl] urea; N-[2-Hydroxy-4-isopropylphenyl]-N'-[2,3-dichlorophenyl] urea; N-[2-Hydroxy-4-isopropylphenyl]-N'-[2-chloro-5-trifluoromethylphenyl urea; N-[2-Hydroxy-3-phenylphenyl]-N-[2,3-dichloropheny] nitrophenyl]-N'-[2-methoxyphenyl] urea; N-[2-Hydroxy-5-nitrophenyl]-N'--[3-trifluoromethylphenyl] urea; N-[2-Hydroxy-5-nitrophenyl]-N'-12-phenylphenylI urea; N-[2-Hydroxy-5-nitrophenyl]-N'-[2,3-dichlorophenyl] urea; N-[2-Hydroxy-5-ethylsulfonylphenyl]-N'-[2,3-dichlorophenyll urea; N-12-Hydroxy-3,4-dichlorophenyl]-N'-[2,4 dimethoxyphenyl] urea; N-[2-Hydroxy-3,4-dichlorophenyll-N'.-[2-chloro-5-trifluoromethylphenyl] urea; N-12-Hydroxy-3,4-dichlorophenyl]-N-[benzyl] urea; N-[2-Hydroxy-4-isopropylphenyl]-N'-[3-trifluoromethylphenylI urea; N-[2-Hydroxy-3-naphthyll-N'-[3-trifluoromethylphenyl] urea; N-12-Hydroxy-3-naphthyll-N'-[2,3-dichlorophenyl urea; N-[2-Hydroxy-3-naphthyl]-N-[benzyl] urea, N- [2-hydroxy-3-(phenylaminocarbonyl) phenyll-N'-[benzoyl] urea; N-[2-Hydroxy-3-trifluoromethylphenyl]-N'-[benzoyl] urea; N-12-Hydroxy-4-cyanophenyl]-N'-{benzoyl] urea; acid]-N'-[2-bromophenyl] urea; N-[2-Hydroxy-4-naphthalenesulfonic acid]-N!-[2-bromophenyl] urea; N-(2-Hydroxy 3-napthyl) N'-(2-bromo phenyl) urea; N-(2-Hydroxy-l1-napthyl)-N'-(2-bromo phenyl) urea; and N-(2-Hydroxy-4-nitropheriyl)-N'-( 1-naphthyl)urea. Suitable phannaceutically acceptable salts are well known to those skilled in the art and include basic salts of inorganic and organic acids, such as hydrochloric acid, hydrobromic acid, sulphuric acid, phosphoric acid, methane sulphonic acid, ethane suiphonic acid, acetic acid, malic acid, tartaric acid, citric acid, lactic acid, oxalic acid, succinic acid, fumaric acid, maleic acid, benzoic acid, salicylic acid, phenylacetic acid and rnandelic acid. In addition, pharmaceutically acceptable salts of compounds of Formula may also be formed with a pharmaceutically acceptable cation, for instance, if a substituent group comprises a carboxy moiety. Suitable pharmaceutically acceptable cations are well known to those skilled in the art and include alkaline, alkaline earth, anmmonium and quaternary ammonium cations.

The following terms, as used herein, refer to: -"halo" all halogens, that is chloro, fluoro, bromo and iodo.

26 .1 WO 00/76495 PCT/US00/16499

"C

1 10 alkyl" or "alkyl" both straight and branched chain radicals of 1 to carbon atoms, unless the chain length is otherwise limited, including, but not limited to, methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl, tert-butyl, n-pentyl and the like.

The term "cycloalkyl" is used herein to mean cyclic radicals, preferably of 3 to 8 carbons, including but not limited to cyclopropyl, cyclopentyl, cyclohexyl, and the like.

The term "alkenyl" is used herein at all occurrences to mean straight or branched chain radical of 2-10 carbon atoms, unless the chain length is limited thereto, including, but not limited to ethenyl, 1-propenyl, 2-propenyl, 2-methyl-l-propenyl, 1butenyl, 2-butenyl and the like.

"aryl" phenyl and naphthyl; "heteroaryl" (on its own or in any combination, such as "heteroaryloxy", or "heteroaryl alkyl") a 5-10 membered aromatic ring system in which one or more rings contain one or more heteroatoms selected from the group consisting of N, O or S, such as, but not limited, to pyrrole, pyrazole, furan, thiophene, quinoline, isoquinoline, quinazolinyl, pyridine, pyrimidine, oxazole, thiazole, thiadiazole, triazole, imidazole, or benzimidazole.

"heterocyclic" (on its own or in any combination, such as "heterocyclicalkyl") a saturated or partially unsaturated 4-10 membered ring system in which one or more rings contain one or more heteroatoms selected from the group consisting of N, O, or S; such as, but not limited to, pyrrolidine, piperidine, piperazine, morpholine, tetrahydropyran, or imidazolidine.

The term "arylalkyl" or "heteroarylalkyl" or "heterocyclicalkyl" is used herein to mean CI-10 alkyl, as defined above, attached to an aryl, heteroaryl or heterocyclic moiety, as also defined herein, unless otherwise indicated.

"sulfinyl" the oxide S of the corresponding sulfide, the term "thio" refers to the sulfide, and the term "sulfonyl" refers to the fully oxidized S(0)2 moiety.

The term "wherein two RI moieties (or two Y moieties) may together form a 5 or 6 membered unsaturated ring" is used herein to mean the formation of a napthylene ring system or a phenyl moiety having attached a 6 membered partially unsaturated ring such as a C6 cycloalkenyl, i.e hexene, or a C5 cyloalkenyl moiety, cyclopentene.

The compounds of Formula (II) and (III) may be obtained by applying synthetic procedures, some of which are illustrated in the Schemes below.

The synthesis provided for in these Schemes is applicable for the producing compounds of Formula (II) and having a variety of different R, RI, and Ar groups which are reacted, employing optional substituents which are suitably protected, to achieve compatibility with the reactions outlined herein. Subsequent deprotection, in those cases, then affords compounds of the nature generally disclosed. Once the urea -27- WO 00/76495 PCT/US00/16499 nucleus has been established, further compounds of these formulas may be prepared by applying standard techniques for functional group interconversion, well known in the art. While the schemes are shown with compounds only of Formula this is merely for illustration purposes only.

Scheme 1 R a c x 0

NH

2 N N 1 2 R=NH 2 OH, CO 2 H, SH a)PhNCO NHSO 2

R

Ortho substituted phenyl ureas shown in 2-scheme 1 may be prepared by standard conditions involving the condensation of commercially available ortho substituted aniline(Aldrich Chemical Co., Milwaukee, Wi) with the commercially available optionally substituted aryl isocyanate (Aldrich Chemical Co., Milwaukee, Wi) in an aprotic solvent (DMF, toluene). When the 1-(RSO2NH)2-(NH2)Ph is not commercially available it can be made by treating the commercially available RSO2Cl with the corresponding 2-phenylene diamine in the presence of an base like triethyl amine or NalH in an aprotic solvent (like methylene chloride or DMF).

Scheme 2 a R, b ls R.

N O 2 2NH 2 3 4 OH, NH 2, NHSO 2 R a)HNO 23 *C b)SnCI 2, EtOH If the desired 2-substituted aniline 5-scheme 2, is not commercially available the corresponding nitro compound can be prepared from 3-scheme 2, under standard nitration conditions (using HNO 3 or BF 4

NO

3 at 23 The nitro compound is then reduced to the corresponding aniline using SnCl 2 in EtOH(or alternately H 2 /Pd or LiA1H 4 28 WO 00/76495 PCT/US00/16499 Scheme 3 N SH *I NH 2 a b NHNH 2 6 7 8 a)NH 4 SCN, Br 2 b)NaOH EtOH If the desired 2-amino benzenethiol 8-scheme 3 is not commercially available it can be synthesized by reaction of the phenyl aniline with the thiocyanate anion in the presence of an oxidant(like bromine) to produce the 2-amino benzthiazole 7-scheme 3.

This thiazole can then be hydrolyzed to the desired 2-amino benzenethiol 8-scheme 3 with a strong base like NaOH in a protic solvent EtOH).

Scheme 4 0 2 N OH

NH

2 a,b N LN

NH

2 9 0O 2 N OH X=S, 0 11 a)TBSCI, imid, DMF b)i)CICXCI, NaHCO 3, ii)PhNH 2 c)Et 3 N-HF, CH 3

CN

In the case where the thioisocyanate or phenyl isocyanate is not commercially available, the thiourea or urea 11-scheme 4 may be prepared from the commercially available ortho substituted aniline. This compound is first protected with a protecting group (tert-butyl dimethyl silyl or benzyl by conditions well known in the art(see Greene, T Protecting Groups in Organic Synthesis, Wiley&Sons, New York, 1981).

This protected aniline is then reacted, in the presence of a base(like triethyl amine or sodium bicarbonate), with either thiophosgene or a solution of phosgene in an aprotic solvent (ie. DMF, toluene), followed by aniline to produce the protected thiourea or urea respectively. The corresponding urea or thiourea is then deprotected, using conditions standard in the art, to form the desired thiourea or urea 11-scheme 4.

-29- WO 00/76495 PCT/US00/16499 Scheme a, b0 CO 2H s NA N 12 13 X a)(PhO) 2 PON 3 ,EtaNb)PhXNH 2 X=OH, NHSO 2 R, SH Alternately the urea can be formed using a Curtius rearrangement from the corresponding aromatic or thiophene carboxylic acid 12-scheme 5. The carboxylic acid is submitted to standard Curtius conditions ((PhO) 2

PON

3 Et 3 N or CICOCOCI followed by NaN 3 and the intermediate isocyanate is trapped by an appropriately substituted aniline.

Pharmaceutically acceptable salts of compounds of Formula may be obtained in known manner, for example by treatment thereof with an appropriate amount of acid or base in the presence of a suitable solvent.

Another aspect of the present invention is the novel synthesis of cyano nitrophenol intermediates. Numerous conversions of aryl halides to aryl cyano derivatives with copper cyanide have been published. However, no examples of an aryl ring with a hydroxy group present were mentioned. Several attempts to obtain a cyano phenol moiety with published results failed. Using known conditions of elevated temperatures, greater than 170°C, such as from 180 to 2100 did not yield displacement of the halogen to a cyano moiety. Standard bases, such as DMF and pyridine further provided no desired product. Intermediates such as 2-amino-5-fluorophenol, fluorophenol, 2-nitro-5-methyl-6-bromophenol were tried with a change of halogens, from fluorine to chlorine to bromine, and with use of copper cyanide. The use of a bromine derivative, such as 2-nitro-5-methyl-6-bromophenol with dimethylformamide and using triethylamine with a catalytic amount of dimethylamino pyridine and copper cyanide at reduced temperatures,, i.e. <100 0 C, preferably 60 to about 80 0 C for reduced times from standardized procedures, 18 hours, preferably about 4 to 6 hours yielded the desired products.

Therefore one aspect of the invention is to a process for producing a cyano phenol derivative of the formula:

H

r~cN.

WO 00/76495 PCT/US00/16499 wherein R1 is as defined for Formula above, which method comprises reacting a compound of the formula:

R,

wherein X is halogen with copper cyanide, dimethylformamide, triethylamine and a catalytic amount of dimethylamino pyridine. Preferably, the process is run at reduced temperatures of about 60 to about 80 0 C. Preferably X is bromine.

In the Examples, all temperatures are in degrees Centigrade Mass spectra were performed upon a VG Zab mass spectrometer using fast atom bombardment, unless otherwise indicated. 1 H-NMR (hereinafter "NMR") spectra were recorded at 250 MHz or 400MHz using a Bruker AM 250 or Am 400 spectrometer, respectively.

Multiplicities indicated are: s=singlet, d=doublet, t=triplet, q=quartet, m=multiplet and br indicates a broad signal. Sat. indicates a saturated solution, equiv. indicates the proportion of a molar equivalent of reagent relative to the principal reactant.

Flash chromatography is run over Merck Silica gel 60 (230 400 mesh).

SYNTHETIC EXAMPLES The invention will now be described by reference to the following examples which are merely illustrative and are not to be construed as a limitation of the scope of the present invention. All temperatures are given in degrees centigrade, all solvents used herein are of the highest available purity and all reactions are run under anhydrous conditions in an argon atmosphere unless otherwise indicated.

General Method A: Synthesis of N, phenyl urea To a solution of substituted phenyl isocyanate (1.0 equiv.) in toluene (5 miliLiters (hereinafter the corresponding aniline (1.0 equiv.) was added. The reaction mixture was stirred at about until complete (24-48 hours (hereinafter "hrs" or then cooled to room temperature. The purifications, yields and spectral characteristics for each individual compound are listed below.

General Method B: Synthesis of N, phenyl urea To a solution of phenyl isocyanate (1.0 equiv.) in dimethyl formamide (ImL) the corresponding aniline equiv.) was added. The reaction mixture was stirred at about 80 0 C until complete (24- 48 hours), then the solvent was removed under vacuum. The purifications, yields and spectral characteristics for each individual compound are listed below.

General Method C:Synthesis of sulfonamide The ortho substituted aniline (1 equiv.), triethyl amine (1 equiv.) and the desired sulfonyl chloride (1 equiv.) were combined in methylene chloride and allowed to stir at about 23 oC until complete (12-36 The reaction mixture was partitioned between water and methylene chloride. The organic -31- WO 00/76495 PCT/US00/16499 layer was separated and dried over magnesium sulfate, filtered and concentrated in vacuo. The purifications of each compound are listed below.

Example 1 Preparation of N-[2-Hydroxy-4-(methoxycarbonyl)phenvll-N'-phenvl urea N-[2- Hydroxy-4-(methoxycarbonyl)phenyl]-N'-phenyl urea was prepared from methyl-4amino-3-hydroxybenzoate (200 mg, 1.19 mmol) and phenyl isocyanate (1.19 mmol) according to the procedure noted above in General Method A. The product was purified by precipitation from toluene, and filtering, to afford the titled compound (309 mg, mp: 188.4-188.8 0 C; 1 H NMR (CD 3 0D/CDC1 3 8 8.15 1H, J 8.25 Hz), 7.70 1H), 7.51 1H, J 8.25 Hz), 7.43 2H, J 8.25 Hz), 7.30 2H, J 8.25 Hz), 7.01 1H, J 8.25 Hz), 3.87 3H); EI-MS m/z 286 Anal.

(C

1 5

H

14

N

2 0 4 C, H, N.

Example 2 Preparation of N-[5-nitro-2-hydroxyphenyll-N'-phenyl urea The N-[5-nitro-2hydroxyphenyl]-N'-phenyl urea was prepared from the 5-nitro 2-hydroxy aniline and phenyl isocyanate according to the procedure in General Method A. The product was purified by precipitation from toluene and filtering to afford the titled compound (100 mg, 1H NMR (CD30D): 8 9.48 1H, NH), 9.07 J 1.56 Hz, NH), 8.55 (s, IH), 7.80 (dd, 1H, J 6.25 Hz and J 1.56 Hz), 7.50 2H, J 6.25 Hz), 7.30 2H, J 6.25 Hz), 7.01 2H). EI-MS m/z 273 Example 3 Preparation of 3-hvdroxy-4-{ [(phenvlamino)carbonvllamino}benzamide a)Preparation of 0.67 Molar (hereinafter Stock Solutions of Aluminum Amide Reagents To a suspension of the appropriate hydrochloride (0.02 mole (hereinafter in dry toluene (20 mL) at about o0C, was slowly added a solution of (2M, mL) of trimethyl aluminum in toluene. After the addition was complete, the reaction mixture was allowed to warm to room temperature and was stirred for about 1-2 hours until gas evolution has ceased.

b)Preparation of 3-hydroxy-4-( [(phenylamino)carbonyl]amino }benzamide To a solution of the N-[2-hydroxy-4-(methoxycarbonyl)phenyl]-N'-phenyl urea milligram (hereinafter 0.2 mmol) in toluene (2 mL) was added aluminum amide reagent (0.9 mL, 0.67M). The reaction mixture was stirred at reflux for about 12 hours. The reaction mixture was cooled to room temperature and was carefully quenched with 5% HCI. The organic layer was separated and the aqueous layer was extracted three times with ethyl acetate. The organic extracts were combined, dried over MgSO4, filtered and concentrated under reduced pressure. Chromatography of the resulting solid on silica gel (ethyl acetate) gave the desired amide (28 mg, mp: 106.8-107.1 0 C; 1H NMR (CD30D/CDC13): 8 7.98 1H, J 8.25 Hz), 7.35 2H, J -32- WO OV76495 WO 0076495PCrIUSOO/16499 8.25 Hz), 7.30 2H, J 8.25 Hz), 7.17 2H, J 8.25 Hz), 6.91 IIH, J 8.25 Hz); El-MS rn/z 271 Anal. (C 14

H

13

N

3 0 3 C, H, N.

Example 4 Preparation of N-(2-hvdroxy-4-fluorophenyl)-N'-phenyl urea a) Preparation- of 2-arnino-5-fluoro phenol A mixture of 5-fluoro-2-nitrophenol (500 mg, 3.18 rmnol) and tin (II) chloride (1.76 g, 9.2 mmol)'in ethanol (10 niL) was heated at 80*C under argon. After 30 min, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH by addition of aqueous sodium bicarbonate, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. Evaporation of the solvent gave the title compound(335 mg, 1 H NMR (CD 3 OD/CDC1 3 8 6.6 (in, IH), 6.38 (dd, 1H1, J 8.3 Hz and J 2.8 Hz), 6.29 (in, IH).

b) Preparation of N-(2-hydroxy-4--fluorophenyl)-N'-phenyl urea N-(2-Hydroxy-4-fluorophenyl)-N'-phenyl urea was prepared from fluoro phenol (200 mng, 1.57 inmol) and phenyl isocyanate according to the procedure in General Method A. The product was purified by precipitation from toluene and filtering to afford the titled compound (352 mg, 91 mp: 195.5-195.7*C; IIH NMR

(CD

3 OD/CDC1 3 8 7.70 (in, IH), 7.3 2H, J 8.25 Hz), 7.15 2H1, J 8.25 Hz), 6.89 1H, J 8.25 Hz), 6.50 6.38 (in, 211); El-MS m/z 246 Anal.

(C

13 Hj IN 2 0 2 F) C, H, N.

Example Preparation of 2- f f(phenylamino)carbonyllamino I thiophenol 2-1 [(Phenylamino)carbonyl]arnino thiophenol was prepared from 2aminothiophenol (200 mng, 1.6 inmol) and phenyl isocyanate according to the procedure in General Method A. The product was purified by precipitation from toluene and filtering to afford the titled compound (330 mg, 85 mp: 194.5'C; I H NMR

(CD

3 OD/CDCl 3 857.48 7.26 (in, 411), 7.25 7. 10 (mn, 3H1), 7.04 6.79 (in, 2H1); El- MS m/z 244 Anal. (C 13

HI

2

N

2 0S) C, H, N.

Example 6 Preparation of N-(2-Carboxy-4-hydroxyphenyl)-N'-nhenyI urea N-(2-Carboxy-4-hydroxyphenyl)-N'-pheny urea was prepared from hydroxy benzoic acid (1 g, 6.53 inmol) according to the procedure in General Method B. The reaction mixture was partitioned between ethyl acetate and water. The organic phase was washed with brine, dried over MgSO 4 and filtered. Removal of solvent under reduced pressure and chromatography of the resulting solid on silica gel (hexane :ethyl acetate, 1: 1 to 100% ethyl acetate) gave the titled compound (1.5 g, 1

H

NMR (CD 3 OD/CDC1 3 8 8.36 1H, J 8.25 Hz), 7.63 (in, 4H), 7.48 2H, J 8.25 7.20 (in, IIH); El-MS m/z 272 Anal. (C1 4

HI

2

N

2 0 4 C, H, N.

33 WO 00/76495 PCT/US00/16499 Example 7 Preparation of N [2 hvdroxv 4- (trifluoromethyl) phenyll N' phenyl urea a) Preparation of was prepared by adding concentrated HNO 3 (6 mL) drop-wise to aoa-trifluoro-m-cresol (5g, 30.8 mmol) at room temperature. After the addition was complete the reaction was quenched with saturated ammonium acetate and extracted with EtOAc. The organic was separated, dried over sodium sulfate and filtered. Concentration of the solution in vacuo afforded an oil which was purified by column chromatography (gradient 100% hexane to 50% EtOAc/hexanes) to afford the titled compound as an oil(1.7 g, 1H NMR (CDC13): 10.6 1H, OH), 8.26(d, 1H, J 7.8 Hz), 7.45(s, 1H, arom), 7.26(d, 1H, J= 7.8 Hz) b) Preparation of was prepared by treating trifluoromethylphenol (500 mg, 2.41 mmol) with a solution of SnCl 2 (3.5g, mmol) in EtOH at 23 oC for 12h. The mixture was concentrated to 50 mL and adjusted to pH 7 using saturated sodium bicarbonate. The reaction mixture was partitioned between and EtOAc. The aqueous layer was separated and extracted with EtOAc. The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo. The resulting colorless oil (370 mg, 87%) was used without further purification.

1H NMR (CDCl 3 7.6 1H), 7.39(d, 1H, J 8.5 Hz), 7.08(d, 1H, J= 8.5 Hz) c)Preparation of N [2 hydroxy 4- (trifluoromethyl) phenyl] N' phenyl urea N [2 Hydroxy 4- (trifluoromethyl) phenyl] N' phenyl urea was prepared from 2-amino-5-trifluoromethylphenol (150 mg, 1.09 mmol) and phenyl isocyanate(1.09 mmol) according to the procedure in General method A. The product was purified by precipitation from methylene chloride and filtering to afford the titled compound (230 mg, 87% mp: 1H NMR (DMSO-d 6 8 9.45 1H, NH), 8.50 1H, NH), 8.31 1H, J 10.0 Hz), 7.45 2H, J 10.0 Hz), 7.29 2H, J 6.67 Hz), 7.10 2H), 6.99 1H, J 6.67 Hz). EI-MS m/z 296 Anal.

(CI

4

H

11

N

2 0 2

F

3 H, N.

Example 8 Preparation of N-(2-hydroxv-4-nitrophenvl)-N'-(2-hvdroxy-4-nitrophenyl) urea a) Preparation of 2-(tert-butyldimethylsilyloxy)-4-nitroaniline To a solution of 2-amino-5-nitrophenol (1 g, 6.49 mmol) and imidazole (0.88 g, 12.3 mmol) in DMF (15 mL), tert -butyldimethylsilyl chloride (11.2 mL, 64.9 mmol) was added. The resulting mixture was allowed to stir at 23 0 C for 48 hours. The reaction mixture was partitioned between 0.1 HCI and ethyl acetate. The combined organic phase was washed with brine, dried over MgSO 4 and filtered. Removal of solvent at reduced pressure and chromatography of the resulting oil on silica gel (hexane ethyl -34- WO 00/76495 WO 0076495PCT/USOO/16499 acetate; 5: 1) gave the titled compound (1.7 g, 98 I H NMR (CDCI 3 5 7.78 (dd, I H, J =6.7 Hz and J 2.7 Hz), 7.61 I1H, J 2.7 Hz), 6.7 I1H, J 8.8 Hz), 1.0 (s, 9H1), 0.28 6H).

b) Preparation of N-[(2-tert-butyldimethylsilyloxy)-4-nitrophenyll-N-I(2tert-butyldimethylsiloxy)-4- nitrophenyl] urea To a solution of 2-(tert-butyldimethylsilyloxy)-4-nitroaniline(200 mg, 0.75 minol) ini toluene (10 mL) triethylarnine 13 niL, 1.64 nimol) and triphosgene (8 8.4 mg, 0.3 mmol) were added. The reaction mixture was stirred at 70*C for 2 hours, then cooled to room temperature. Then more 2-(tert -butyldimethylsilyloxy)-4-nitroaniline (200 mg, 0.75 nimol) was added. The resulting mixture was allowed to stir at 70'C for 48 hours then cooled to room temperature. The reaction mixture was partitioned between water and ethyl acetate. The combined organic phase was washed with brine, dried over MgSO4 and filtered. Removal of solvent at reduced pressure and chromatography of the resulting oil on silica gel (hexane :ethyl acetate, 10: 1) gave the titled compound(1 30 mg, 3 'H NMR (CDCl 3 8 8.36 2H, J 8.3 Hz), 7.90 (dd, 2H1, J 8.3 Hz and J 2.8 Hz), 7.71 2H, J 2.8 Hz), 7.22 2H), 1.02 (s, 18H), 0.35 12H).

c) Preparation of N-(2-Hydroxy-4-nitrophenyl)-N'-(2-hydroxy-4nitrophenyl) urea To a solution of N-I(2-tert-butyldimethylsilyloxy)-4-nitrophenyl]-N'-[(2-tertbutyldimethylsilyloxy)-4- nitrophenyl] urea(50 mg, 0.089 mmol) in THIF (2 niL), tetrabutylammonium fluoride (1 M, 0.09 niL, 0.089 mmnol) was added at 0 0 C. The reaction mixture was stirred at 23'C. After I hour, the starting material had disappeared. The reaction mixture was partitioned between water and ethyl acetate. The combined organic phase was dried over MgSO 4 and filtered. Removal of solvent at reduced pressure and chromatography of the resulting oil on silica gel (hexane ethyl acetate; 1: 1 to 100% ethyl acetate) gave the tidled compound(24 mig, 1 H NMR

(CD

3 OD/CDC1 3 8 8.32 2H, J 8.25 Hz), 7.80 (dd, 2H, J 8.25 Hz and J 2.06 Hz), 7.7 2H, J 2.06 Hz). ELMS ni/z 334 Anal. (C 13

HI

0

N

4 0 7 C, H, N.

Example 9 Preparation of N-(2-hydroxy-4-nitrophenyl)-N'-phenyl-thiourea a) Preparation of N-(2-tert-butyldimethysilyloxy-4-nitrophenyl)-N'-phenylthiourea N-(2-tert-Butyldimethysilyloxy-4-nitrophenyl)-N'-phenyl-thiourea was prepared by treating a biphasic solution of 2-tert-butyldimethysilyloxy-4-nitroaniline(80 mig.

0.308 mmol) and NaHCO 3 in CHCl 3

:H

2 0(2.5: 1, 7mL) with thiophosgene at 0 0 C. The solution was allowed to warm to 23 0 C and the reaction was continued overnight. The CHC1 3 layer was separated and dried over sodium sulfate. The solution was concentrated in vacuo and the residue was dissolved in toluene and treated with aniline WO 00/76495 WO 0076495PCT/USOO116499 (100 uL) at 23 0 C for 12 h. The reaction mixture was concentrated and the residue was purified by flash chromatography (10% EtOAc/hexane) to afford the titled compound as a yellow solid (120.8 mg, 98%) mp: 144-1450C;lIH NMR (CD 3

OD/CDCI

3 8 8.65 1H, J 10.0 Hz), 7.58 1H, J 10.0 Hz), 7.47 III, J 1.25 Hz), 7.26 (in, 4H), 7.10O(mn,1H).

b) Preparation of N-(2-hydroxy-4-nitrophenyl)-N'-phenyl-thiourea N-(2-Hydroxy-4-nitrophenyl)-N'-phenyl-2-thiourea was prepared by treating a solution of N-(2-tert-butyldimethysilyloxy-4-nitrophenyl)-N'-phenyl-thiourea (100mig, 0.248 mmol) in CH 3 CN (1 inL) with Et 3 N.HF (I OOuL, 0.62 mmol) in acetonitrile for 10 minutes at 23 0 C. The solution was concentrated and flushed through a silica plug with EtOAc to afford the desired compound as an orange solid (55 mng, 77%).

mp: 144-145oC;IH NMR (CD 3 OD/CDC1 3 8 8.65 IH, J 10.0 Hz), 7.58 1H, J1 =10.0 Hz), 7.47 1H, J 1.25 Hz), 7.26 (in, 4H), 7.10 (in, 1H).

Example Preparation of nitro 2-(phenylsulfonylamino~hhenyl)-N'-phenyI urea a) Preparation of 4-nitro 2-(phenylsulfonylaxnino) aniline A solution of 4-nitro 1,2-phenylene diamine(l.53 g, 10.0 mmol) in DMF was treated with phenyl sulfonyl chloride(1.76 g, 10.0 rmol) and triethyl amine(1.01 g) in DMF for 12 h at 23 0 C. The reaction mixture was partitioned between saturated NH 4

C]

and methylene chloride. The organic layer was dried over sodium sulfate, filtered and concentrated in vacuc. The resulting solid was recrystallized (EtOH) to afford desired (0.275 g, NMR(DMSO) 9.5(s, III, br), 7.83 (dd, 1H, J=10 Hz, 2 Hz), 7.74(d, 2H, J=8 Hz), 7.76(t, III, J=9 Hz), 7.56(t, 2H, J=8 Hz), 7.55(d,lH, J=2Hz), 6.79 1H, J=811z), 6.5(s, 2H, br) b) Preparation of nitro 2-(phenylsulfonylarnino)phenyl)-N'-phenyl urea N-(4-Nitro 2-(phenylsulfonylarmino)phenyl)-N'-phenyl urea was prepared from 4- nitro 2-(phenylsulfonylamino) aniline(82 mg) and phenyl isocyanate(33 mng) by method A. The reaction was cooled and then partitioned between saturated ammo niuin chloride and 9:1 methylene chloride and methanol. The organic phase was dried over magnesium sulfate, filtered and concentrated in vacuc. The residue was purified by column chromatography (ethyl acetate/hexane) to afford desired(30.8 mg, El-MS m/z 413(M+H)' Example 11 Preparation of N-(2-hydroxy-5-nitrophenyl)-N'-(3-methoxy-2-thienyl)urea a) Preparation of 3-methoxy-2-thienylcarboxlic acid To a solution of 3-inethoxythiophene (4.81 g, 42.1 mmol) in ether (20 m.L) at 78 0 C, butyllithium. (17 mL, 47.6 minol) was added. The reaction mixture was stirred at -78'C for 1 hour, then it was warmed to 0 0 C for 3 hours. After to recooling -78 0 C the -36- WO 00/76495 PCT/US00/16499 reaction mixture was poured into a beaker filled with crushed dry ice (14.5 g) and allowed to stand until the excess dry ice had completely sublimed. Then the reaction mixture was poured into a mixture of ice (10 g) to which cone. HCI (24 mL) had been added. The product was purified by precipitation from ether and filtering (6.42 g, 96 EI-MS m/z 159 b)Preparation of N-(2-hydroxy-5-nitrophenyl)-N'-(3-methoxy-2-thienyl)urea To a solution of 3-methoxy-2-thiophene carboxylic acid (200 mg, 1.27 mmol) in benzene, (PhO) 2

PON

3 (0.33 mL), 2-amino-4-nitrophenol (195.7 mg, 1.27 mmol) and triethylamine (1.1 equiv., 0.25 mL) were added. The reaction mixture was stirred at reflux overnight. The reaction mixture was partitioned between 5% citric acid and ethyl acetate. The organic layer was separated and the aqueous layer was extracted three times with ethyl acetate. The organic extracts were combined, dried over MgSO4, filtered and concentrated under reduced pressure. Chromatography of the resulting solid on silica gel (hexane:ethyl acetate;: 1) gave a solid product (160 mg, mp: 172.6-173.0 0 C; 'H NMR (CD30D/CDC3): 8 8.96 1H, J 2.5 Hz), 7.74 (dd, 1H, J Hz and J 1.25 Hz), 6.82 1H, J =7.5 Hz), 6.76 2H), 3.80 3H); EI-MS m/z 309 Anal. (C 12 H11N 3 0 5 S) C, H, N.

Example 12 Preparation of N-(2-hydroxv-4-nitrophenvl)-N'-(3-methoxy-2-thienyl)urea To a solution of 3-methoxy-2-thiophene carboxylic acid (example 1 la, 200 mg, 1.27 mmol) in toluene, (PhO) 2

PON

3 (0.33 mL) and triethylamine (1.1 equiv., 0.25 mL) were added. The reaction mixture was stirred at 70 0 C for 2 hours and cooled down to room temperature then 2-amino-5-nitrophenol was added. The reaction mixture was stirred at 70 0 C overnight. The reaction mixture was partitioned between 5% citric acid and ethyl acetate. The organic layer was separated and the aqueous layer was extracted three times with ethyl acetate. The organic extracts were combined, dried over MgSO4, filtered and concentrated under reduced pressure. Chromatography of the resulting solid on silica gel (hexane:ethyl acetate;1:1) gave the product (190 mg, 1 H NMR (CD30D/CDC13): 8 8.38 1H, J 5.0 Hz), 7.85 (dd, 1H, J 5.0 Hz and J 1.25 Hz).

7.76 1H, J 2.5 Hz), 6.9 2H), 3.95 3H); EI-MS m/z 309 Anal.

(CI

2 HI 1

N

3 0 5 S) C, H, N.

Example 13 Preparation of N-(2-hvdroxv-4-nitrophenyl)-N'-(3-methoxphenvl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(3-methoxyphenyl)urea was prepared from 2-hydroxy 4-nitro aniline (154 mg, 1.0 mmol) and 3-methoxy phenyl isocyanate(1.0 mmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound (140 mg, EI-MS m/z 302(M-H) Example 14 -37- WO OOn6495 WO 0076495PCT/USOOI16499 Preparation of N-(2-hydroxy-4-nitron~henvl)-N'-(2-methoxyphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methoxyphenyl)urea was prepared from 2-hydroxy 4-nitro aniline (154 mg, 1.0 mmol) and 2-methoxy phenyl isocyanate( 1 mmol.) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound (82 mg, El-MS nu/z 302(M-H)- Example Preparation of N-(2-hydroxy-4-nitrophenyl)-N'-(3-trifluoromethyljphenvl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(3-methoxyphenyl)urea was prepared from 2-hydroxy 4-nitro aniline (154 mng, 1.0 mmol) and 3-trifluoromethyl phenyl isocyanate (1 mmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound (180 mg, 5 El-MS mlz 342(M+H) Example 16 Prep~aration of N-(2--hydroxy-4-nitrgphenyl)-N'-(2-trifluoromethylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-trifluoromethylphenyl)urea was prepared from 2hydroxy 4-nitro aniline (154 mg, 1.0 minol) and 2-trifluoromethyl phenyl isocyanate mmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound (180 mg, El-MS rn/z 342(M+H) Example 17 Preparation of N-(2-hydroxy-4-nitrophenvE)-N'-(4-trifluoromethylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(4-trifluoromethylphenyl)urea was prepared from 2hydroxy 4-nitro aniline (154 mg, 1.0 mimol) and 4-trifluoromethyl phenyl isocyanate (1.0 mmnol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound (111 mg, El-MS m/z 340(M-H)- Example 18 Preparation of N-(2-hydroxv-4-nitrophenyl)-N'-(2-bromophenl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-.(2-bromophenyl)urea was prepared from 2-hydroxy 4nitro aniline (500 mng, 3.24 mmol) and 2-bromophenyl isocyanate (3.24 mmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(530 mng, El-MS m/z 350(M-H) Example 19 Preparation of N-(2-hydroxy-4-nitrohenyl)-N'-(3-bromo]2henyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(3-bromo phenyl)urea. was prepared from 2-hydroxy 4-nitro aniline (500 mg, 3.24 mmol) and 3-bromno phenyl isocyanate (3.24 mmol)according to the procedure in General Method B. The product was purified by 38 WO 00/76495 WO 0076495PCTIUSOO/16499 dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.96g, El-MS m/z 350(M-H) Example Preparation of N-(2-hydroxv-4-nitrophenyl)-N'-(4-bromophenl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(4-bromo phenyl)urea was prepared from 2-bydroxy 4-nitro aniline (500 mg, 3.24 mmol) and 4-bromo phenyl isocyanate (3.24 nunol) according to the procedure in General Method B. The product was purified by dilution with methylene, chloride and precipitation with hexane. Filtering afforded the title compound(0.4 1 g, El-MS m/z 352(M+H) Example 21 Prep~aration of N-(2-hydroxv-4-nitrophenyl)-N'-(2-phenyl]2henyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-phenylphenyl)urea was prepared from 2-hydroxy 4nitro aniline (500 mg, 3.24 mmol) and 2-phenyl phenyl isocyanate (3.24 mmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.22 g, El-MS m/z 350(M+H) Example 22 Prelnaration of N-(2-hydroxv-4-nitrophenyl)-N-( 1-naphthyl)urea N-(2-Hydroxy-4-nitrophenyl)-N-( 1 -naphthyl)urea was prepared from 2-hydroxy 4-nitro, aniline (500 mg, 3.24 mmol) and 1-naphthyl isocyanate (3.24 mmol) according to the procedure in General Method B. The product precipitated from methylene chloride and filtered. The resulting solid was triturated with 1:3 triethyl aniine:methylene chloride. The filtrate was concentrated in vacuo. The resulting residue was dissolved in methylene chloride and treated with 1N HCl in water. The desired product precipitated from solution and was collected by filtration(0.l 11g, El-MS m/z 324(M+H) Example 23 Preparation of N-(2-hydroxv-4:nitrophenyl)-N'-(2-nitrophenylurea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-nitro phenyl)urea was prepared from 2-hydroxy 4nitro aniline (500 mg, 3.24 mmol) and 2-nitro phenyl isocyanate (3.24 mnmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.44 g, EL-MS m/z 319(M+H) Example 24 Preparation of N-(2-hydroxy-4-nitrophenvyl)-N'-(2-fluorop2henvyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-fluorophenyl)urea was prepared from 2-hydroxy 4nitro aniline (500 mig, 3.24 mmol) and 2-fluoro phenyl isocyanate (3.24 mniol) according to the procedure in General Method B. The product was purified by dilution 39 WO OOn6495 WO 0076495PCTIUS00116499 with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.59 g, 31 El-MS m/z 292(M+H) Example Preparation of N-(2-hvdroxy-4-nitrophenyl')-N'-(2,6-difluorophenl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2,6-difluorophenyl)urea was prepared from 2hydroxy 4-nitro aniline (500 mg, 3.24 mniol) and 2,6-difluoro phenyl isocyanate(3.24 mol) according to the procedure in General Method B. The product was purified by dilution with muethylene chloride and precipitation with hexane. Filtering afforded the title compound(0.91 g, 91 El-MS mlz 308(M-H) Example 26 Preparation of N-(2-hydroxy-4-nitrop~hen-yl)-N'-(2-ethoxyphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-ethoxyphenyl)urea was prepared from 2-hydroxy 4nitro aniline (500 mg, 3.24 ninol) and 2-ethoxy phenyl isocyanate (3.24 rnmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(O.84 g, 81 El-MS m/z 318(M+H) WO 00/76495 WO 0076495PCTLJSOO/16499 Example 27 Preparation of N-(2-hydroxy-4:nitrophenyl)-N'-(2-ethylp~henyl)urea N-(2-Hydroxy-4-nitrophenyl)-N-(2-ethylphenyl)urea was prepared from 2-hydroxy 4nitro aniline (500 mg, 3.24 minol) and 2-ethyl phenyl isocyanate (3.24 mmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title coinpound(0.44 g, El-MS m/z 302(M+H) Example 28 Preparation of N-(2-hydroxv-4-nitro phenyl)-N'-(2-trifluoromethoxyphenl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-trifluoromethyloxyphenyl)urea was prepared from 2-hydroxy 4-nitro, aniline (500 mg, 3.24 mmol) and 2-trifluoromethoxy phenyl isocyanate (3.24 mmol) according to the procedure in General Method B. The product was purified by dilution with methylene chloride and precipitation with hexane.

Filtering afforded the title compound(0.69 g, El-S m/z 358(M+H) Example 29 Synthesis of N-(2-hydroxv-4-nitro phen-l) N'-(2-methylthio 12henyl) urea The urea was prepared from 2-hydroxy 4-nitro aniline (500 mg 3.24 mmol) and 2-methylthio phenyl isocyanate(3.24 mmol) by general Method B. The product was purified by dilution with methylene chloride and precipitation with hexane.

Filtering afforded the title compound(0.63 g, 61 El-MS m/z 320(M+H) Example Synthesis of N-(2-hydroxy-4-nitro 12henyl) N'-(2-chloro 6-methyl Phenyl) urea The urea was prepared from 2-hydroxy 4-nitro aniline (500 mg, 3.24 mmol) and 2-chloro 6-methyl phenyl isocyanate by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired cornpound(0.31 g, El-MS mlz 322(M+H) Example 31 Synithesis of N-(2-hydroxy-4-nitro pheni) N4-2- methyl sulfoxyphenvi) urea The urea was synthesized by treatment of 2-hydroxy 4-nitro phenyl) Y-(2methyl thio phenyl) urea(example 28, 100 mg) with sodium perorate( 100 mg) in tbutton/water for 12 hours at 23 TC. The product precipitated from the reaction mg, El-MS ni/z 336(M+H) Example 32 Synthesis of N-(2-hydroxy 4-trifluoromethyl phenyl) N'-(2-bromo phenyl) urea The urea was prepared from 2-hydroxy 4-trifluoromethyl aniline(examnple 7a, 0. 17 1ig, 1 mmol) and 2-bromo phenyl isocyanate(1 mmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.25 g, El-MS ni/z 375(M+H) Example 33 -41wo oon6495 WO 0076495PC/USOO/1 6499 Synthesis of N-(2-hydroxy 4-carbomethoxy phenyl) N'-(2-bromo Dhenyl) urea The urea was prepared from 2-hydroxy 4-carbomethoxy aniline(0. 167 g, 1 mmol) and 2-bromo, phenyl isocyanate(lI mmnol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(O. 12 g, 33 ELMS m/z 363(M-H) Example 34 Synrthesis of N-(2-hydroxy 4-trifluoromethyl phenyl) NV-2-phenl phenyl) urea The urea was prepared from 2-hydroxy 4-trifluoromethyl aniline(example 7a, 0. 171 g, 1 nunol)) and 2-phenyl phenyl isocyanate by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.24 g, ELMS m/z 373(M+H)+ Example Synithesis of N-(2-hydroxy 4-carbomethoxy phenyl) N'-2-phenyl phenyl) urea The urea was prepared from 2-hydroxy 4-carbomethoxy aniline(0. 167 g, 1 mimol) and 2-phenyl phenyl isocyanate(1. mmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0. 185 g, El-MS m/z 3 63 (M-H) Example 36 Synthesis of N-(2-hydroxy 4-nitro phenyl) N-(2,3-dichloro phenyl) urea The urea was prepared from 2-hydroxy 4-nitro aniline(308 mg, 2 mmol) and 2,3-dichloro phenyl isocyanate(2 minol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.5 g, El-MS m/z 342(M+H)+ Example 37 Synthesis of N-(2-hydroxy 4-nitro, phenyl) N-(2,4-dichloro phenyl) urea The urea was prepared from 2-hydroxy 4-nitro aniline(308 mg, 2 mnmol) and 2,4-dichioro phenyl isocyanate(2 mmol) by general Method B. It was purified by dilution with mnethylene chloride and precipitation with hexane. Filtering afforded the title compound(0.26 g, El-MS m/z 342 (M+H) Example 38 Synithesis of N-(2-hydroxy-4-nitro phenyl) N-2-chloro phenyl) urea The urea was prepared from 4-nitro 2-hydroxy aniline(308 mg, 2 mmol) and 2chloro phenyl isocyanate(2 mmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.29 g, ELMS m/z 308(M+H)+ Example 39 S y pthesis of N-(2-hydroxy-4-nitrophenyl) N-(24-dibromo nhenyl) urea The urea was prepared from 4-nitro, 2-hydroxy aniline(308 mg, 2 mrnol) and 2,4-dibromo phenyl isocyanate(2 mmol) by general Method B. It was purified by -42- WO 00/76495 PCT/US00/16499 dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.34 g, EI-MS m/z 430(M+H) Example Synthesis of N-(2-hvdroxynapthvl) N'-(2-bromo phenyl) urea The urea was prepared from 1-amino 2-hydroxy naphthalene(195 mg, 1 mmol) and 2-bromo phenyl isocyanate(1 mmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.030 g, EI-MS m/z 357(M+H)+ Example 41 Synthesis of N-(2-hvdroxy-4-nitrophenyl)-N'-(2,3-methylenedioxyphenyl)urea a) Preparation of 2,3-methylenedioxyphenylcarboxylic acid A solution of 1,3-benzodioxole (3.09 g, 32 mmol) in dry ether (50 mL) was treated dropwise at -10 0 C with 2.5 M n-butyllithium (15 mL, 35 mmol) in hexane.

When the addition was complete, the mixture was stirred under reflux for one hour.

After cooling to room temperature, it was added to crushed solid carbon dioxide, and after 24 hours, the residue was treated with 10 aq. NaHCO 3 and ether. The alkali layer was separated, washed with ether, then acidified with cold concentrated HCI, and extracted with chloroform. The combined organic layers were dried over MgSO 4 filtered and concentrated under reduced pressure (1.1 g, 20 EI-MS m/z 167 (M+H) b) Preparation of N-(2-hydroxy-4-nitrophenyl)-N'-(2,3ethylenedioxyphenyl)urea To a solution of the 2,3-methylenedioxyphenylcarboxylic acid in toluene, triethylamine (0.27 mL, 1.95 mmol) and diphenylphosphoryl azide (DPPA) (0.32 mL, 1.5 mmol) were added. The reaction mixture was stirred at 60 0 C for 2 hours, then 2- (250 mg, 1.5 mmol) was added. The reaction mixture was stirred at 100 0 C for 18 hours. After the reaction mixture was cooled to room temperature, it was partitioned between 5 citric acid and ethyl acetate. The organic layer was separated and the aqueous layer was extracted three times with ethyl acetate. The organic extracts were combined, dried over MgSO4, filtered and concentrated under reduced pressure. Chromatography of the resulting solid on silica gel (hexane ethyl acetate; 5:1) gave product (200 mg, 42 EI-MS m/z 318 Example 42 Synthesis of N-(2-hydroxy 4-nitro phenyl) N'-(2-methoxy 3-chloro phenyl) urea The urea was prepared from 2-hydroxy 4-nitro aniline(308 mg, 2 mmol) and 2chloro 3-methoxy phenyl isocyanate(2 mmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.48 g, EI-MS m/z 338(M+H) Example 43 -43- WO 00/76495 PCT/US00/16499 Synthesis of N-(2-hdrox 4-nitro phenvl) N'-(2-methl phenvyl) urea The urea was prepared from 2-hydroxy 4-nitro aniline(308 mg, 2 mmol) and 2methyl phenyl isocyanate(2 mmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.38 g, EI-MS m/z 288(M+H) Example 44 Synthesis of N(bis (2-hydroxy 4-nitro phenyl) N'-(dianisdine) diurea The urea was prepared from 2-hydroxy 4-nitro aniline(616 mg, 4 mmol) and dianidisdine diisocyanate(2 mmol) by general Method B(except 2 equiv. of 4-nitro 2hydroxy aniline was used instead of 1 equiv.). The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound( 0.08 g, 6%).EI-MS m/z 605(M+H) Example Synthesis of 4-methylene bis(N-(2-chloro phenvl) N'-(2-hdrox 4-nitro phenyl) urea) The urea was prepared from 2-hydroxy 4-nitro aniline(616 mg, 4 mmol) and 4methylene bis(N-(2-chloro phenyl) diisocyanate(2 mmol) by general Method B(except 2 equiv. of 4-nitro 2-hydroxy aniline was used instead of lequiv.). The product was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the title compound(0.10 g, EI-MS m/z 627(M+H) Example 46 Synthesis of N-[2-hdrox 4-(benzylamino)carbonvl phenvll-N'-(2-bromophenl)urea a) Synthesis of N-(2-hydroxy 4-carboxylate phenyl) N'-(2-bromo phenyl) urea The urea was prepared from 3-hydroxy 4-amino benzoic acid (3.69 g, 24 mmol) and 2-bromo phenyl isocyanate(24 mmol) by general Method B. It was purified by dilution of the DMF solution with methylene chloride and precipitation with g, EI-MS m/z 351(M+H)+ b) Preparation of N-[4-(benzylamino)carbonyl-2-hydroxyphenyl]-N'-(2bromophenyl)urea To a solution of the N-(2-hydroxy 4-carboxylate phenyl) N'-(2-bromo phenyl) urea (200 mg, 0.58 mmol) in DMF (15 mL), EDC (121.9 mg, 0.58 mmol), HOBT (156.6 mg, 11.6 mmol) were added The reaction mixture was stirred at room temperature for 16 hours. Then the benzyl amine (123 mg, 11.6 mmol) was added. The reaction mixture was stirred at same temperature for 24 hours. Then the reaction mixture was partitioned between water and ethyl acetate. The organic layer was separated and the aqueous layer was extracted three times with ethyl acetate. The organic extracts were combined, dried over MgSO 4 filtered and concentrated under reduced pressure. Chromatography of the resulting solid on silica gel (hexane ethyl acetate; 1:1) gave benzylamino product (500 mg, 65 EI-MS m/z 441 -44- WO 00/76495 WO 0076495PCT/USOO/1 6499 Example 47 Synthesis of N-(2-hydroxy 4-nitro phenyl) N'-(2-phenoxy p~henvi) urea The urea was synthesized by the treatment of 2-phenoxyphenyl carboxylic acid(2 minol,) with diphenyl phosphoryl azide(0.475 mL) and triethyl amnine(. 14 mb) in DMF at 80 'C after 24 hours the 2-amino. 5-nitro phenol (1 equiv.) was added. The reaction was heated for 24 hours at 80*C. The reaction product was oiled out with hexane. The residue was dissolved in methanol and the solid was precipitated out with water.(l mg, 24%) El-MS m/z 364(M-H) Example 48 Synithesis of N-(2-hydroxy-4-fluoro lphenyl) N-(2-bromo phenyl) urea a) Synthesis of 2-hydroxy 4-fluoroaniline 3-fluoro 6-nitro, phenol (2 g, 11I mmol) was treated with lO%PdIC(1 g) at 23 0

C.

The reaction mixture was flushed with hydrogen gas and the reaction was allowed to stir 12 h before it was filtered through celite. The filtrate was concentrated in vacuo to afford the title compound (1.4 g, El-MS m/z 169(M+H)+ b) Synthesis of N-(2-hydroxy-4-fluoro phenyl) N'-(2-bromo phenyl) urea The urea was prepared from 2-hydroxy 4-fluoro aniline(254 mg, 2 mmol) and 2-bromo phenyl isocyanate by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane(173 mg, El-MS mhz 325 Example 49 Synthesis of 2-hydroxy 3,4-difluoro phenyl) N-(2-bromo pRhenyl) urea a) Synthesis of 2-hydroxy 3,4-difluoro aniline 2,3 difluoro 6-nitro phenol (2 g, 11I mmol) was treated with 10%Pd/C( 1 g) at 23 0 C. The reaction mixture was flushed with hydrogen gas and the reaction was allowed to stir 12 h before it was filtered through celite. The filtrate was concentrated in vacuc to afforded the title compound (1.6 g, El-MS nitz l46(M+H) b)Synthesis of N-(2-hydroxy 3,4-difluoro phenyl) N'-(2-bromno phenyl) urea The urea was prepared from 2-hydroxy 3,4-difluoro aniline(0.290 g, 2 mmol) and 2-bromo, phenyl isocyanate(0.4 g) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane(0.254 g, El-MS m/z 343(M+H)+ Example Synithesis of N-(2-hydroxy 3-napthl) N4-2-bromo phenyl) urea The urea was prepared from 3-amino 2-hydroxy napthalene(0.320 g, 2 mmol) and 2-bromo, phenyl isocyanate(.40 g) by general Method B. It was purified by dilution of the with methylene chloride and precipitation with hexane(O.339, 47%).EI-MS mhz 357(M+H)+ Example 51 .1 WO OOf76495 WO 0076495PCTIUSOOI16499 Synthesis of N-(2-hvdroxy 4-phenyl phenyl) N'-(-bromo phenyi) urea a) Synthesis of 2-nitro 5-phenyl phenol A solution of 3-phenyl phenol(2 g, 11 mniol) in acetic acid was treated with concentrated nitric acid drop-wise until all starting material was consumed. The solution was partitioned between water and methylene chloride. The organic phase was separated and the aqueous phase was extracted once more with methylene chloride.

The combined organic phases were dried over sodium sulfate, filtered and concentrated in vacuc. The residue was purified by silica gel chromatography(ethyl acetate/hexane) to afford desired (1.2 g, 50%).

1 H NMR (CDC1 3 8 10.65(s, 1H), 8.18 1H, J 10.0 Hz), 7.65 2H, J 6.0 Hz), 7.49 (in, 3H), 7.34 IlH), 7. 10 IlH, J=lI0.OHz).

b)Synthesis of 2-amino 5-phenyl phenol A solution of 2-nitro 5-phenyl phenol( 1.2 g, 5.5 inmol) in methanol was treated with 10% PdIC( I.2g). The reaction mixture was flushed with hydrogen and allowed to stir overnight. The reaction mixture was filtered through celite and the filtrate was concentrated in vacuo to afford desired (1.01 g, 98%).EI-MS m/z 186(M+H)+ c)Synthesis of N-(2-hydroxy 4-phenyl phenyl) N'-(2-brorno phenyl) urea The urea was prepared from 2-hydroxy 4-phenyl aniline(0. 185 g, I mmol) and 2-bromo phenyl isocyanate(0. 198 g) by general Method B. It was purified by dilution of the DMF solution with methylene chloride and precipitation with hexane(2 15 mg, 56%).EI-MS m/z 383(M+H)+ Example 52 Synthesis of N-(2-hvdroxy 4-methyl phenyl) N'-(2-bromo Rhenyl) urea The urea was prepared from 2-hydroxy 4-methyl aniline(.274g, 2 inmol) and 2bromo phenyl isocyanate(O.40 g,2 mmol) by general Method B. It was purified by dilution of the DMF solution with methylene chloride and precipitation with hexane(249 mng, El-MS mn/z 319(M-H) Example 53 Synthesis of N(2-hydroxy 4-nitro phenyl) N'-(2-Rhenylarnino p2henyl) urea The urea was synthesized by the treatment of 2-tertbutyldimethylsilyloxy 4-nitro phenyl isocyanate(example 9a, 0.419g, 1.5 equiv.) with 2-anilino aniline(0. 184 g, 1 equiv.) in THE overnight at 40 The desired product precipitated out of the reaction mg, El-MS m/z 365(M+H)+ Example 54 Syn~thesis of N-(2-hydroxy 3-carboxylate Rhenyl) N-(2-bromno Phenyl) urea The urea was prepared from 2-hydroxy 3-amino benzoic acid(300 mg, 2 inmol) and 2-bromo phenyl isocyanate by general Method B. It was purified by dilution of the DMF solution with methylene chloride and precipitation with hexane(.287 g, 41 El- MS mlz 351(M-.H)+ Example -46 WO 00/76495 PCT/US00/16499 Synthesis of N(2-sulfhydryl 4-bromo phenyl) N'-(2-bromo phenvl) ureaa) Synthesis of 2-amino 6-bromo thiazole 4-Bromo aniline(4.3 g, 25 mmol, 1 equiv.) and ammonium thiocyanate(5.7 g, 3equiv.) was dissolved in acetic acid and treated with bromine(4 g, lequiv.) at room temperature. After complete disappearance of starting material the reaction mixture was poured into water and the solid was collected. The solid was used in the next step without any purification(3.6 g, EI-MS m/z 229(M+H)+ b) Synthesis of bis (3-bromo 6-amino phenyl) disulfide The 2-amino 6-bromo thiazole hydrobromide (500 mg, 1.6 mmol) in water(5mL) was treated with KOH (2.5 g) was heated at reflux for 8 h at reflux. The reaction mixture was then acidified to ph 4 with acetic acid and extracted with methylene chloride. The methylene chloride mixture was concentrated in vacuo. The residue was dissolved in DMSO and treated with 12. After stirring overnight at room temperature the reaction mixture was partitioned between methylene chloride and saturated sodium bicarbonate. The methylene chloride layer was dried with magnesium sulfate and concentrated in vacuo. The resulting solid was purified by flash chromatography(ethyl acetate/hexane) to afford the title compound (230 mg, EI- MS m/z 405(M+H)+ c)Synthesis of N(2-sulfhydryl 4-bromo phenyl) N'-(2-bromo phenyl) urea A solution of (3-bromo 6-amino phenyl) disulfide(201 mg, .5 mmol) in DMF was treated with 2-bromo phenyl isocyanate(l mmol) at 80 oC overnight. The reaction mixture was diluted with methylene chloride and a solid was precipitated out with hexane. The solution was dissolved in MeOH and treated with NaBH 4 After gas evolution ceased the reaction mixture was carefully acidified with IN HCI and the resulting solid was filtered(52 mg, EI-MS m/z 399 (M-H) Example 56 Synthesis of N-(2-hydroxy 4-nitro phenyl) N'-(2-iodo phenyl) urea The urea was synthesized by the treatment of 2-iodo benzoic acid(5 g, mmol) with diphenyl phosphoryl azide(l equiv.) and triethyl amine (1 equiv.) in DMF at 80 °C after gas evolution ceased the 5-nitro 2-amino phenol (3 g, 1 equiv.) was added. The reaction was heated overnight at 80 0 C. The reaction mixture was purified by filtering through a plug of silica with methylene chloride. The desired product was then precipitated out with hexane. Filtering afforded the desired compound(1.08 g, EI-MS m/z 398(M-H) Example 57 Synthesis of N-(2-hydroxy 4-nitro phenyl) N'-(2-bromo phenyl) thiourea The thiourea was synthesized by treatment of the 2-tert-butyldimethylsilyloxy 4-nitro phenyl thioisocyanate(see example 9a 3.73 mmol) with 2-bromo aniline in toluene at 88 0 C over 36 h. The solution was concentrated and the residue was purified -47- .1 WO O0n6495 PCT/US00/16499 by flash chromatography(EtOAc/Hexane). The fraction slightly lower rf than starting material contained the desired compound. This fraction was concentrated and then treated with triethyl amine hydrofluoride in acetonitrile for 15 minutes at 23 The reaction mixture was then concentrated in vacuo and the residue was purified by flash chromatography (ethyl actate/hexanes) to give N-(2-hydroxy 4-nitro phenyl) bromo phenyl) thiourea(52 mg, EI-MS m/z 369(M+H)+ Example 58 Synthesis of N-(2-phenylsulfamido) 4-cyanophenyl N'-(2-bromo phenyl) urea a) Synthesis of 3-(phenylsulfamido) benzonitrile The of 3-(phenylsulfamido) benzonitrile was synthesized from the 3-cyano aniline (23.9 g, .2 mol) by Method C. It was purified by recrystalization from EtOH(15.8 g, 31%).1H NMR (CDC1 3 8 7.95(s, 1H), 7.84 2H, J 8.0 Hz), 7.59 (t, 1H, J 8.0 Hz), 7.45 2H), 7.35 4H).

b) Synthesis of 3-(phenylsulfamido) 4-nitro benzonitrile The 3-(phenylsulfamido) benzonitrile(10 g, 39 mmol) was dissolved in acetic anhydride and treated with concentrated nitric acid dropwise at room temperature until all the starting material had been consumed. The reaction mixture was then quenched by carefully pouring it into sodium bicarbonate and left to sit until all gas evolution had subsided. It was then partitioned between methylene chloride and water. The organic layer was dried over sodium sulfate and filtered. The reaction mixture was concentrated in vacuo, absorbed onto silica gel and purified by column chromatography(methylene chloride/hexane) to afford the title compound (1.7g, EI-MS m/z 302(M+H)+ c) Synthesis of 3-(phenylsulfamido) 4-amino benzonitrile The 3-(phenylsulfamido) 4-nitro benzonitrile(1.5 g, 4.9 mmol) was treated with tin chloride dihydrate in EtOH at 80 °C for 12h. It was then concentrated and flushed through a plug of silica gel with 5% methanol/methylene chloride. The filtrate was absorbed onto silica gel and purified by flash chromatography(ethyl acetate/hexane) to afford the title compound (0.9 g, EI-MS m/z 274 d) Synthesis of N-(2-phenylsulfamido) 4-cyanophenyl N'-(2-bromo phenyl) urea The urea was synthesized from 2-(phenylsulfamido) 4-amino benzonitrile(77 mg, 0.28 mmol) and 2-bromo phenyl isocyanate by general Method C. It was purified by column chromatography(ethyl acetate/hexane) to afford the title compound (30 mg, EI-MS m/z 469(M-H) Example 59 Synthesis of N-(2-(phenyl sulfamido) phenyl) N'-(2-bromo phenyl) urea a) Synthesis of phenyl sulfamido) aniline -48- WO ODn6495 WOOO/6495PCT/USOOfl6499 The sulfonamnide was synthesized from phenyl sulfonyl chloride(0.01 mmol) and o-phenylene diamnine(1.08 g, 0.01 nimol) by general.Method C. It was purified by recrystallization from EtOH( 1.0 g, 40%).EI-MS m/z 249(M+H)+ b) Synthesis of N-(2-(phenyl sulfamido) phenyl) N'-(2-bromno phenyl) urea and 2-bromo phenyl isocyanate, by general Method B. The urea was synthesized 2-(phenyl sulfamido) aniline(I 1 nmol). It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.234 g, 52%).EI-MS m/z 446(M+H)+ Example Synithesis of styrvi sulfamido) phenvi' N'-2-bromo p2henyi) urea a) Synthesis of styryl sulfainido) aniline The sulfonamide was synthesized from styryl sulfonyl chloride(0.0 1 mol) and ophenylene diamine(0.0 1 mol) by general Method C. It was purified by recrystallization from EtOH(1.2 g, 60%)EI-MS m/z 199(M+H)+.

b) Synthesis of N-(2-(styryl sulfamido) phenyl) N'-(2-bromo phenyl) urea The urea was synthesized from 2-(syryl sulfamido) aniline( 1 nmol) and 2bromno phenyl isocyanate( 1 nmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(O.309 g, El-MS m/z 472(M+H)+ Example 61 Synthesis of 2-r(3,4 dimethoxyvphenyl)sulfonyl aminol phenyl) NV-2-bromo Phenyl) urea a) Synthesis of 2-[(3,4-dimethoxyphenyl)sulfonyl arninoiphenyl aniline The sulfonamide was synthesized from 3,4-dimethoxy phenyl sulfonyl chloride(0.01 mol) and o-phenylene diamine by general Method C. It was purified by recrystallization from EtOH(0.65 g, 2 El-MS m/z 309(M+H)+.

b) Synthesis of 2-[(3,4-.dimethoxyphenyl)sulfonylamino] phenyl) N!-(2-bromo phenyl) urea The urea was synthesized from 2-[(3,4-dimethoxyphenyl)sulfonyI aminoiphenyl aniline( 1 mmol) and 2-bromo phenyl isocyanate by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.062 g, 12%).EI-MS ni/z 504(M-H) Example 62 Synthesis of N-(2-r(4-acetamidophenyl)sulfonylamino1 phenyl) NV-2-bromo phenyl) urea a) Synthesis of 2-[(4-acetamidophenyl)sulfonylaniino]phenyI aniline The sulfonamride was synthesized from 4-acetanudophenyl sulfonyl chloride(0.0l mol) and o-phenylene diamine(0.01 mol) by general Method C. It was purified by recrystallization from EtOH(I.27 g,40%)EI-MS m/z 304(M-H) -49 WO 00/76495 WO 0076495PCTI/USOO/16499 b) Synthesis of N-(2-[(4-acetamidophenylsulfonyl)amino] phenyl) N'-(2-bromo, phenyl) urea The urea was synthesized from 2-[(4-acetamidophenyl)sulfonylamino]phenyl aniline( 1 mmol) and 2-bromo phenyl isocyanate( 1 nmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.12 g, El-MS m/z 501(M-H) Example 63 Synithesis of N-(2-(2-thiophene sulfamido phenyl) N!-(2-bromo phenyl) urea a) Synthesis of 2-(2-thiophene sulfainido) aniline The sulfonamide was synthesized from 2-thiophene sulfonyl chloride(01 mol) and o-phenylene diamine(0.0l mol) by general Method C. It was purified by recrystallization. from EtQH(0.77 g, El-MS rn/z 255 b) Synthesis of N-(2-(2-thiophene sulfonyl amino phenyl) N'-(2-bromo, phenyl) urea The urea was synthesized from 2-thiophene sulfonyl amino) aniline( 1 nimol) and 2-bromo phenyl isocyanate( 1 nmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.29 g, El-MS m/z 450(M-H) Example 64 Synthesis of N-(2-(3-tolyl sulfonyi amino phenyl) N'-2-bromo phenyl) urea a) Synthesis of 3-tolyl sulfonyl amino) aniline The sulfonam-ide was synthesized from 3-tolyl sulfonyl chloride(0.0 I mol) and o-phenylene diamine(0.01 mol) by general Method C. It was purified by recrystallization from EtOH(0.73g, 28%).EI-MS m/z 263 b) Synthesis of N-(2-((3-tolyl sulfonyl amino) phenyl) N'.(2-bromo phenyl) urea The urea was synthesized from 2-(3-tolyl sulfonyl amino) aniline( 1 imol) and 2-bromo phenyl isocyanate( 1 nmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. It was recrysallized two times with EtOH(25 mig, El-MS m/z 458(M-H) Example Synthesis of N-(2-(8-quinolinyl sulfonyl amino) phenyl) N'-2-bromo phenyl) urea a) Synthesis of 2-(8-quinolinyl sulfonyl amino) aniline The sulfonamide was synthesized from 8-quinolinyl sulfonyl chloride(0.0 1 mol) and o-phenylene diamine(0.0l mol) by general Method C. It was purified by recrystallization from EtOH(O.82 g, 27%).EI-MS m/z 300 b) Synthesis of (8-quinolinyl) sulfonyl amino) phenyl) N'-(2-bromo phenyl) urea 50 I WO 00/76495 PCT/US00/16499 The urea was synthesized from 2-((8-quinolinyl) sulfonyl amino) aniline(l mmol) and 2-bromo phenyl isocyanate(1 mmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.23 g, 46%).EI-MS m/z 495(M-H).

Example 66 Synthesis of benzyl sulfonvl amino) phenyl) N'-(2-bromo phenvl) urea a) Synthesis of 2-(benzyl sulfonyl amino) aniline The sulfonamide was synthesized from benzyl sulfonyl chloride(0.01 mol) and o-phenylene diamine(0.01 mol) by general Method C. It was purified by recrystallization from EtOH(0.87g, EI-MS m/z 263(M+H)+.

b) Synthesis of benzyl sulfonyl amino) phenyl) N'-(2-bromo phenyl) urea The urea was synthesized from benzyl sulfonyl amino) aniline(l mmol) and 2-bromo phenyl isocyanate(lmmol) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane. Filtering afforded the desired compound(0.11 g, EI-MS m/z 460 Example 67 Synthesis of N-(2-hydroxy-4-azidophenvl)-N'-(2-methoxyphenyl)urea a) Synthesis of N-(2-hydroxy-4-aminophenyl)-N'-(2-methoxyphenyl)urea To a solution of N-(2-hydroxy-4-nitro phenyl)-N'-(2-methoxyphenyl)urea(l.0 g, example 15) in methanol, palladium (on activated carbon, 10%) (100 mg) was added.

Then the reaction mixture was hydrogenated under a hydrogen balloon for 18 hours.

The solid was filtered off by celite and washed three times by methanol. The filtrate was concentrated under reduced pressure to give amine compound (0.8 g, EI-MS m/z 274 (M+H) b) Synthesis of N-(2-hydroxy-4-azidophenyl)-N'-(2-methoxyphenyl)urea The N-(2-hydroxy-4-aminophenyl)-N'-(2-methoxyphenyl)urea (300 mg, 1.17 mmol) was added to HCI/H 2 0 (1.17 mL/2.34 mL), cooled to 0°C. Sodium nitrite (80.7 mg, 1.17 mmol) was added to the reaction mixture. The reaction mixture was stirred at 0°C for 30 minutes. The sodium azide (76 mg, 1.17 mmol) was added to reaction mixture and it was warmed to room temperature. The reaction mixture was stirred at room temperature for 18 hours. Then it was extracted with three times by ethyl acetate.

The organic extracts were combined, dried over MgSO 4 filtered and concentrated under reduced pressure and chromatography of the resulting solid on silica gel (hexane :ethyl acetate; 5:1) gave product (125 mg, EI-MS m/z 300 Example 68 Preparation of N-[2-hydroxy-5-cvanophenyll-N'-[2-bromophenyl urea a) Preparation of 2-amino-4-cyanophenol -51- WO 00/76495 PCT/US00/16499 To a solution of 2-nitro-4-cyanophenol(10g, 61mmol) in methanol(250mL) was added 10% Pd/C The mixture was flushed with argon, then hydrogen was bubbled through the solution for 10 min. and a hydrogen atmosphere was maintained at balloon pressure overnight. The mixture was filtered through celite and the celite was washed with methanol. The solvent was evaporated and chromatography of the resulting solid on silica gel (5%MeOH/ CH 2 C12) gave the desired product(8.0 g, 97%).

'H NMR (CD 3 OD): 6 6.96 1H), 6.90 (dd, 1H), 6.77 1H).

b) Preparation of N-[2-hydroxy-5-cyanophenyl]-N'-[2-bromophenyl] urea N-[2-hydroxy-5-cyanophenyl]-N'-[2-bromophenyl] urea was prepared from 2amino-4-cyanophenol(268mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (540mg,81%). 'H NMR (CD 3 0D): 8 8.10 1H), 7.87 (d, 1H), 7.43 1H), 7.20 1H), 7.09 1H), 6.86 1H), 6.77 IH).

Example 69 Preparation of N-f2-hvdroxy-3-fluorophenyll-N'-[2-bromophenvll urea a) Preparation of 2-amino-3-fluorophenol To a solution of 2-nitro-3-fluorophenol(lg, 6.4mmol) in methanol(250mL) was added 10% Pd/C The mixture was flushed with argon, then hydrogen was bubbled through the solution for 10 min. and a hydrogen atmosphere was maintained at balloon pressure overnight. The mixture was filtered through celite and the celite was washed with methanol. The solvent was evaporated and chromatography of the resulting solid on silica gel (5%MeOH/ CH 2 C12) gave the desired product(650 mg, 80.2 'H NMR (CD3OD): 5 6.41-6.17 3H).

b) Preparation of N-[2-hydroxy-3-fluorophenyl]-N'-[2-bromophenyl] urea N-[2-Hydroxy-3-fluorophenyl]-N'-[2-bromo phenyl] urea was prepared from 2amino-3-fluorophenol (254mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (500 mg, 'H NMR (CD30D): 5 8.05 1H), 7.50 1H), 7.26 1H), 7.18 1H), 6.92 1H), 6.86-6.68 2H).

Example Preparation of N-2-[1-hydroxvfluorenel-N'[2-bromophenvll urea a) Preparation of 2-amino-1 -hydroxyfluorene To a solution of 1-hydroxy-2-nitrofluorene(250 mg, 1.23mmol) in methanol(250mL) was added 10% Pd/C The mixture was flushed with argon, then hydrogen was bubbled through the solution for 10 min. and a hydrogen atmosphere was maintained at balloon pressure overnight. The mixture was filtered through celite and the celite was washed with methanol. The solvent was evaporated and chromatography of the resulting solid on silica gel (5%MeOH/ CH 2 Cl 2 gave the -52- WO 00/76495 WO 0076495PCrIUSOO/16499 desired product(171 mg, 81.2 'H NMR (CD 3 OD): 6 7.60 1H), 7.47 lH), 7.28 ILH), 7. 18 (in, 2H), 6.82 I1H), 3.76 2H).

b) Preparation of I-hydroxyfluorene]-N'-[2-bromophenyl] urea N-2-[1I-hydroxyfluorenell-N'-[2-bromo phenyl] urea was prepared from 2amino-i- hydroxyfluorene (170mg, 0.86 rumol) according to the procedure in General Method B. The product was purified by chromatography of the resulting solid on silica gel (30%EtOAc/ Hexane) to give the desired product (300mg, 'H NMR

(CD

3 CI): 8 8.04 1H), 7.66 LH), 7.49 2H), 7.35-7.20 (in, 4H), 7.09 IH), 6.90 IlH).

Example 71 Preparation of N-3-r2-hvdroxy-9. l0-anthraciuinonyll-N'-r2-bromophenyl1 urea N-3- [2-Hydroxy-9,10-anthraquinonyl]-N-[2-bromophenyl urea was prepared from 2hydroxy-3-aminoanthraquinone(480mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (610mg, 'H NMR (CD 3 OD): 8 8.93 8.12 (mn, 2H), 8.02 IH), 7.77 (in, 2H), 7.61 LH), 7.52 lH), 7.38 (t, I 7.05 IlH).

Example 72 Preparation of N-[2-hvdroxv-3-fluoro-5-bromophbenyll-N'.-f2-bromoTphenylI ureaa) Preparation of 2-amrino-6-fluoro-4-bromophenol A mixture of 4-bromo-2-fluoro 6-nitrophenol(lg, 4.2mmol) and tin (111) chloride (4.78 g, 21 .2mmol) in ethanol(5OmL) was heated at 80*C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOI CH 2

CI

2 gave the desired product(7 mng, 82 NMR (CD 3 OD): a 6.5 1-6.40 (mn, 2H).

b) Preparation of N-[2-hydroxy-3-fluoro-5-bromophenyl]-N'-[2-bronophenyl] urea N-[2-hydroxy-3-fluoro-5-bromophenyl]-N-[2-bromophenyI urea was prepared from 2-arnino-6-fluoro-4-bromophenol (254mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride! hexane(1/20) and filtering. (500 ing, 'HNMR (CD 3 OD): a 7.98 (s, IH), 7.91 1H), 7.60 11H), 7.33 IH), 7.00 111), 6.94 1H).

Example 73 PrEparation of N-[2-hydroxy-3-chlorophenylI-N'-f2-bromophenyll urea a) Preparation of 2-amrino-3-chlorophenol -53- WO 00/76495 PCT/US00/16499 A mixture of 3-chloro-2-nitrophenol(250 mg, 1.4mmol) and tin (II) chloride (1.2 g, 5.3mmol) in ethanol(50mL) was heated at 80 0 C under argon. After 2 hours, the starting material has disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2

C

2 gave the desired product(143 mg, 69 'H NMR (CD30D): 8 6.75 6.70 1H), 6.65 1H).

b) Preparation of N-[2-hydroxy-3-chlorophenyl]-N'-[2-bromophenyl] urea N-[2-hydroxy-3-chlorophenyl]-N'-[2-bromophenyl] urea was prepared from 2amino-3-chlorophenol (143mg, 1.00 mmol) according to the procedure in General Method B. The product was purified by chromatography of the resulting solid on silica gel (30%EtOAc/ Hexane) to give the desired product(195mg, 'H NMR 8 7.81 1H), 7.68 1H), 7.47 1H), 7.20 1H), 6.90 2H), 6.70 (t, 1H).

Example 74 Preparation of N-[2-hydroxy-3-trifluoromethvlphenyll-N'-12-bromophenvl ureaa) Preparation of 2-nitro-6-trifluoromethylphenol 2-trifluoromethylphenol (3.00g, 18.5mmol) was dissolved in methylene chloride(40mL) followed by the addition of sodium nitrate (1.73g, 20.4mmol). The addition of sulfuric acid (23 mL/ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(1.84 g, 47 'H NMR (CD 3

COCD

3 8 8.35 7.95 1H), 7.13 1H).

b) Preparation of 2-amino-6- trifluoromethylphenol A mixture of 6-trifluoromethyl-2-nitrophenol(1.84 g, 8.67mmol) and tin (II) chloride (6.0 g, 26.2 mmol) in ethanol(150mL) was heated at 80°C under argon. After 2 hours, the starting material has disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 Cl 2 gave the desired product(l.35 g, 88 'H NMR (CD30D): 6 6.93 1H), 6.82 1H), 6.78 1H).

c) Preparation of N-[2-hydroxy-3- trifluoromethylphenyl]-N'-[2-bromophenyl] urea -54- .1 WO 00/76495 WO 0076495PCTIUSOOII 6499 N-[2-hydroxy-3-trifluoromethylphenyl]-N'-[2-bromophenyll urea was prepared from 2-amino-6-trifluoromethylpbenol (280mg, 1.60 mmnol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (390mg, 1 HNMR (CD 3 OD): 8 7.99 (d, 1H), 7.60 1H), 7.58 1H), 7.34 IH), 7.30 IN), 7.00 IN), 6.96 1H).

Example Preparation of N4[3,4 cliphenyl-2-hydroxyphenyll-N'-[2-bromophenl1 urea N-[3,4 diphenyl-2-hydroxyphenyl]-N'-[2-bromophenyl] urea was prepared from 2-amino-5,6 diphenyiphenol (50mg, 0. 19 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride! hexane(1120) and filtering (6 1mg, 1 HNMR (CD 3 OD): 5 7.97 1H), 7.66 (d, 1H), 7.58 IH), 7.31 IH), 7.25-7.00 (in, 1 iN), 6.91 IH).

Example 76 Preparation of N-[2-hvdroxv-3-glycinemethylesterearbonvlphenvl 1-N'-f2-bromophenvlI urea N-[2-hydroxy-3-glycinemethylestercarbonylphenyl]-N-[2-bromophenylI urea was prepared from 6-glycinemethylestercarbonyl-2-aminophenol (50mg, 0.22 mmol), purchased from the University of New Hampshire, according to the procedure in General Method B. The product was purified by precipitation from methylene chloride! hexane(l/20) and filtering (65mg, 'H NMR (CD 3 OD): 8 8.14 LH), 7.96 (d, IH), 7.49 IH), 7.24 2H), 6.89 (dd, lH), 6.81 lH), 4. 10 3.74 (s,3H).

Example 77 Prearation of N-r2-hydroxy-3-glycinecarbonylphenyl1-N-[2-bromolhenyl1 urea N- [2-Hydroxy-3-glycinecarbonylphenyl]-N'-[2-bromophenyl] urea was prepared from N- [2-hydroxy-3-glycinemethylestercarbonylphenyl]-N'-[2-bromophenyl] urea (50mg, 0.12 nirnol) by stirring in a 3/1 ratio of methanol/water (10 mL). Addition of 1 equiv. of lithium hydroxide was added and stirring continued until the starting material had disappeared. (45mg, The product was purified by chromatography of the resulting solid on silica gel (9/l/0.1 CH 2 Cl 2 I MeOH/ AcOH) to give the desired product(195mg, 'H NMR (CDOD): 8 8.14 iN), 7.92 IH), 7.60 IN), 7.46 1H), 7.34 1H), 7.04 1H), 6.82 1H), 3.96 (2H).

Example 78 Preparation of N-[2-hvdroxy-3,5-dichlorop~henyll-N'-r2-bromophenylI urea a) Preparation of 2-amino-4,6-dichlorophenol A mixture of 4,6-dichloro-2-nitrophenol( 1 g, 4.8mmol) and tin (II) chloride (3.2 g, 14.4mmol) in etbanol(50miL) was heated at 80'C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, WO 00/76495 WO 0076495PCTIUSOO/1 6499 dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2

CI

2 gave the desired product(685 mg, 'H NMR (CD 3 OD): 8 6.75 6.61 III).

b) Preparation of N-[2-hydroxy-3,5-dichlorophenyl]-N'-[2-bromophenyl] urea N-[2-Hydroxy-3,5-dichlorophenyl]-N'-[2-broinophenyl urea was prepared from 2-amino-4,6-dichlorophenol (143mg, 1.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1120) and filtering. (660mg, 'H NMR (CDOD): 8 7.96 (s, IH), 7.89 111), 7.60 1H), 7.35 1H), 7.00 lH), 6.95 (dd, 1H).

Example 79 Preparation of N-[2-hydroxy-3-nitrophenyll-N'-[2-bromophenylI ureaN-[2-Hydroxy-3nitrophenyl]-N-12-bromophenyl] urea was prepared from 2-hydroxy-3-nitroaniline (1.25g, 8.1 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane( 1/20) and filtering. (2.4g, 'H NMR (CD 3 OD): 5 8.45 1H), 7.94 1H), 7.78 IH), 7.60 11-), 7.35 11-1), 7.01 (in, 2H).

Example Preparation of N-[2-hydroxy-4-naphthalenesulfonic acidl-N '-2-bromophenyil urea N-[2-hydroxy-4-naphthalenesulfonic acidl-N'-[2-bromophenyl] urea was prepared from 1-amiino-2-hydroxy-4-naphthalensulfonic acid (0.48g, 2.0 mmol) according to the procedure in General Method B and the addition of I l- of triethylanune. The product was purified by precipitation from methylene chloride/ and filtering. (690 mg, H NMR (CD 3 OD): 8 8.14 11H), 8.04 1H), 7.98 (in, 2H), 7.6 1-7.55 (in, 3H), 7.43 1H1), 6.98 1H).

Example 81 Preparation of N-r2-hydroxy-5-nahthalenesulfonic acidl-N-r2-bromophenyll urea N-3-[2-hydroxy-5-naphthalensulfonic acid]-N'-[2-bromophenyl] urea was prepared from 2-aniino-3-hydroxy-6-naphthalensulfonic acid (0.48g, 2.0 mmol) according to the procedure in General Method B and the addition of iniL of triethylamine. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (715 mg, H NMR (CD 3 QD): 5 8.09 LH), 7.96 111), 7.65-7.48 (in, 3H), 7.36 IH), 7.25 IH), 7.04 (in, 2H).

Example 82 Preparation of N-[2-hydroxy-3,4-dichlorophenyll -N'-[2-bromophenyl1 urea a) Preparation of 2-nitro-5,6 dichlorophenol 2.3-dichiorophenol (3.26g, 20ninol) was dissolved in methylene chloride(4OmL) followed by the addition of sodium nitrate (1 .88g, 22mmol). The addition of sulfuric acid (20mL/ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, -56- WO 00/76495 PCT/US00/16499 the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgSO4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(1.8 g, 44 'H NMR (CD3COCD 3 8 8.04 7.15 1H).

b) Preparation of 2-amino-5,6 dichlorophenol A mixture of 5,6-dichloro-2-nitrophenol(1.8 g, 8.7mmol) and tin (II) chloride (5.8 g, 26.1mmol) in ethanol(50mL) was heated at 80°C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C1 2 gave the desired product(1.4 mg, 90 'H NMR (CD 3 OD): 8 6.71 1H), 6.45 1H).

c) Preparation of N-[2-hydroxy-3,4-dichlorophenyl]-N'-[2-bromophenyl] urea N-[2-Hydroxy-3,4-dichlorophenyl]-N'-[2-bromophenyl] urea was prepared from 2-amino-5,6-dichlorophenol (350mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(l/20) and filtering. (670mg, 'H NMR (CD30D): 5 7.90 (d, 1H), 7.85 1H), 7.59 1H), 7.31 1H), 6.99 1H), 6.96 (1H).

Example 83 Preparation of N-r2-hvdroxv-3-cvanophenvll-N'-r2-bromophenyll urea a) Preparation of 2-nitro-6-cyanophenol 2-cyanophenol (2.38g, 20mmol) was dissolved in methylene followed by the addition of sodium nitrate (1.88g, 22mmol). The addition of sulfuric acid (20mL/ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water. The organic layer was dried over MgSO4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(1.4 g, 42 'H NMR (CD3COCD 3 8 8.47 8.15 1H), 7.30 1H).

b) Preparation of 2-amino-6-cyanophenol A mixture of 6-cyano-2-nitrophenol(600 mg, 1.Ommol) and tin (II) chloride (3.2 g, 14.4mmol) in acetic acid(50mL) was heated at 80 0 C under argon. After 2 hours, the starting material has disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 Cl 2 gave the desired product(365 mg, 'H NMR (CD 3 0D): 6 6.92 1H), 6.85-6.69 (m,2H).

-57- WO 00/76495 WO 0076495PCT/USOO/16499 c) Preparation of N-[2-hydroxy-3-cyanophenylil-N'-[2-bromophenyl] urea N-[2-Hydroxy-3-cyanopheny1]-N'-[2-bromophenylI urea was prepared from 2amino-6-cyanophenol (1 34mg, 1.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (260mg, 'H NMR (CD 3 OD): 8 7.98 1H), 7.74 (d, 1H), 7.57 1H), 7.30 1H), 7.22 1H), 6.98 IH), 6.94 (1H).

Example 84 Preparation of N-[2-hydroxy-4-cyanohenvll-N'-[2-bromophenylI urea a) Preparation of 3-cyanophenol (2.38g, 20Ommol) was dissolved in methylene chloride(4OmL) followed by the addition of sodium nitrate (1.88g, 22mmol). The addition of sulfuric acid (2OmL/ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water. The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOI/ CH 2 Cl 2 gave the desired product(9 10 mg, 28 'H NMR (CD3COCD 3 58.30 7.67 7.49 lH).

b) Preparation of A mixture of 5-cyano-2-nitrophenol(250 mg, I .5mmol) and tin (II) chloride (3.2 g, 14.4mmol) in ethanol (50mbt) was heated at 80'C under argon. After 2 hours, the starting material has disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaQH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOHi/ CH 2

CI

2 gave the desired product(175 mg, 86 NMR (CDOD): 8 7.00 1H), 6.88 6.69 1H).

c) Preparation of N-[2-hydroxy-4-cyanophenyl]-N'- [2-bromophenyl] urea N-[2-Hydroxy-4-cyanophenyl]-N'-[2-bromophenylI urea was prepared from 2- (170mg, 1.27 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering (3 10Omg, 1 H NMR (CD 3 OD): 8 8.25 lH), 7.91 (d, 1H), 7.59 1H), 7.33 IH), 7.17 IH), 7.07 lH), 7.01 (lH).

Example Preparation of N-r2-hydroxv-4-cyanopbenvll-N'-rf4-methoxYvphenylI urea N-[2-Hydroxy-4-cyanophenyl]-N-[4-methoxyphenyl] urea was prepared from (60mg, 0.45 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (I10mg,86%). IH NMR (CD 3 QD): 8 8.23 lH), 7.61- 7.51 (in, 2H), 7.32 1H), 7.20 1H), 7.15 IH), 7.03 1H).

-58- WO OOn6495 WOOO/6495PCT/USOOI16499 Example 86 Preparation of N-[2-hydroxy-4-cyanophenyll-N'-[2-phenylphenyl1 urea N[2 Hydroxy-4-cyanophenyl]-N'-[2-phenylphenyl] urea was prepared from cyanophenol. (170 mg, 1.27 mmol) according to the procedure in General Method B.

The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (150mg, 'H NMR (CDOD): 5 8.20 1H), 7.73 1H), 7.5 1-7.20 (in, 8H), 7.13 IH), 7.01 (1H).

Example 87 Preparation of N-[2-hydroxy-4-cyanophenyll-N'- r2-methylphenvlI urea N-(i2-Hydroxy-4-cyanophenyl]-N'-[2-methylphenyl] urea was prepared from 2- (60mg, 0.45 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (90mg, 'H NMR (CDOD): 8 8.25 lH), 7.59 (d, 1H), 7.26-7.00 (in, 5H), 2.30 3H).

Example 88 Preparation of N-[2-hvdroxv-4-cvanop~henvll-N'- F2-trifluoromethylphenyl1 urea N- [2-Hydroxy-4-cyanophenyl]-N'-[2-trifluoromethylphenyl] urea was prepared from 2- (60mg, 0.45 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20 and filtering. (1 10mg, 'H NMR (CDOD): 8 8.25 114), 7.81 (d, I1H), 7.68 (di, I1H), 7.61 I1H), 7.32 I 7.15 (dd, I 7.09 (1 H).

Example 89 Preparation of N-f2-hydroxy-4-cyanophenyll-N'-[3-trifluoromethylphenyl] urea N- E2-hydroxy4-cyanophenyl]-N'-[3-trifluoromethylphenyl] urea was prepared from 2amino-5-cyanophenol (60mg, 0.45 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (1 14mg, 1'H NMR (CD 3 OD): 8 8.30 1H), 7.92 (s, 111), 7.60 1H), 7.47 1H), 7.29 lH), 7.18 (dd, 1H), 7.06 1H).

Example Preparation of N-[2-hydroxy-4-cyanophenyll-N'4.4-trifluoromethlphenlI urea N- [2-Hydroxy-4-cyanophenyl]-N'-[4-trifluoromethylphenyll urea was prepared from 2- (60mg, 0.45 inmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (108mg, H NMR (CD 3 OD): 8 8.31 IH), 7.68 (d, 2H), 7.59 2H), 7.20 (dd, I1H), 7.07 I H).

Example 91 Preparation of N-[2-hydroxy-3-n-propylphenyll -N'-r2-bromovhenyll urea a) Preparation of 2-nitro-6-n-propylphenol -59- WO 00/76495 PCT/USOO/16499 2-n-propylphenol (5.00g, 36.8mmol) was dissolved in methylene followed by the addition of sodium nitrate (3.43g, 40.5mmol). The addition of sulfuric acid (45mL/ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C1 2 gave the desired product(3.2 mg, 48 'H NMR (CD3COCD 3 8 7.99 7.46 dd, 1H), 6.90 1H), 2.70 2H), 1.70 2H), 1.00 3H).

b) Preparation of 2-amino-6-n-propylphenol To a solution of 2-nitro-6-n-propylphenol(2g, 11 .Ommol) in methanol(100mL) was added 10% Pd/C (200 mg). The mixture was flushed with argon, then hydrogen was bubbled through the solution for 10 min. and a hydrogen atmosphere was maintained at balloon pressure overnight. The mixture was filtered through celite and the celite was washed with methanol. The solvent was evaporated and chromatography of the resulting solid on silica gel (5%MeOH/ CH 2 Cl) gave the desired product(1.50 g, 80.2 'H NMR (CD30D): 8 6.65 2H), 6.55 1H), 2.58 2H), 1.61 2H), 0.96 3H).

c) Preparation of N-[2-hydroxy-3-n-propylphenyl]-N'-[2-bromophenyl] urea N-[2-Hydroxy-3-n-propyl phenyl]-N'-[2-bromo phenyl] urea was prepared from 2- amino-6-n-propyl phenol (302mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (640mg,92%). 'H NMR (CD 3 0D): 8 8.00 1H), 7.58 (d, 1H), 7.32 1H), 7.26 1H), 6.96 (dd, 1H), 6.89 1H), 6.78 1H).

Example 92 Preparation of N-[2-hydroxv-4-ethylphenvll-N'-[2-bromophenvll urea a) Preparation of 3-ethylphenol (5.00g, 41 mmol) was dissolved in methylene chloride(40 mL) followed by the addition of sodium nitrate (3.83g, 45 mmol). The addition of sulfuric acid (50mlJ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water. The organic layer was dried over MgSO4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 Cl 2 gave the desired product(1.7 g, 25 'H NMR (CD3COCD 3 8 8.02 6.99 6.85 1H), 2.69 2H), 1.30 (t, 3H).

b) Preparation of To a solution of 2-nitro-5-ethylphenol( Ig, 6.4mmol) in methanol(250mL) was added 10% Pd/C (100 mg). The mixture was flushed with argon, then hydrogen was WO 00/76495 PCT/US00/16499 bubbled through the solution for 10 min. and a hydrogen atmosphere was maintained at balloon pressure overnight. The mixture was filtered through celite and the celite was washed with methanol. The solvent was evaporated and chromatography of the resulting solid on silica gel (5%MeOH/ CH 2

C

2 gave the desired product(750 mg, 91 'H NMR (CD30D): 8 6.41-6.17 3H).

c) Preparation of N-[2-hydroxy-4-ethylphenyl]-N'-[2-bromophenyl] urea N-[2-Hydroxy-4-ethylphenyl]-N'-[2-bromo phenyl] urea was prepared from 2- (274mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(l/20) and filtering. (520 mg, 'H NMR (CD30D): 6 7.96 1H), 7.62 1H), 7.56 1H), 7.30 1H), 6.96 1H), 6.82 1H), 6.76 1H).

Example 93 Preparation of N-f2-hydroxy 3-phenvlaminocarbonyl phenyll-N'-2-bromophenvll urea a) Preparation of 2-nitro-6-phenylaminocarbonylphenol 2-Phenylaminocarbonylphenol (5.00g, 23 mmol) was dissolved in methylene followed by the addition of sodium nitrate (2.20g, 25.5 mmol). The addition of sulfuric acid (30mL 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgS0 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(2.50 g, 42 'H NMR (CD3COCD 3 8 8.15 8.09 (d,lH), 7.51 1H), 7.30 1H), 7.10 1H), 7.01 1H).

b) Preparation of 2-amino-6-phenylaminocarbonylphenol To a solution of 2-nitro-6-phenylaminocarbonylphenol (1g, 4.0 mmol) in methanol (250mL) was added 10% Pd/C (100 mg). The mixture was flushed with argon, then hydrogen was bubbled through the solution for 10 min. and a hydrogen atmosphere was maintained at balloon pressure overnight. The mixture was filtered through celite and the celite was washed with methanol. The solvent was evaporated and chromatography of the resulting solid on silica gel (5%MeOH/ CH 2 C1 2 gave the desired product(800 mg, 91 'H NMR (CD 3 OD): 6 7.73-7.57 2H), 7.43-7.27 3H), 7.25-7.10 1H), 6.94 1H), 6.74 1H).

c) Preparation of N-[2-hydroxy 3-phenylaminocarbonyl phenyl]-N'-[2bromophenyl] urea N-[2-hydroxy 3-Phenylaminocarbonyl phenyl]-N'-[2-bromo phenyl] urea was prepared from 2-amino-6-phenylaminocarbonylphenol (456mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (800mg,94%). 'H NMR (CD 3 0D): 'H -61 WO 00/76495 PCT/US00/16499 NMR (CD 3 0D): 8 25 1H), 7.94 1H), 7.75-7.57 4H), 7.48-7.30 3H), 7.21 1H), 7.02 (dd, 1H), 6.92 1H).

Example 94 Preparation of N-[2-hydroxv-3-cvano-4-methvlphenvl]-N'-[2-bromophenyl ureaa) Preparation of the 2-nitro 5-methyl 6-bromo phenol A solution of t-butyl amine(6.88 mL, 4.79 g, 2 equiv.) in methylene chloride was treated with bromine (1.67 mL, 5.2 g, 1 equiv.) at -20 OC. The flask was then cooled to -78 °C and the 2-nitro 5-methyl 6-bromo phenol (5 g, 1 equiv., in methylene chloride) was added drop-wise with vigorous stirring. The reaction mixture was slowly warmed to -30 OC for 1 h, then to -10 OC for 2 hours. The reaction mixture was then partitioned between methylene chloride and 5% aqueous acetic acid. The organic layer was dried over magnesium sulfate, filtered and concentrated in vacuo. The reaction mixture was purified by flash chromatography(Ethyl acetate/ hexane) to remove dibrominated species. The 2-nitro 4-bromo 5-methyl phenol was then selectively crystallized out of methylene chloride. A final silica gel column(5%ethyl acetate/ hexane) yielded desired isomer in 90% purity.(1.05 g, 1 H NMR (CDC13): 8 7.95 1H, J 10.0 Hz), 6.91 1H, J 10.0 Hz), 2.52 3H).

b) Preparation of 2-nitro-5-methyl-6-cyanophenol 2-Nitro-5-methyl-6-bromophenol (100 mg, 0.433 mmol) was dissolved in dimethyl formamide (2mL) followed by the addition of triethylamine (0.175g, 1.73 mmol). The addition of a catalytic amount dimethylamino pyridine was then made, followed by addition of copper cyanide (155mg, 1.73mmol). The mixture was allowed to stir at 80 0 C for 4 hours. The solvent was evaporated and chromatography of the resulting solid on silica gel (2%MeOH/ CH 2 Cl 2 gave the desired product (70 mg, 91 'H NMR (CD3COCD 3 8.30 7.15 2.61 3H).

c) Preparation of 2-amino-5-methyl 6-cyanophenol A mixture of 5-cyano-2-nitrophenol(70 mg, 0.39mmol) and tin (II) chloride (265 mg, 1.18mmol) in ethanol(20mL) was heated at 80 0 C under argon. After 2 hours, the starting material has disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(175 mg, 86 'H NMR (CD3OD): 8 6.87 1H), 6.75 6.32 3H).

d) Preparation of N-[2-hydroxy 3-cyano 4-methyl phenyl]-N'-[2-bromophenyl] urea N-[2-hydroxy 3-cyano 4-methyl phenyl]-N'-[2-bromophenyl] urea was prepared from 2-amino-5-methyl-6-cyano phenol (50mg, 0.34 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene -62- WO 00/76495 WO 0076495PCTIUSOO/16499 chloride/ hexane(1/20) and filtering. (70mg, 'H NMR (CD 3 OD): 587.92 I1H), 7.68 I1H), 7.59 I1H), 7.31 I 7.00 I1H), 6.62 I1H), 2.49 (3H).

Example Preparation of N-[2-hydroxy 4-Carboxyvphenyl phenyll-N'-12-bromophenyll ureaa Preparation of 4-nitro-3-hydroxybenzophenone 3-Hydroxybenzophenone (3.00g, 15. 1immol) was dissolved in methylene chloride(4OmL) followed by the addition of sodium nitrate (1 .42g, 16.7mmol). The addition of sulfuric acid (25mLI 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C1 2 gave the desired product(1. 10 g, 30 I HNMR (CD3COCD 3 8 8.25 (d,LIH), 7.86 IH), 7.71 (in, 1Ff), 7.59 7.48 1H), 7.39 (dd, 1H).

b) Preparation of 4-amino-3-hydroxybenzophenone A mixture of 4-nitro-3-hydroxybenzophenone (900 mg, 3 .7mmol) and tin (HI) chloride (2.5 g, 11 1mmol) in ethanol(5OmL) was heated at 80'C under argon. After 2 hours, the starting material has disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH-/ CH 2 C1 2 gave the desired product(685 mg, 87 I H NMR (CD3QD): 8 7.65 2H), 7.55 IH), 7.49 2H), 7.26 IlH), 7.16 (dd, 6.68 1H).

c)Preparation of N- [4-Carboxyphenyl-2-hydroxyphenyl]-N-[2-bromophenyl] urea N-[4-Carboxyphenyl-2-hydroxyphenyll-N '-[2-bromophenyl] urea was prepared from 4-amino-3-hydroxybenzophenone (3 30mg, 1.5 inmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1120) and filtering. (490mg, H NMR (CD 3 OD): 8 8.40 IlH), 8.09 IlH), 7.83 2H), 7.65-7.60 (in, 4H), 7.48 1 7.43 ILH), 7.35 7.10 (t,lH).

Example 96 Preparation of N-[2-hydroxv 3-carboxyphenyl phenvll-N'-f2-bromonhenyll ureaa) Preparation of 3-nitro-2-hydroxybenzophenone 2-Hydroxybenzophenone (3.00g, 15. Iminol) was dissolved in methylene chloride(4OmL) followed by the addition of sodium nitrate (1 .42g, 1 6.7mmol). The addition of sulfuric acid (25mIJ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

63 WO 00/76495 PCT/US00/6499 The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 Cl2) gave the desired product(1.60 g, 44 'H NMR (CD3COCD 3 6 8.30 7.86 (m,3H), 7.71 1H), 7.78 1H), 7.56 (dd 2H), 7.24 1H).

b) Preparation of 3-amino-2-hydroxybenzophenone A mixture of 3-nitro-2-hydroxybenzophenone (600 mg, 2.5mmol) and tin (II) chloride (1.7 g, 7.5mmol) in ethanol(50mL) was heated at 80 0 C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(490 mg, 92 'H NMR (CD 3 OD): 8 7.65-7.40 5H), 6.98 6.86 1H), 6.67 (t, 1H).

c)Preparation of N-[2-hydroxy 3-carboxyphenyl phenyl]-N'-[2-bromophenyl] urea N-[2-hydroxy 3-carboxyphenyl phenyl]-N'-[2-bromophenyl] urea was prepared from 3-amino-2-hydroxybenzophenone (250mg, 1.20 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(l/20) and filtering. (200mg, 'H NMR (CD30D): 8.35 1H), 7.96 1H), 7.72 2H), 7.65-7.50 4H), 7.35 1H), 7.30 1H), 7.01 (dd, 6.92 1H).

Example 97 Preparation of N-r2-hydroxy 3-benzyloxy phenvll-N'-r2-bromophenvll urea a) Preparation of 2-nitro-6-benzyloxy phenol 2-Benzyloxyphenol (5.00g, 25.0mmol) was dissolved in methylene followed by the addition of sodium nitrate (2.30g, 27.5mmol). The addition of sulfuric acid (31mL/ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2

C

2 gave the desired product(2.6 g, 43 'H NMR (CD3COCD 3 5 7.70 7.50-7.28 (m, 7.14 1H), 6.92 1H), 5.21 2H).

b)Preparation of 2-amino-6-benzyloxy phenol A mixture of 2-nitro-6-benzyloxy phenol (1.00 g, 4.10mmol) and tin (II) chloride (2.75 g, 12.2 mmol) in ethanol(150mL) was heated at 80 0 C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was -64- WO 00/76495 PCT/US00/16499 washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C1 2 gave the desired product(1.35 g, 88 'H NMR (CD30D): 57.46 2H), 7.40-7.35 6.55 1H), 6.40 1H), 5.10 2H).

b) Preparation of N-[2-hydroxy-3-benzyloxy phenyl]-N'-[2-bromophenyl] urea N-[3-benzyloxy-2-hydroxyphenyl]-N'-[2-bromophenyl] urea was prepared from 2-nitro-6-benzyloxy phenol (430mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(l/20) and filtering. (630mg, 'H NMR (CD30D): 8 7.93 1H), 7.58 (d, 1H), 7.54-7.42 3H), 7.40-7.25 4H), 7.00 1H), 6.69 2H), 5.16 2H).

Example 98 Preparation of N-3-[2-hvdroxv-5-indanonel-N'-[2-bromophenyl urea a) Preparation of 2-hydroxy-3-nitro-5-indanone 2-Hydroxy-5-indanone(3.00g, 20.0mmol) was dissolved in methylene followed by the addition of sodium nitrate (1.95g, 21.0mmol). The addition of sulfuric acid (25mL 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 Cl 2 gave the desired product(1.5 g, 39 'H NMR (CD 3

COCD

3 87.70 7.04 1H), 3.04 2H), 2.74 2H).

b) Preparation of 3-amino-2-hydroxy-5-indanone A mixture of 2-hydroxy-3-nitro-5-indanone (1.50 g, 7.80mmol) and tin (I) chloride (5.25 g, 23.3 mmol) in ethanol(150mL) was heated at 80 0 C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C2) gave the desired product(1.00 g, 79 'H NMR (CD 3 0D): 8 6.85 6.45 1H), 2.95 2H), 2.60 2H).

c) Preparation N-3-[2-hydroxy-5-indanone]-N'-[2-bromophenyl] urea N-[2-Hydroxy-5-indanone]-N'-[2-bromophenyl] urea was prepared from 3- (326mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (610mg, 'H NMR (CD 3 0D): 8 7.92 1H), 7.65 2H), 7.45 1H), 7.09 1H), 7.00 1H), 2.90 2H), 2.66 2H).

WO 00/76495 PCT/US00/16499 Example 99 Preparation of (E)-N-14-[2-(Methoxycarbonyl) ethenyll-2-hydroxyphenyll-N'-[2bromophenvll urea a) Preparation of 4-nitro-3-hydroxycinnamic acid 3-Hydroxycinnamic acid (3.00g, 18.3 mmol) was dissolved in methylene followed by the addition of sodium nitrate (1.70 g, 26. Immol). The addition of sulfuric acid (25 mL/ 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(1.0 g, 26 'H NMR (CD 3

COCD

3 8 8.07 1H), 7.69 1H), 7.51 1H), 7.46 2H), 6.75 (d,lH).

b) Preparation of 4-nitro-3-hydroxymethylcinnamate 4-Nitro-3-hydroxycinnamic acid was stirred in excess methanol with a catalytic amount of sulfuric acid. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(1.0 g, 94 'H NMR (CD 3

COCD

3 S 8.17 1H), 7.69 1H), 7.52 1H), 7.45 2H), 6.75 3.80 3H).

c) Preparation of 4-amino-3-hydroxymethylcinnamate A mixture of 4-nitro-3-hydroxymethylcinnamate (1.0 g, 4.50mmol) and tin (I) chloride (3.0 g, 13.4 mmol) in ethanol(50mL) was heated at 80 0 C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product (650 mg, 75 'H NMR (CD30D): 87.50 6.94 1H), 6.89 1H), 6.68 1H), 6.18 1H), 3.74 3H).

d)Preparation (E)-N-[4-[2-(Methoxycarbonyl) ethenyl]-2-hydroxyphenyl]-N'-[2bromophenyl] urea (E)-N-[4-[2-(Methoxycarbonyl) ethenyl]-2-hydroxyphenyl]-N'-[2-bromophenyl] urea was prepared from 4-amino-3-hydroxymethylcinnamate (250mg, 1.3 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (300mg, 'H NMR (CD 3 OD): 6 8.24 8.05 1H), 7.69 1H), 7.65 1H), 7.42 1H), 7.21 1H), 7.19 1H), 7.10 1H) 6,45 (d,lH) 3.81 3H).

Example 100 -66- WO 00/76495 WO 0076495PCTIUSOO/16499 Preparation of (E)-N-r3-r2-(Methoxygarbonyl) ethenvill-2-hydroxyvhenyll-N'-[2bromophenyll urea N'42-bromophenyll urea a) Preparation of 3-nitro-2-hydroxycinnamic acid 2-Hydroxycinnamic acid (3.00g, 18.3 mmol) was dissolved in methylene chloride(4OmL) followed by the addition of sodium nitrate (2.21 g, 26.l1mmol). The addition of sulfuric acid (30 mL/ 3M) was then made, followed by addition of a catalytic amou nt of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

The organic layer was dried over MgSQ 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeQHI CH 2

CI

2 gave the desired product(2.0 g, 52 I'H NMR (CD 3

COCD

3 8 8.21 I1H), 8.16 I H), 8.05 1H), 7.19 1H), 6.72 1H) b) Preparation of 3-nitro-2-hydroxymethylcinnamate 3-nitro-2-hydroxycinnamic acid was stirred in excess methanol with a catalytic amount of sulfuric acid. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2

CI

2 gave the desired product(l.0 g, 94 IH NMR (CD 3

COCD

3 8 8.25 I1H), 7.8.15 I 8.06 I 7.20 2H), 6.76 3.80 3H).

c) Preparation of 3-amino-2-hydroxymethylcinnamnate A mixture of 3-nitro-2-hydroxymethylcinnamate (1.0 g, 4.5 mmol) and tin (UI) chloride (3.0 g, 13.4 mmol) in ethanol(5OmL) was heated at 80*C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOHI CH 2

CI

2 gave the desired product (700 mg, 81 'H NMR (CD 3 QD): 5 8.04 lH), 6.93 lH),6.79 1H), 6.71 1H), 6.43 lH), 3.72 3H).

d) Preparation(E)-N-[3-[2-(Methoxycarbonyl) ethenyl]-2-hydroxyphenyl]-N'.

[2-bromophenyl] urea (E)-N-[3-[2-(Methoxycarbonyl) ethenyl]-2-hydroxyphenyl)-N'-[2-bromophenyll urea was prepared from 3-amino-2-hydroxymnethylcinnamate (100 mg, 0.52 minol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride! hexane( 1/20) and filtering. (150mg, I'H NMR (CD 3 OD): 8 8.10 8.00 IH), 7.69 1H), 7.65 IH), 7.42 IH), 7.38 1H1), 7.32 IH), 7.05 1H) 6.55 (d,lH) 3.81 3H)..

Example 101 Preparation of (E)-N-[3-F2-(Amjnocarbonvl) ethenyll-2-hydroxyphenyll-N'-[2bromophenyll urea N'-r2-bromophenylj urea 67 WO 00/76495 PCT/US00/16499 a) Preparation of 2-hydroxycinnamide 2-Hydroxycinnamic acid (2.00g, 12.3 mmol) was dissolved in dimethyl formamide(O1mL) followed by the addition of benzotriazol- -yloxytris(dimethylamino)phosphonium hexafluorophosphate (5.4g, 12.3 mmol) and triethylamine 1.7mL, 12.3mmol). Ammonia gas was bubbled into the reaction mixture for 30 minutes. The mixture was allowed to stir for 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water. The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel MeOH/ CH 2 C12) gave the desired product(1.5 g, 75 b) Preparation of 3-nitro-2-hydroxycinnamide 2-Hydroxycinnamide (750 mg, 4.6 mmol) was dissolved in methylene followed by the addition of sodium nitrate (430 mg, 5. mmol). The addition of sulfuric acid (7 mL 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water. The organic layer was dried over MgSO4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C1 2 gave the desired product(350 mg, 36 'H NMR (CD3COCD 3 8 8.19 1H), 8.02 1H), 7.88 1H), 7.15 1H), 6.84 1H) c) Preparation of 3-amino-2-hydroxycinnamide A mixture of 3-nitro-2-hydroxymethylcinnamate (350 mg, 1.7 mmol) and tin (II) chloride (3.0 g, 13.4 mmol) in ethanol(50mL) was heated at 80 0 C under argon.

After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 Cl 2 gave the desired product(244 d) Preparation of (E)-N-[3-[2-(Aminocarbonyl) ethenyl]-2-hydroxyphenyl]-N'- [2-bromophenyl] urea (E)-N-[3-[2-(Aminocarbonyl) ethenyl]-2-hydroxyphenyl]-N'-[2-bromophenyl] urea was prepared from 3-amino-2-hydroxycinnamide (100 mg, 0.56 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (110 mg, NMR (CD3OD): 8 8.00 7.90 1H), 7.63 1H), 7.55 1H), 7.35 2H), 7.05 1H), 6.95 1H), 6.70 H).

Example 102 -68- WO 00/76495 PCT/US00/16499 Preparation of (E)-N-r4-[2-(Aminocarbonyl) ethenyll-2-hvdroxyphenyll-N'-[2bromophenyll urea N'-[2-bromophenyll urea a) Preparation of 3-hydroxycinnamide 3-Hydroxycinnamic acid (2.00 g, 12.3 mmol) was dissolved in dimethyl formamide(10 mL) followed by the addition of benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (5.4g, 12.3 mmol) and triethylamine 1.7 mL, 12.3mmol). Ammonia gas was bubbled into the reaction mixture for 30 minutes. The mixture was allowed to stir for 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water. The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C12) gave the desired product(1.3 g, 65 b) Preparation of 4-nitro-3-hydroxycinnamide 3-Hydroxycinnamide (750 mg, 4.6 mmol) was dissolved in methylene chloride(40 mL) followed by the addition of sodium nitrate (430 mg, 5. lmmol). The addition of sulfuric acid (7 mLU 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water. The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CHCl1 2 gave the desired product(240 mg, 25 'H NMR (CD 3

COCD

3 8 8.09 1H), 7.49 1H), 7.26 1H), 7.16 1H), 6.71 1H) c) Preparation of 4-amino-2-hydroxycinnamide A mixture of 4-nitro-3-hydroxymethylcinnamate (300 mg, 1.40 mmol) and tin (II) chloride (980 mg, 4.30 mmol) in ethanol(50 mL) was heated at 80 0 C under argon.

After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2 C2) gave the desired product (200 mg, 74 d)Preparation(E)-N-[3-[2-(Aminocarbonyl) ethenyl]-2-hydroxyphenyl]-N'-[2bromophenyl] urea (E)-N-[3-[2-(Aminocarbonyl) ethenyl]-2-hydroxyphenyl]-N'-[2-bromophenyl] urea was prepared from 4-amino-2-hydroxycinnamide (100mg, 0.56 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(l/20) and filtering. (125mg, NMR (CD30D): 8 8.05 7.92 1H), 7.60 1H), 7.4 5 1H), 7.35 1H), 7.05 2H), 6.50 (d,lH).

-69- WO 00176495 WOOO/6495PCTIUSOO/16499 Example 103 Preparation of N-[2-hydroxy 4-(Vhenyl amino carboxy) phenyll-N'-2-bromophenylI urea N-[2-hydroxy 4-(phenyl amino carboxy) phenyl]-N'-[2-bromophenyll urea was prepared from 5-(phenyl amino carboxy) 2-amino phenol (0.50 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (150 mg, 1 NMR (CD 3 QD): 8 8.25 1H), 8.00 111), 7.75 2H), 7.64 lH), 7.50 2H1), 7.41 (in, 3H1), 7.16 lH), 7.05 1H).

Example 104 Preparation of N-[4-aminocarbonyl-2-hydroxyphenvll-N'-[2-bromophenyl1 urea N- [4-Aminocarbonyl -2-hydroxyphenyl]-N'-[2-bromophenyl] urea was prepared from aminocarbonyl-2-arnino phenol (304 mng, 0.50 rmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(l/20) and filtering. (440 mng, 'H NMR (CDOD): 8 8.09 1H), 7.91 lH), 7.60 LH), 7.45 (in, 311), 7.00 IH).

Example 105 Preparation of N-(2-Hydroxy-3,5,6-trifluorophenyl)-N '-(2-bromophenvl)urea N- (2-Hydroxy-3,5,6-trifluorophenyl)-N'-(2-bromophenyl)urea was prepared from 3,5,6trifluoro-2-hydroxyaniline (83 mg, 0.51 inmol) and 2-(bromophenyl)isocyanate (100 mg, 0.53 inmol) according to the procedure in General Method B. The product was purified by preparation thin layer chromatography. El-MS m/z 359 (M-HY-.

Example 106 Preparation of N-(2-Hydroxy-3-fluoro-4-trifluoromethylphenvl)-N-(2bromophenvl~urea N-(2-Hydroxy-3-fluoro-4-trifluoromethylphenyl)-N-(2-bromophenyl)urea was prepared from 4-trifluoroinethyl-3-fluoro-2-hydroxyaniline (239 mg, 1.2 mmol) and 2- (bromophenyl)isocyanate (243 mng, 1.2 minol) according to the procedure in General Method B. Removal of solvent under reduced pressure and chromatography of the resulting solid on silica gel (hexane:ethyl acetate) gave the title compound (20 mg, El-MS m/z 391 (M-HY- ExamavIe 107 Preparation of N-(2-Hydroxv-3-iodophenyl)-N'-(2-bromophenvyl)urea N-(2-Hydroxy-3-iodophenyl)-N'-(2-bromophenyl)urea was prepared from 3iodo-2-hydroxyaniline (200 mng, 0.85 mmol) and 2-(broinophenyl)isocyanate (169 ing, 0.85 minol) according to the procedure in General Method B. Removal of solvent under reduced pressure and chromatography of the resulting solid on silica gel (hexane:ether) gave the title compound (40 mg, 11I%). IH NMR (DMSO): 8 9.45 (s, 70 WO 00/76495 WO 0076495PCr[USOO/16499 1H), 9.15 1H), 8.8 1H), 7.95 IH), 7.8 1H),7.65 lH), 7.4 1H), 7.3 (t, I 7.0 I1H), 6.65(t, 1lH).

Example 108 Preparation of N-[2-f[2-(trifluoromethyl)phenvllsulfonyllaminolphenvll-N-(2bromogphenvl~urea a) Preparation of [2-[2-(trifluoromethyl)phenyl](sulfonamido)aniline] The title compound was prepared according to General Method C using 2- (trifluoromethyl)benzenesulfonyl chloride (1 equiv.). The product was purified by chromatography on silica gel (methylene chloride: methanol) (1.04 g, El-MS m/z 317 b) Preparation of (trifluoromethyl)phenyllsulfonyllam-inolphenyl]-N-(2-bromophenyl)urea The title compound was prepared using [2-[2(tri fluoromethyl)phenyl] (sulfonamrido)aniline (1.04 g, 3.2 mmol) and 2-(bromophenyl)isocyanate (652 mg, 3.2 mmol) according to General Method B. The solvent was evaporated to give the desired urea (1.03 g, 61 El-MS m/z 514 Example 109 Preparation of N-(2-Bromophenv])-N'- [2-dimethylaminosulfonvlaminolphenyllurea a) Preparation of 1,1-(dimethylamino)]sulfonamidoaniline] The title compound was prepared according to General Method C using dimethylsulfamoyl chloride (1 equiv.). The product was purified by chromatography on silica gel (methylene chloride:methanol). ES-MS m/z 216 b) Preparation of N-(2-Bromophenyl)-N'-2- (dimethylaminosulfonylaxninolphenyllurea The title compound was prepared from [2-[I,1-(dimethlyarmino)sulfonamidoaniline (137 mng, 0.6 mmol) and 2-(bromophenyl)isocyanate (126 mg, 0.6 mmol) according to General Method B. The solvent was ev'aporated and chromatography on silica gel (ethyl acetate:hexane) gave the desired urea. El-MS m/z 413 Example 110 Preparation of N-[2-(Phenethylsulfonylamino) phenyl]-N'-(2-broniophenylburea 112- (Phenethylsulfonamido) aniline] (example 60, 3 00mg, 1.09 mmol) was placed in a Parr shaker bottle containing palladium (180 mg) under an argon stream. Methanol (150 mL) was added and the container placed on a Parr shaker (55 psi) for several hours.

The reaction mixture was filtered through Celite and the filtrate was evaporated to give the desired aniline (269 mg, El-MS m/z 277 b)Preparation of N-[2-(Phenethylsulfonylamino)phenyl]-N'-(2-bromophenyl)urea The title compound was prepared from [2-(phenethylsulfonamido) aniline] (269 mg, 0.97 mmol) and 2-(bromophenyl)isocyanate (193 mg, 0.97 mmol) according to -71- WO 00/76495 PTUO/69 PCTIUSOO/164" General Method B. The desired urea was precipitated out of toluene/hexane (384 mg, El-MS m/z 472 Example Ill Preparation of N-[2-[(2-acetamido-4-methylthiazol-5-vl)sulfonylaminolphenvll-N-(2bromophenyl)urea a) Preparation of [(2-acetamido-4-methyl-5 -thiazole)sulfonamido] aniline] The title compound was prepared using 2-acetamido-4-methyl-5thiazolesulfonyl chloride (1 equiv.) according to General Method C. A solid precipitated from the reaction mixture and was filtered to give the desired aniline (1.68 g, ES-MS m/z 327 b) Preparation of N-[2-[(2-acetamido-4-methylthiazol-5yl)sulfonylamino]phenyl]-N'-(2-bromophenyl)urea The title compound was prepared from [2-[(2-acetamido-4-methyl-5thiazole)sulfonamidolaniline] (1.68 g,5.14 mmol) and 2-(bromophenyl)isocyanate (1.02 g, 5.14 mmnol) according to General Method B. The product was precipitated from ethyl acetate/hexane (220 mg, El-MS m/z 524 72 wo oon6495 WO 0076495PCTIUSOO/16499 Examle 112 Preparation of N-[2-hydroxy-4-cvanophenyll-N'--[4-phenvlphenylI urea N-[2- Hydroxy-4-cyauiophenyl]-N'-[4-phenylphenyl] urea was prepared from cyanophenol (60mg, 0.45 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane( 1/20) and filtering. (135 mg, 'H NMR (CD 3 OD): 8 8.33 1H), 7.71-7.29 (in, 9H), 7.25 1H), 7.12 III).

Example 113 Preparation of N-r2-hvdroxy-4-cyanophenyll-N'-[2.3-dichlorophenvlI urea N-[2-Hydroxy-4-cyanophenyl]-N'-[2,3 dichiorophenyl] urea was prepared from (60mg, 0.45 minol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering. (125mg, 1'HNMR (CD 3 OD): 868.27 IH), 8.15 (in, 1H), 7.39-7.20 (in, 2H), 7.16 111), 7.06 lH).

Example 114 Prearation of N-[2-hydroxy-4-cyanophenvll-N'-.r2-methoxvphenvlI urea N-[2-Hydroxy-4-cyanophenyl]-N'-[2-methoxyphenyl] urea was prepared from (60mg, 0.45 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(1/20) and filtering (105mg, H NMR (CD 3 OD): 8 8.26 1H), 8.02 (d, 1H), 7.14 1H), 7.05 1H1), 7.00-6.83 (in, 3H), 3,84 3H).

Example 115 Preparation of N-[2-hydroxy-4-cvanophenyll-N'4r3-methoxvphbenvlI urea N-112- Hydroxy-4-cyanophenyl]-N'-[3-methoxyphenyl] urea was prepared from cyanophenol (60mg, 0.45 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hex ane( 1/20) and filtering. (102mg, '11 NMR (CDOD): 8 8.25 1H), 7.25-7.08 (mn, 3H1), 7.04 11H), 6.90 11H), 6.58 1H).

Example 116 Preparation of N-[2-hydroxy-5-fluoroiphenyll-N- [2-bromophenyl1 ure a) Preparation of 2-ainino-4-fluorophenol A mixture of 4-fluoro-2-nitrophenol(lg, 4.64mrnol) and tin (HI) chloride (5.4 g, 24.2mmol) in ethanol(5OmL) was heated at 80'C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH is made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOHI CH 2

CI

2 gave the desired product(622 mg, 'H NMR (CD 3 OD): 6 6.51 (dd, 1H), 6.32 (dd, IH), 6.17 (ddd, LH).

73 WO OOn6495 WOOO/6495PCT/USOO/16499 b) Preparation of N-[2-hydroxy-5-fluorophenyl]-N-[2-bromophenylI urea N-[2-Hydroxy-5-fluorophenyl]-N'-[2-bromophenyl] urea was prepared from 2amino-6-fluoro phenol (254mg, 2.00 romol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(l /20) and filtering. (520mg,80%). I HNMR (CD 3 OD): 8 7.88 lH), 7.79 (dd, 1H), 7.57 1H), 7.31. 1H), 7.00 111), 6.76 (dd, 1H), 6.57 (ddd,lH).

Example 117 Preparation of N-[2-hvdroxy-5-trifluoromethvlphenyll -N'4r2-bromophenylI urea a) Preparation of 2-amino-4- trifluoromethyiphenol A mixture of 4-trifluoromethyl-2-nitrophenol( 1.0 g, 4.8mmol) and tin (11) chloride (5.4 g, 24.2 mmol) in ethanol(l5OmL) was heated at 80'C under argon. After 2 hours, the starting material had disappeared and the solution was allowed to cool down and then poured into ice. The pH was made slightly basic (pH7-8), by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOHI CH 2 Cl 2 gave the desired product(708 nmg, 83 'H NMR (CD 3 OD): 6.87 lH), 6.80 1H), 6.69 1 H).

b) Preparation of N-12-hydroxy-5-trifluoromethylphenyl]-N'-[2-bromophenyl] urea N-[2-hydroxy-5-trifluoromethylphenyl]-N-[2-bromophenyl urea was prepared from 2-amino-4-trifluoromethylphenol (354mg, 2.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride! hexane(lequiv./20equiv.) and filtering. (490mg, 'H NMR (CD 3 OD): 8 8.40 1H), 7.94 1H), 7.60 IH), 7.35 IB), 7. 18 1H), 7.03 1H), 6.95 (d, 1H).

Example 118 Prearation of N.-[2-hydroxyvhenyll-N'-r2-bromonhenyl1 urea N-f 2hydroxyphenyll-N'-[2-bromo phenyll urea was prepared from 2- amino-phenol (141mg, 1.30 nimol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride! hexane( 1/20) and filtering. (300mg,75%).

IH NMR (CD 3 OD): 5 8.05 1H), 7.49 IH), 7.25 2H), 6.96 111), 6.90 2H), 6.68 1H).

Example 119 PMraration of N-rtrans-3-styrl 2-hvdroxy phenyll-N-[2-bromophenylL ureaa) Preparation of trans-6-styrl-2-nitrophenol Trans-2-styrlphenol (500 mg, 2.55 minol) was dissolved in methylene chloride(4OmL) followed by the addition of sodium nitrate (240 mg, 2.8 1 mmol). The addition of sulfuric acid (3 niL of 3M) was then made, followed by addition of a -74wo oon6495 WO 0076495PCT/USOO/1 6499 catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hours, the reaction mixture was diluted with methylene chloride and extracted with water.

CI

2 gave the desired product (200 mg, .36 I'H NMR (CD3COCD 3 8 8.05 111), 7.90 (d, 2H),7.65-7.20 (m,7H),7.00 IH).

b) Preparation of trans-6-styrl-2-aininophenol A mixture of trans-6-styrl-2-nitrophenol (200 mg, 0.83 mimol) and tin (II1) chloride (560 mg, 2.60 mmol) in ethanol(5OmL) was heated at 80'C under argon.

After 2 hours, the starting material has disappeared and the solution was allowed to cool down and then poured into ice. The pH is made slightly basic by addition of solid NaOH, before being extracted with ethyl acetate. The organic phase was washed with brine, dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOHI C11 2 0 2 gave the desired product (50 mg, 29 I HNMR (CD 3 OD): 5 7.51 (mn, 3H1), 7.29 (in, 3H),7.l11 1H), 7.00 (in, 2H), 6.69 (in, 2H).

c) Preparation of N-[trans-3-styrl-2-hydroxyphenyll-N '-[2-bromophenyl] urea N- [trans-3-styrl-2-hydroxyphenyll-N'-[2-bromophenyl] urea was prepared from trans-6-styrl-2-aminophenol (35mg, 0. 17 mmcl) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (36mg, 'HNMR (CD 3 OD): 57.97 7.62-7.48 (mn, 4H), 7.45-7.26 (in, 5H), 7.25 1H), 7.15 1H), 7.01 6.88 (t 2H1).

Example 120 Preparation of N-[2-hydroxy-3 .4-dichlorophenyll-N'-[2-methoxvphenylI urea N-[2-hydroxy-3 ,4-dichlorophenyl]-N'-[2-methoxyphenyl] urea was prepared from 2-amino-5,6-dichlorophenol (80mg, 0.50 inmol, example 82b) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane( 1/20) and filtering. (125mg,77%). H NMR (CD 3

OD):

8.02 7.79 1H1), 7.05-6.86 (mn, 4H), 3.92 3H).

Example 121 Preparation of N-[2-hvdroxy-3 .4-dichlorophenvll-N'-r4-inethoxyphenyl1 urea N- 12-hydroxy-3,4-dichlorophenyll-N'-[4-methoxyphenyll urea was prepared from 2ainino-5,6-dichlorophenol (80mg, 0.50 iniol, example 82b) according to the procedure in General Method B. The product was purified by precipitation from inethylene chloride/ hexane(lequiv./20equiv.) and filtering. (120mg, 'H NMR 7.89 IH), 7.35 2H1), 6.99 11H), 6.90 (dd, 2H), 3.80 3H).

Example 122 Preparation of N-[2-hydroxy-3,4-dichlorophenyll-N-F3-trifluoromethvlphenl1 urea 75 WO 00/76495 WO 0076495PCT/USOO/16499 N-[2-hydroxy-3,4-dichlorophenyll-N'-[3-trifluoromethylphenyl] urea was prepared from 2-amiino-5,6-dichlorophenol (80mg, 0-50 mmol, example 82b) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(lequivi/20equiv.) and filtering. (130mg, 'H NMR

(CD

3 OD): 8 7.96 2H), 7.60 1 7.48 1 7.30 I 7.00 IlH).

Example 123 Preparation of N-[2-hydroxy-3 .4-dichlorophenvll-N'- [2-phenviphenylI urea N- [2-hydroxy-3,4-dichlorophenylil-N'-[2-phenylphenyl] urea was prepared from 2-amino- 5,6-dichiorophenol (80mg, 0.50 iniol, example 82b) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(lequiv./20equiv.) and filtering. (1 10mg, 'HNMR (CDOD): 8 7.77 IH), 7.73 lH), 7.53-7. 14 (in, 8H1), 6.95 1H).

Example 124 Preparation of N-[2-hydroxv-3,4-dichlorophenyll-N'--r2.3-dichloronhenyl1 urea N- [2-Hydroxy-3,4-dichlorophenyl]-N'-[2,3-dichlorophenylI urea was prepared from 2amino-5,6-dichlorophenol (80mg, 0.50 mmol, example 82b) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(lequivi/20equiv.) and filtering. (130mg, I'H NMR (CD 3 OD): 8 8.06 (dd, 1H), 7.91 111), 7.25 (in, 2H), 7.00 1H).

Example 125 Preparation of N-[2-hydroxy-4-isopropylphenyll-N'-[3-trifluoromethvinhenvlI urea a) Preparation of 3-isopropyiphenol (3.00g, 22 inmol) was dissolved in methylene chloride(40m1) followed by the addition of sodium nitrate (2.06g, 24mrmol). The addition of sulfuric acid (25niL 3M) is then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 h, the reaction mixture is diluted with mnethylene chloride and extracted with water. The organic layer is dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ CH 2

CI

2 gave the desired product( I.09g, 27 I'H NMR (CD3COCD 3 8 7.95 (d,1IH), 7.62 (d,1IH), 7.11 I1H), 2.95 (in, IlH), 1.24 (d, 6H).

b) Preparation of To a solution of 2-nitro-5-isopropylphenol(Ig, 6.4 inmol) in methanol(50 mnL) was added 10% Pd/C (100 mg). The mixture was flushed with argon, then hydrogen was bubbled through the solution for 10 min. and a hydrogen atmosphere was, maintained at balloon pressure overnight. The mixture was filtered through celite and the celite was washed with methanol. The solvent was evaporated and chromatography of the resulting solid on silica gel (5%MeOH-/ CH 2 Cl 2 gave the desired product(775 mg, 93 NMR (CD 3 OD): 8 6.7 1-6.44 (mn, 311), 2.73 (mn, 1H), 1.20 6H).

76 WO OW76495 WO 0076495PCTUSOO/16499 c) Preparation of N-[2-hydroxy-4-isopropylphenyl]-N-E3trifluoromethyiphenyl] urea N- [2-hydroxy-4-isopropylphenyl]-N-[3-trifluoromethylphenyl] urea was prepared from 2-amino-5-isopropylphenol (75mg, 0.50 mmol) according to the procedure in General Method B. Tbe product was purified by precipitation from methylene chloride! hexanc(lequivi/20equiv.) and filtering. (140mg, 'H1 NMR

(CD

3 OD): 8 7.91 2H1), 7.62 1H), 7.47 111), 7.39 1H), 6.75 1H1), 6.72 (d, IH), 2.80 (in, I 1.21 6H).

Example 126 Preoaration of N-[2-hydroxv-3-naphthyll-N'-[2,3-dichlorophenlI urea N-[2hydroxy-3-naphthyll-N'-[2,3-dichlorophenylI urea was prepared from 3-amino 2naphthol (160mg, 1.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(l equiv./20equiv.) and filtering. (285mg, 1 HNMR (CD 3 OD): 8 8.48 (s, 1 8. 10 I1H), 7.68 I1H), 7.57 IlH), 7.40-7.23 (in, 4H), 7.18 I1H).

Example 127 Preparation of N-r2-[(2,3-Dichlorothien-5-:yl)lsulfonylaminolphenyll-N-(2bromophenyl)urea a) Preparation of [2-[(2,3-Dichlorothien-5-yl)]sulfonylaminoaniline] The title compound was prepared according to General Method C using 2,3chloride eq). The product was purified by flash chromatography on silica gel (ethyl acetate/hexane 20/80-methylene chloride:methanol 90/10) (1.25 g, 39 El-MS m/z 321 b) Preparation of N-[2-[(2,3-Dichlorothien-5-yl)]sulfonylaminolphenyl]-N'-(2bromophenyl)urea The title compound was prepared from 12-[(2,3-dichlorothien-5yl)]sulfonylaminoaniline (1.25 g,3.9 mmol) and 2-(bromophenyl)isocyanate (768 mng, 3.9 minol) according to General Method B. The product was purified by flash chromatography on silica gel (ethyl acetate:hexane 30/70) (272 mg, 13 El-MS m/z 520 Example 128 Preparation of N-12-[(3 .5-Bistrifluoromethylphenyl)sulfonylaminolphenyll-N'-(2bromophenvlburea a) Preparation of [2-(3,5-Bistrifluoromethylphenyl)sulfonylaminoanilinc] The title compound was prepared according to General Method C using (bistrifluoromethyl)phenylsulfony chloride (1.28 g, 4.1 inmol) and ophenylenediainine (441 mg, 4.1 mmol). The product was purified by flash chromatography on silica gel (methylene chloride: methanol 95/5) (611 mg, 39 El- MS m/z 383 77 WO 00/76495 WO 0076495PCT/USOO/16499 b) Preparation of N-[2-[(3,5-Bistrifluoromethylphenyl)sulfonylamino]phenyl]- N'-(2-bromophenyl)urea The title compound was prepared from [2-(3,5-bistrifluoromethylphenyl) sulfonylaminoaniline (591 mg, 1.5 imnol) and 2-bromophenylisocyanate (305 mg, mmol) according to General Method B. The product was purified by flash chromatography on silica gel (ethyl acetate:hexane 30fl0) (10 mg, 1 %).EI-MS mlz 580 Example 129 Preparation of N- F2-(2-BenZyl)sulfonylanminol-(5-trifluoromethyl)phenyll-N'-(2bromLophenyl)urea a) Preparation of [(4-Benzylsulfonylamino)-(3 -nitro)-benzotrifluoridel 4-Amino-3-nitro-benzotrifluoride (1.0 g, 4.85 minol) was mixed in DMF and the reaction mixture was cooled to 0 0 C. Sodium hydride (175 mg, 7.28 mmol) was added to the cold mixture and allowed to mix for ten minutes a deep red color was noted). Toluenesulfonyl chloride (925 mg, 4.85 mnmol) was added (reaction color changed to yellow) and the reaction was mixed for sixteen hours at room temperature.

The reaction was quenched in NH 4 Cl and extracted with ethyl acetate: hexane 1: 1).

The product was purified by flash chromatography on silica gel ethyl acetate:hexane 30/70) (8.78 mg, 52 El-MS m/z 359 b) Preparation of [(4-Benzylsulfonylamino)-(3-amino)-benzotrifluoride] [(4-Benzylsulfonylam-ino)-(3-nitro)-benzotrifluoride (230 mg, 0.64 mmol) was mixed in methanol. and poured into a Parr bottle. Palladium on carbon (15 mg) was added under an argon stream. The reaction mixture was placed on a Parr shaker psi, H 2 for several hours. The reaction mixture was filtered through Celite to give the title compound. (210 mg, 99%) El-MS m/z 329 c) Preparation of N-[2-[(2-Benzyl)sulfonylarninoj-(5-trifluoromethyl)phenyl]- N'-(2-bromophenyl)urea The title compound was prepared from [(4-benzylsulfonylamino)-(3-amino)benzotrifluoride (210 mg, 0.64 mmol) and 2-bromiophenylisocyanate (126 mg, 0.64 mmol) according to the procedure in General Method B. The product was purified by flash chromatography on silica gel (ethyl acetate:hexane 30/70) (70 mg, 21 El-MS rn/z 526 Example 130 Preparation of N-[2-[2-(3-Nitrohenyl)sulfonvlaminolphenvul-N '-(2-bromophenvi)urea a) Preparation of [2-((3-Nitrophenyl)sulfonylanino)aniline] The title compound was prepared according to General Method C using 3nitrobenzenesulfonyl chloride (I eq). The product was purified by flash chromatogrphy -78wo oon6495 WO 0076495PCT/USOO/16499 on silica gel (methylene chloride:methanol 96/4).(1 .07 g, 37 El-MS mn/z 294 b) Preparation of N-[2-[(3-Nitrophenyl)sulfonylaniinolphenyll-N-(2bromophenyl)urea The title compound was prepared from [2-(3-nitrophenyl)sulfonylaniinoaniline] (590 mg, 2.0 mmol) and 2-(bromophenyl)isocyanate (398 mg, 2.0 mmol) according to the procedure in General Method B. The product was purified by flash chromatography on silica gel (ethyl acetate:hexane 30/70) (400 mg, El-MS m/z 489 (M-HY- Example 131 Preparation of N- F2-[2-(4-Phenoxyphenyl)sulfonylaminolphenyll-N'-(2-bromopheny1) ureaa) Preparation of 12-((4-Phenoxyphenyl)sulfonylamino)aniline] The title compound was prepared according to General Method C using 4phenoxyphenylsulfonyl chloride (969 mg, 3.6 mmol) and o-phenylenediamine (300 mg, 2.77 mmol). The reaction mixture was partitioned between water (200 nil) and toluene:methylene chloride The organic phase collected and the methylene chloride evaporated leaving the toluene. Hexane added and the product precipatated from solution. (317 mg, 34 El-MS mlz 341 b) Preparation of N-[2-[(4-Phenoxyphenyl)sulfonylaminolphenyl]-N-(2bromophenyl)urea The title compound was prepared from [2-(4-phenoxyphenyl)sulfonyl anilnoaniine (276 mg, 0.8 mmol) and 2-(bromophenyl)isocyanate (161 mg, 0.8 mmol) according to the procedured in General Method B. The product was purified by flash chromatography on silica gel (ethyl acetate:hexane 30/70) (240 mg, 55 El-MS m/z 536 (M-H) Example 132 Preparation of N-f r2-1 S)-i I -Camphorsulfonylaminolphenyll-N-(2-bromophenyl)urea a) Preparation of 15)-I 0-Carnphorsulfonylamino)aniline The title compound was prepared according to General Method C using (1 S)(+)-10-Camnphorsulfonyl chloride 16 g, 4.6 mmol) and o-phenylenediaxnine (500 mg, 4.6 mmol). The reaction mixture was partitioned between water (200 ml) and toluene:methylene, chloride The organic phase was separated and the methylene, chloride evaporated leaving the toluene. Hexane was added and solid precipitated from solution. (130 mg, ELMS m/z 323 b) Preparation of 1S)- 10-Campborsulfonylaxnino]phenyl]-N'-(2bromophenyl)urea The title compound was prepared from iS)- camphorsulfonylan-dno] aniline (130 mg, 0.4 mmol) and 2-(bromophenyl)isocyanate mg, 0.4 nimol) according to the procedure in General Method B. The solvent was 79 WO 00/76495 WO 0076495PCT/tJSOO/16499 evaporated and product was precipitated from methylene chloride:hexane. (200 mg, 91). El-MS iii/z 518 Example 133 Preparation of IR)- 10-Camphorsulfonylaniinolphenvl-N'(2-bromophenl)urea a) Preparation of IR)- 1 -Camphorsulfonylamino)aniline The title compound was prepared according to General Method C using lO-caniphorsulfonyl chloride (1.16 g, 4.6 mmol) and o-phenylenediamine (500 mog, 4.6 mrnol). The reaction mixture was partitioned between water (200 mL) and toluene:methylene chloride(1 The organic phase was separated and the methylene chiloride evaporated leaving the toluene. Hexane was added and the product precipitated from solution. (563 mng, El-MS m/z 323 b) Preparation of iR)- 10-Camphorsulfonylamino]phenyl]-N-(2bromophenyl)urea The title compound was prepared from [1I-(IlR)- caxnphorsulfonylarninoaniline] (563 mg, 1.75 mmnol) and 2-(bromophenyl)isocyanate (346 mg, 1.75 romol) according to the procedure in General Method B. The product was purified by flash chromatography on silica gel (ethyl acetate:hexane 30/70) (263 mg, 29 El-MS m/z 518 (M-llY Example 134 Preparation of N-[2-F2-(2-Nitro-(4-trifluoromethyl)]phenyl)sulfonylaminolphenvl-N-(2bromophenyl)urea a) Preparation of [2-[(2-Nitro)-(4-trifluoromethyl)phenyl]sulfonylaminoI aniline The title compound was prepared according to General Method C using 2-nitro- 4-(trifluoromethyl)benzenesulfonyl chloride (1 eq). The product was purified by flash chromatography on silica gel methylene chloride:methanol 96/4) (875 mg, 25 EI-

MIS

rn/z 362 b) Preparation of N-[2-[2-(2-Nitro-(4trifluoromethyl)phenyl)sulfonylamidno]phenyl-N'-(2-bromophenyl)urea The title compound was prepared from [2-[(2-nitro)-(4-trifluoromethyl) phenyllsulfonylamninol aniline (740 mg, 2.1 mniol) and 2-(bromophenyl)isocyanate (406 mg, 2.1 ummol) according to General Method B. The product was purified by flash chromatography on silica gel (ethyl acetate:hexane 30/70). The product was further purified by recrystallization in ethyl acetate:hexane. (320 mg, 28 El-MS m/z 557 (M-H) Example 135 Preparation of N-(2-hydroxy-4-azidop~henyl)-N'-(2-iodovhenvl)ure a) Preparation of N-(2-hydroxy-4-aminophenyl)-N-(2-iodophenyl)urea WO 00/76495 PCT/US00/16499 To a solution of N-(2-hydroxy-4-nitrophenyl)-N'-(2-iodophenyl)urea (220 mg, 0.55 mmol) in ethanol (15 mL), Tin chloride (522 mg, 2,75 mmol) was added. The reaction mixture was stirred at reflux for 16 hours then cooled to room temperature.

The reaction mixture was basified to pH 8 with aq. NaHCO 3 then extracted with ethyl acetate The organic extracts were combined, dried over MgSO 4 filtered and concentrated under reduced pressure to give product (180 mg, EI-MS m/z 370

(M+H)

b) Preparation of N-(2-hydroxy-4-azidophenyl)-N'-(2-iodophenyl)urea The N-(2-hydroxy-4-aminophenyl)-N'-(2-iodophenyl)urea(77 mg, 0.21 mmol) was added to HC1/H 2 0 (0.21 mL/0.42 mL), and cooled to 0 Sodium nitrate (14.5 mg, 0.21 mmol) was added to the reaction mixture. The reaction mixture was stirred at 0°C for 30 minutes. Sodium azide (14 mg, 0.21 mmol) was added to reaction mixture and it was warmed to room temperature. The reaction mixture was stirred at room temperature for 18 hours. Then it was extracted with three times by ethyl acetate. The organic extracts were combined, dried over MgSO 4 filtered and concentrated under reduced pressure and chromatography of the resulting solid on silica gel (hexane ethyl acetate; 5:1) gave product (20 mg, EI-MS m/z 396 Example 136 Preparation of N-(2-hvdroxv-3-azidophenvl)-N'-(2-bromophenyl)ureaa) Preparation of N-(2-hydroxy-3-aminophenyl)-N'-(2-bromophenyl)urea To a solution of N-(2-hydroxy-3-nitrophenyl)-N'-(2-bromophenyl)urea (300 mg, 0.85 mmol) in ethanol (20 mL), Tin chloride (958 mg, 4.25 mmol) was added. The reaction mixture was stirred at reflux for 16 hours then cooled to room temperature.

The reaction mixture was basified to pH 8 with.aq. NaHCO 3 then extracted with ethyl acetate The organic extracts were combined, dried over MgSO 4 filtered and concentrated under reduced pressure to give product (274 mg, EI-MS m/z 323 b) Preparation of N(2-hydroxy-3-azidophenyl)-N'-(2-bromophenyl)urea The N-(2-hydroxy-3-aminophenyl)-N'-(2-bromophenyl)urea(274 mg, 0.85 mmol) was added to HCI/H20 (0.85 mL/1.7 mL), cooled to 0 0 C. Sodium nitrate (58.6 mg, 0.85 mmol) was added to the reaction mixture. The reaction mixture was stirred at 0 C for 30 minutes. Sodium azide (55 mg, 0.85 mmol) was added to reaction mixture and it was warmed to room temperature. The reaction mixture was stirred at room temperature for 18 hours then it was extracted with three times with ethyl acetate. The organic extracts were combined, dried over MgSO 4 filtered and concentrated under reduced pressure and chromatography of the resulting solid on silica gel (hexane ethyl acetate; 5:1) gave product (210 mg, EI-MS m/z 349 Example 137 -81- WO OOn6495 WO 0076495PCTIUSOO/16499 Preparation of N-r2-hvdroxy-3-cyanophenvll-N'-[2-methoxyphenylI urea N- [2hydroxy-3-cyanophenyl]-N'-[2-methoxyphenyl] urea was prepared from 2-amino-6cyanophenol (134mg, 1.00 mmol) according to the procedure in General Method B.

The product was purified by precipitation from methylene chloride/ hexane(l equiv./20equiv.). and filtering. (230 mg, I'H NMR (CD 3 QD): 8 8.06 (d, 111), 7.79 1H), 7.49-7.35 (in, 2H), 7.05-6,87 (in, 3H), 3.95 3H).

Example 138 Preparation of N-F2-hvdroxv-3-cyanophenyll-N'-[3-trifluoromethyluhenylI urea N- [2-hydroxy-3-cyanophenyl]-N'-[3-trifluoromethylphenyl] urea was prepared from 2amino-6-cyanophenol (134mg, 1.00 minol, example 83a) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(lequiv./20equiv.) and filtering. (280mg, 'H NMR (CDOD): 8 8.10 1H), 7.96 1H), 7.54 1H), 7.55-7.25 (in, 3H), 7.01 1H).

Example 139 Preparation of N-[2-hydroxy-3-cyanophenyll-N '-[2-p2henyirihenil1 urea N-[2hydroxy-3-cyanophenyl]-N'-[2-phenylphenyl] urea was prepared from 2-amino-6cyanophenol (134mg, 1.00 minol, example 83a) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (270mg, H NMR (CD 3 OD): 8 7.81 (d, 1H), 7.75 IH), 7.56-7.15 (in, 9H), 6.91 I1H).

Example 140 Preparation of N-[2-hydroxy-3-cyanophenyll-N'4F2,3-dichlorophenylI urea N-[2hydroxy-3-cyanophenyl]-N'-[2,3 dichiorophenyl] urea was prepared from 2-amino-6cyanophenol (I134mg, 1.00 mmol, example 83 a) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (300mg, H NMR (CD 3 OD): 8 8.11 (d, 1H), 8.01 1H), 7.33-7.25 (in, 3H), 7.00 1H).

Exmpe 41 Preparation of N-[2-hydroxv-4-isopropylphenyll-N-F2,3-dichlorophenylI urea N- [2-hydroxy-4-isopropylphenyl]-N'-[2,3-dichlorophenyl] urea was prepared from 2- (150 mng, 1.00 minol, example 128a) according to the procedure in General Method B. The product was purified by precipitation ftrm methylene chloride/ hexane( lequivi/20equiv.) and filtering (285mg, 'H NMR

(CD

3 OD): 8 8.05 2H), 7.77 1H), 7.26 (in, 2H), 6.88 (mn, 2H), 2.82 (in, 1H), 1.25 6H).

Example 142 Preparation of N-[2-hydroxv-4-isonro]2v]1henvl-N-[2-chloro-5-trifluoromethylphen11 urea N-[2-hydroxy-4-isopropylphenyl]-N-[2-chloro-5-trifluoronethylphenyl] urea was prepared from 2-amino-5-isopropylphenol (150mg, 1.00 minol, example 128a) 82 WO OV76495 WO 0076495PCTIUSOOII 6499 according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane( lequiv./20equiv.) and filtering.

(275mg, 1HNMR (CD 3 OD): 8 8.50 1H), 7.70 111), 7.51 111), 7.22 (d, 1H1), 6.70 (in, 211), 6.62 (dd, 1H), 2.76 (in, 1. 16 6H).

Example 143 Preparation of N-[2-hydroxy-3-phenylyhenyll-N'-[2,3-dichloronhenvl1 ureaa) Preparation of 2-nitro-6-phenylphenol 2-phenyiphenol (3.00g, 17.6mniol) was dissolved in methylene chloride(40m1d) followed by the addition of sodium nitrate (1 .65g, 19.4mmol). The addition of sulfuric acid (25 mV 3M) was then made, followed by addition of a catalytic amount of sodium nitrite. The mixture was allowed to stir. After 24 hrs, the reaction mixture was diluted with methylene chloride and extracted with water. The organic layer was dried over MgSO 4 and filtered. The solvent was evaporated and chromatography of the resulting solid on silica gel (4%MeOH/ C11 2 07) gave the desired product(900 mg, 24 I'H NMR (CD3COCD 3 8 8.19 7.79 (d,11H), 7.64 2H1), 7.50 211), 7.45 (t, 1H), 7.22 11H).

b) Preparation of 2-amino-6-phenylphenol To a solution of 2-nitro-6-phenylphenol(900 mg, 4.2mmol) in methanol(50m1) was added 10% Pd/C (100 mg). The mixture was flushed with argon, then hydrogen was bubbled through the solution for 10 min. and a hydrogen atmosphere was maintained at balloon pressure overnight. The mixture was filtered through celite and the celite was washed with methanol. The solvent was evaporated and chromatography of the resulting solid on silica gel (5%MeOH/ CH 2

CI

2 gave the desired product(700 mg, 90 'H NMR (CD 3 OD): 8 7.55-7.27 (in, 5H), 6.77-6.61 (mn, 3H) c) Preparation of N-12-hydroxy-3-phenylphenyll-N'-[2,3-dichlorophenyl urea N-[2-hydroxy-3-phcnylphenyl]-N'-[2,3-dichlorophenyll urea was prepared from 2- armino-6-phenylphenol (92.5mg, 0.50 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride! hexane(l equivi/20equiv.) and filtering. (IlS0mg,81I%). H NMR (CD 3 OD): 8 8.06 (d, IH),7.65 1H), 7.54 2H),7.40 2H1), 7.32 11H) 7.22 (mn, 2H1), 7.04-6.88 Preparation of N-[2-hydroxy-3-phenylphenyl]-N-[2,3-dichlorophenyl] urea b)N-[2-hydroxy-3-phenylphenyl]-N'-[2,3-dichlorophenyl] urea was prepared from 2amino-6-phenylphenol (92.5mg, 0.50 inmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane(lequivi/20equiv.) and filtering. (150 mg, 81 I H NMR (CD 3 QD): 5 8.06 (d, IH),7.65 IH), 7.54 2H),7.40 2H), 7.32 1H) 7.22 (in, 2H), 7.04-6.88 (in, 2H).

Example 144 83 WO OV76495 WO 0076495PCT/USOO/16499 Preparation of N-[2-hvdroxv-5-nitrophenvll-N-F2-methoxyvhenylI urea -2 hydroxy-5-nitrophenylll-N'-[2-methoxyphenyl] urea was prepared from 2-arnino-4nitrophenol (154 mg, 1 .00 mniol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ hexane( lequiv./20equiv.) and filtering. (270 mg, 'H NMR (CDOD): 8 9.10 111), 8. 10 I1H), 7.85 1H), 7.08-6.88 (in, 4H1), 3.96 3H).

Example 145 Preparation of N-r2-hydroxv-5-nitrophenyll-N-[3-trifluoromethlphenl1 urea N- [2-hydroxy-5-nitrophenyll-N-[3-trifluoromethylphenyl urea was prepared from 2amino-4-nitrophenol (154 mg, 1.00 mmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (290 mg, H NMR (CD 3 OD): 8 9.12 (s, IlH), 7.89 ITH), 7.68 I1H), 7.55 (in, 2H), 7.45 I1H), 7.00 IlH).

Example 146 Preparation of N-[2-hydroxy-5-nitrophenyll-N'4r2-phenylphenylI urea N-12hydroxy-5-nitrophenyl]-N'-[2-phenylphenyl] urea was prepared from 2-amino-4nitrophenol (154 mg, 1.00 inmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (285 mg, 8 'H NMR (CD 3 QD): a 8.09 (s, 1H), 7.86 111), 7.58-7.20 (in, 9H), 6.95 1H).

Example 147 Preparation of N-[2-hydroxy-5-nitrophenyll-N'-[2.3-dichlorophenylI urea N-[2hydroxy-5-nitrophenyl]-N'-[2,3-dichlorophenyl] urea was prepared from 2-amino-4nitrophenol (154 mg, 1.00 inmol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride! and filtering. (290 mg, 1H1 NMR (CD 3 OD): 8 9.11 (s, 1H1), 8.17 1H), 7.89 1H), 7.34 (in, 2H), 6.95 111).

Example 148 Preparation of N- [2-hydroxv-5-ethylsulfonvlphenyil-N'- [2.3-dichlorophenvlI urea N- [2-hydroxy-5-ethylsulfonylphenyl]-N'-[2,3-dichlorophenylI urea was prepared from 2amino-4-(ethylsulfonyl)phenol (185 mng, 1.00 minol) according to the procedure in General Method B. The product was purified by precipitation from methylene chloride/ and filtering. (310 mng, 'H NMR (CD 3 OD): 8 8.65 (s, 1H), 8.18 111), 7.45 1H), 7.26 (mn, 7.00 111), 3.33 211), 1.24 3H).

The following compounds of Formula may be prepared in accordance with the examples and schemes as described above: Example 149 N-[2-(2-Ami~no-(4-trifluoromethyl) phenyl) sulfonylamino] phenyl]- NWbromophenyl)urea El-MS in/z 527 -84- WO 007f6495 PCTIUS00/16499 Example 150 N-[2-(aminosulfonyl phenyl) 3-amino phenyl] N'-(2-bromo phenyl) ureaEI-MS m/z 426 The following compounds of Formula may be prepared in accordance with the examples and schemes as described above, or may also be purchased commercially from well recognized sources. For instance, from Aldrich Chemical Company: N-(2-Hydroxy-4-nitrophenyl)-N'-phenylurea For instance, from the Alfred Bader Collection of Aldrich Chemical: 1-(2-Carboxyphenyl)-3-(3-fluorophenyl)urea 1-(2-Carboxyphenyl)-3-(3-chlorophenyl)urea Available from Gallard Schlesinger Company and/or the Sigma Aldrich Library of Rare Compounds: l-(2-Carboxyphenyl)-3-(4-chlorophenyl)urea 1-(p-Anisyl)-3-(2-carboxyphenyl)urea Available from Gallard Schlisinger Company: 2-(3,4-Dichlorophenylcarbonyldiimino)-5-trifluoromethylbenzoic acid 2-(4-Chlorophenylcarbonyldiimino)-5-trifluoromethylbenzoic acid N-Phenyl-N'-(2-carboxyphenyl)urea.

From Maybridge Chemical Company, Cambridge England: 1,1 '-(4-Methyl-2-phenylene)bis[3-tolyl)]thiourea; and N-(5-Chloro-2-hydroxy-4-nitrophenyl)-N'-phenylurea.

The following compounds of Formula may be prepared in accordance with the examples and schemes as described above, or as indicated by their respective citations in Chemical Abstracts: I -(m-Anisyl)-3-(2-carboxyphneyl)urea; I -(o-Anisyl)-3-(2-carboxyphenyl)urea; 1-(2-Carboxyphenyl)-3-(3,4-dichlorophenyl)urea; and I1-(2-Carboxyphenyl)-3-(2,4-dichlorophenyl)urea.

METHOD OF TREATMENT The compounds of Formula (II) and (III), or a pharmaceutically acceptable salt thereof can be used in the manufacture of a medicament for the prophylactic or therapeutic treatment of any disease state in a human, or other mammal, which is exacerbated or caused by excessive or unregulated IL-8 cytokine production by such mammal's cell, such as but not limited to monocytes and/or macrophages, or other chemokines which bind to the IL-8 a or 3 receptor, also referred to as the type I or type II receptor.

For purposes herein, the compounds of Formula (II) and (I1I) all have the same dosages, and dosage formulations as that of Formula are used interchangeably.

Accordingly, the present invention provides a method of treating a chemokine mediated disease, wherein the chemokine is one which binds to an IL-8 a or 3 receptor WO 00/76495 PCT/US00/16499 and which method comprises administering an effective amount of a compound of Formula or a pharmaceutically acceptable salt thereof. In particular, the chemokines ars IL-8, GROa, GROp, GROy or NAP-2.

The compounds of Formula are administered in an amount sufficient to inhibit cytokine function, in particular IL-8,GROo, GROP, GROy or NAP-2 such that they are biologically regulated down to normal levels of physiological function, or in some case to subnormal levels, so as to ameliorate the disease state. Abnormal levels of IL-8, GROa, GROp, GROy or NAP-2 for instance in the context of the present invention, constitute: levels of free IL-8 greater than or equal to 1 picogram per mL; (ii) any cell associated IL-8, GROca, GROp, GROy or NAP-2 above normal physiological levels; or (iii)the presence of IL-8, GROa, GROp, GROy or NAP-2 above basal levels in cells or tissues in which IL-8, GROa, GROp, GROy or NAP-2 respectively, is produced.

There are many disease states in which excessive or unregulated IL-8 production is implicated in exacerbating and/or causing the disease. Chemokine mediated diseases include psoriasis, atopic dermatitis, arthritis, asthma, chronic obstructive pulmonary disease, adult respiratory distress syndrome, inflammatory bowel disease, Crohn's disease, ulcerative colitis, stroke, septic shock, endotoxic shock, gram negative sepsis, toxic shock syndrome, cardiac and renal reperfusion injury, glomerulonephritis, thrombosis, graft vs. host reaction, alzheimers disease, allograft rejections, malaria, restinosis, angiogenesis or undesired hematopoietic stem cells release.

These diseases are primarily characterized by massive neutrophil infiltration, Tcell infiltration, or neovascular growth, and are associated with increased IL-8, GROX, GROp, GROy or NAP-2 production which is responsible for the chemotaxis of neutrophils into the inflammatory site or the directional growth of endothelial cells. In contrast to other inflammatory cytokines (IL-1, TNF, and IL-6), IL-8, GROc, GROp, GROy or NAP-2 has the unique property of promoting neutrophil chemotaxis, enzyme release including but not limited to elastase release as well as superoxide production and activation. The a-chemokines but particularly, GROoc, GROp, GROy or NAP-2, working through the IL-8 type I or II receptor can promote the neovascularization of tumors by promoting the directional growth of endothelial cells. Therefore, the inhibition of IL-8 induced chemotaxis or activation would lead to a direct reduction in the neutrophil infiltration.

The compounds of Formula are administered in an amount sufficient to inhibit IL-8, binding to the IL-8 alpha or beta receptors, from binding to these receptors, such as evidenced by a reduction in neutrophil chemotaxis and activation.

The discovery that the compounds of Formula are inhibitors of IL-8 binding is based upon the effects of the compounds of Formulas in the in vitro receptor binding -86- WO 00/76495 PCT/US00/16499 assays which are described herein. The compounds of Formula have been shown to be dual inhibitors of both recombinant type I and type II IL-8 receptors. Preferably the compounds are inhibitors of only one receptor, preferably Type II.

As used herein, the term "IL-8 mediated disease or disease state" refers to any and all disease states in which IL-8, GROa, GROP, GROy or NAP-2 plays a role, either by production of IL-8, GROa, GROJ, GROy or NAP-2 themselves, or by IL-8, GROa, GROp, GROy or NAP-2 causing another monokine to be released, such as but not limited to IL-1, IL-6 or TNF. A disease state in which, for instance, IL-1 is a major component, and whose production or action, is exacerbated or secreted in response to IL-8, would therefore be considered a disease stated mediated by IL-8.

Diseases for which the present compounds are useful include psoriasis, atopic dermatitis, arthritis, asthma, chronic obstructive pulmonary disease, adult respiratory distress syndrome, inflammatory bowel disease, Crohn's disease, ulcerative colitis, stroke, septic shock, endotoxic shock, gram negative sepsis, toxic shock syndrome, cardiac and renal reperfusion injury, glomerulonephritis, thrombosis, graft vs. host reaction, alzheimers disease, allograft rejections, malaria, restinosis, angiogenesis, atherosclerosis, osteoporosis, gingivitis or undesired hematopoietic stem cells release.

The present compounds are also useful for the treatment of diseases caused by respiratory viruses, including but not limited to rhinovirus and influenza virus, herpesviruses, including but not limited to herpes simplex I and II, and hepatitis viruses, including but not limited to Hepatitis B and Hepatitis C virus.

As used herein, the term "chemokine mediated disease or disease state" refers to any and all disease states in which a chemokine which binds to an IL-8 a or P receptor plays a role, such as but not limited to IL-8, GRO-a, GRO-P, GRO-y, or NAP-2. This would include a disease state in which, IL-8 plays a role, either by production of IL-8 itself, or by IL-8 causing another monokine to be released, such as but not limited to IL-1, IL-6 or TNF. A disease state in which, for instance, IL-1 is a major component, and whose production or action, is exacerbated or secreted in response to IL-8, would therefore be considered a disease stated mediated by IL-8.

As used herein, the term "cytokine" refers to any secreted polypeptide that affects the functions of cells and is a molecule which modulates interactions between cells in the immune, inflammatory or hematopoietic response. A cytokine includes, but is not limited to, monokines and lymphokines, regardless of which cells produce them.

For instance, a monokine is generally referred to as being produced and secreted by a mononuclear cell, such as a macrophage and/or monocyte. Many other cells however also produce monokines, such as natural killer cells, fibroblasts, basophils, neutrophils, endothelial cells, brain astrocytes, bone marrow stromal cells, epideral keratinocytes and B-lymphocytes. Lymphokines are generally referred to as being produced by lymphocyte cells. Examples of cytokines include, but are not limited to, Interleukin-1 -87- WO 00/76495 PCT/US00/16499 Interleukin-6 Interleukin-8 Tumor Necrosis Factor-alpha (TNF-a) and Tumor Necrosis Factor beta (TNF-B).

As used herein, the term "chemokine" refers to any secreted polypeptide that affects the functions of cells and is a molecule which modulates interactions between cells in the immune, inflammatory or hematopoietic response, similar to the term "cytokine" above. A chemokine is primarily secreted through cell transmembranes and causes chemotaxis and activation of specific white blood cells and leukocytes, neutrophils, monocytes, macrophages, T-cells, B-cells, endothelial cells and smooth muscle cells. Examples of chemokines include, but are not limited to, IL-8, GRO-a, GRO-P, GRO-y, NAP-2, IP-10, MIP-la, MIP-P, PF4, and MCP 1, 2, and 3.

In order to use a compound of Formula or a pharmaceutically acceptable salt thereof in therapy, it will normally be formulated into a pharmaceutical composition in accordance with standard pharmaceutical practice. This invention, therefore, also relates to a pharmaceutical composition comprising an effective, non-toxic amount of a compound of Formula and a pharmaceutically acceptable carrier or diluent.

Compounds of Formula pharmaceutically acceptable salts thereof and pharmaceutical compositions incorporating such may conveniently be administered by any of the routes conventionally used for drug administration, for instance, orally, topically, parenterally or by inhalation. The compounds of Formula may be administered in conventional dosage forms prepared by combining a compound of Formula with standard pharmaceutical carriers according to conventional procedures. The compounds of Formula may also be administered in conventional dosages in combination with a known, second therapeutically active compound. These procedures may involve mixing, granulating and compressing or dissolving the ingredients as appropriate to the desired preparation. It will be appreciated that the form and character of the pharmaceutically acceptable character or diluent is dictated by the amount of active ingredient with which it is to be combined, the route of administration and other well-known variables. The carrier(s) must be "acceptable" in the sense of being compatible with the other ingredients of the formulation and not deleterious to the recipient thereof.

The pharmaceutical carrier employed may be, for example, either a solid or liquid. Exemplary of solid carriers are lactose, terra alba, sucrose, talc, gelatin, agar, pectin, acacia, magnesium stearate, stearic acid and the like. Exemplary of liquid carriers are syrup, peanut oil, olive oil, water and the like. Similarly, the carrier or diluent may include time delay material well known to the art, such as glyceryl monostearate or glyceryl distearate alone or with a wax.

A wide variety of pharmaceutical forms can be employed. Thus, if a solid carrier is used, the preparation can be tableted, placed in a hard gelatin capsule in powder or pellet form or in the form of a troche or lozenge. The amount of solid -88- WO 00//6495 PCTUS00/16499 carrier will vary widely but preferably will be from about 25mg. to about 1g. When a liquid carrier is used, the preparation will be in the form of a syrup, emulsion, soft gelatin capsule, sterile injectable liquid such as an ampule or nonaqueous liquid suspension.

Compounds of Formula may be administered topically, that is by nonsystemic administration. This includes the application of a compound of Formula (1) externally to the epidermis or the buccal cavity and the instillation of such a compound into the ear, eye and nose, such that the compound does not significantly enter the blood stream. In contrast, systemic administration refers to oral, intravenous, intraperitoneal and intramuscular administration.

Formulations suitable for topical administration include liquid or semi-liquid preparations suitable for penetration through the skin to the site of inflammation such as liniments, lotions, creams, ointments or pastes, and drops suitable for administration to the eye, ear or nose. The active ingredient may comprise, for topical administration, from 0.001% to 10% w/w, for instance from 1% to 2% by weight of the Formulation.

It may however comprise as much as 10% w/w but preferably will comprise less than w/w, more preferably from 0.1% to 1% wlw of the Formulation.

Lotions according to the present invention include those suitable for application to the skin or eye. An eye lotion may comprise a sterile aqueous solution optionally containing a bactericide and may be prepared by methods similar to those for the preparation of drops. Lotions or liniments for application to the skin may also include an agent to hasten drying and to cool the skin, such as an alcohol or acetone, and/or a moisturizer such as glycerol or an oil such as castor oil or arachis oil.

Creams, ointments or pastes according to the present invention are semi-solid formulations of the active ingredient for external application. They may be made by mixing the active ingredient in finely-divided or powdered form, alone or in solution or suspension in an aqueous or non-aqueous fluid, with the aid of suitable machinery, with a greasy or non-greasy base. The base may comprise hydrocarbons such as hard, soft or liquid paraffin, glycerol, beeswax, a metallic soap; a mucilage; an oil of natural origin such as almond, corn, arachis, castor or olive oil; wool fat or its derivatives or a fatty acid such as steric or oleic acid together with an alcohol such as propylene glycol or a macrogel. The formulation may incorporate any suitable surface active agent such as an anionic, cationic or non-ionic surfactant such as a sorbitan ester or a polyoxyethylene derivative thereof. Suspending agents such as natural gums, cellulose derivatives or inorganic materials such as silicaceous silicas, and other ingredients such as lanolin, may also be included.

Drops according to the present invention may comprise sterile aqueous or oily solutions or suspensions and may be prepared by dissolving the active ingredient in a suitable aqueous solution of a bactericidal and/or fungicidal agent and/or any other -89- WO 00/76495 PCT/USOO/16499 suitable preservative, and preferably including a surface active agent. The resulting solution may then be clarified by filtration, transferred to a suitable container which is then sealed and sterilized by autoclaving or maintaining at 98-100 for half an hour.

Alternatively, the solution may be sterilized by filtration and transferred to the container by an aseptic technique. Examples of bactericidal and fungicidal agents suitable for inclusion in the drops are phenylmercuric nitrate or acetate (0.002%), benzalkonium chloride and chlorhexidine acetate Suitable solvents for the preparation of an oily solution include glycerol, diluted alcohol and propylene glycol.

Compounds of formula may be administered parenteraly, that is by intravenous, intramuscular, subcutaneous intranasal, intrarectal, intravaginal or intraperitoneal administration. The subcutaneous and intramuscular forms of parenteral administration are generally preferred. Appropriate dosage forms for such administration may be prepared by conventional techniques. Compounds of Formula may also be administered by inhalation, that is by intranasal and oral inhalation administration. Appropriate dosage forms for such administration, such as an aerosol formulation or a metered dose inhaler, may be prepared by conventional techniques.

For all methods of use disclosed herein for the compounds of Formula the daily oral dosage regimen will preferably be from about 0.01 to about 80 mg/kg of total body weight. The daily parenteral dosage regimen about 0.001 to about 80 mg/kg of total body weight. The daily topical dosage regimen will preferably be from 0.1 mg to 150 mg, administered one to four, preferably two or three times daily. The daily inhalation dosage regimen will preferably be from about 0.01 mg/kg to about 1 mg/kg per day. It will also be recognized by one of skill in the art that the optimal quantity and spacing of individual dosages of a compound of Formula or a pharmaceutically acceptable salt thereof will be determined by the nature and extent of the condition being treated, the form, route and site of administration, and the particular patient being treated, and that such optimums can be determined by conventional techniques. It will also be appreciated by one of skill in the art that the optimal course of treatment, i.e., the number of doses of a compound of Formula or a pharmaceutically acceptable salt thereof given per day for a defined number of days, can be ascertained by those skilled in the art using conventional course of treatment determination tests.

The invention will now be described by reference to the following biological examples which are merely illustrative and are not to be construed as a limitation of the scope of the present invention.

BIOLOGICAL EXAMPLES The IL-8, and Gro-a chemokine inhibitory effects of compounds of the present invention were determined by the following in vitro assay: Receptor Binding Assays: WO 00/76495 PCT/US00/16499 [1251] IL-8 (human recombinant) was obtained from Amersham Corp., Arlington Heights, IL, with specific activity 2000 Ci/mmol. Gro-a was obtained from NEN- New England Nuclear. All other chemicals were of analytical grade. High levels of recombinant human IL-8 type a and p receptors were individually expressed in Chinese hamster ovary.cells as described previously (Holmes, et al., Science, 1991, 253, 1278). The Chinese hamster ovary membranes were homogenized according to a previously described protocol (Haour, et al., J Biol Chem., 249 pp 2195-2205 (1974)).

Except that the homogenization buffer was changed to 10mM Tris-HCL, ImM MgS04, EDTA (ethylene-diaminetetra-acetic acid), ImMPMSF (a-toluenesulphonyl fluoride), 0.5 mg/L Leupeptin, pH 7.5. Membrane protein concentration was determined using Pierce Co. micro-assay kit using bovine serum albumin as a standard.

All assays were performed in a 96-well micro plate format. Each reaction mixture contained 1251 IL-8 (0.25 nM) or 1251 Gro-ac and 0.5 pg/mL of IL-8Rac or 1.0 pg/mL of IL-8RP membranes in 20 mM Bis-Trispropane and 0.4 mM Tris HCI buffers, pH 8.0, containing 1.2 mM MgSO4, 0.1 mM EDTA, 25 mM NaCl and 0.03% CHAPS. In addition, drug or compound of interest was added which had been pre-dissolved in DMSO so as to reach a final concentration of between 0.0lnM and 100 uM. The assay was initiated by addition of 125 1-IL-8. After 1 hour at room temperature the plate was harvested using a Tomtec 96-well harvester onto a glass fiber filtermat blocked with 1% polyethylenimine/0.5% BSA and washed 3 times with 25 mM NaCI, 10 mM TrisHC1, 1 mM MgSO4, 0.5 mM EDTA, 0.03 CHAPS, pH 7.4. The filter was then dried and counted on the Betaplate liquid scintillation counter. The recombinant IL-8 Ra, or Type I, receptor is also referred to herein as the non-permissive receptor and the recombinant IL-8 Rp, or Type II, receptor is referred to as the permissive receptor.

All of the exemplified compounds of Formulas to (III) noted herein in the Synthetic Chemistry Section, of Examples 1 to 150 plus the additional purchased compounds demonstrated an IC50 from about 45 to about <1 pg/mL in the permissive models for IL-8 receptor inhibition. All of these compounds were also found to be inhibitors of Gro-a binding at about the same level. The compound 1-(2- Carboxyphenyl)-3-(4-chloro-2-methylphenyl)urea was found to be active at about pg/mL.

The following compounds, generally tested at levels of up to 45 pg/mL were found to not demonstrate levels of IL-8 receptor antagonism within the criteria set forth above at the dosage levels tested. These compounds are: 1-(4-Chloro-alpha,alpha,alpha-trifluoro-3-tolyl)-3-[2-(4-chlorophenyl)thio]-5chlorophenyl urea 1-(6-Chloro-alpha,alpha,alpha-trifluoro-3-tolyl)-3-[2-(4-chlorophenoxy)-5chlorophenyl]urea l-(2-Mercaptophenyl)-3-phenyl-2-thiourea -91 WO 00/76495 WO 0076495PCT[USUOI6499 I -(2-Hydroxyphenyl)-3-phenyl-2-thiourea 3,3 '-(Carbonothioyldiimino)bis [4-hydroxybenzoic acid] 1,3-thioureylene)di(4-hydroxybenzoic acid) 1 -(2-Tolyl)-3-(3-chloro-6-hydroxyphenyl)-2-thiourea 1 -[(2-Hydroxy-4-aminophenyl)]-(3-phenyl)-urea N-(2-Carboxy-4-trifluromethylphenyl)-N'-(3-chlorophenyl)urea N-(2-Carboxyphenyl)-N'-(2,5-dichlorophenyl)urea 1 -(2-Carboxyphenyl)-3-(2-Chloro-5-trifluoromethylphenyl)urea 2-[2-[3-(4-Bromophenyl)ureidoj-4-trifluoromethylphenoxylbenzoic acid 2-[2-[3-(4-Chlorophenyl)ureido]phenoxy]benozic acid [3-(4-Chloro3-(trifluromethyl)phenyl)ureidolphenoxy]benozic acid N- (2-Hydroxyphenyl) -N'-phenyl urea N- phenylurea N-14-Carboxy-2-hydroxyphenyl] -n'-phenylurea N-(2-Hydroxy-4-nitrophenyl)-N '-(4-nitrophenyl)urea 1 -(2-Carboxyphenyl)-3-(2,6-xylyl)urea 1 -(6-Carboxy-2,4-dichlorophenyl)-3-(2,4,6-trichlorophenyl)urea 1 -(2-Carboxyphenyl)-3-(2,5-dimethoxyphenyl)urea 1 -(2-Carboxyphenyl)-3-(2-rnethylphenyl)urea 1 -[(2-Hydroxyphenyl)-3-(2-methyl)-5-nitrophenyllurea 1 -(2,5-Dichlorophenyl)-3-(2-hydroxy-4-niirophenyl)urea I -(2-Carboxyphenyl)-3-(4-chloro-2-methylphenyl)urea N-(2-phenylsulfonylaminophenyl-Nt-phenylurea N-(2-Hydroxy-4-nitrophenyl)-N'-(4-ethoxycarbonylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-ethoxycarbonylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(3-ethoxycarbonylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(4-phenylphenyl)urea N-(2-Hydroxy-4.-nitrophenyl)-N'-.(4-phenoxyphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-.(4-propylphenyl)urea N-(4-Trifluromethyl-2-(4-nitrobenzenesulfonyl)amino]-N-phenylurea N-(3-Carboxyphenyl)-N'-2-hydroxy-4-nitrophenyl)urea N-(4-Trifluromethyl-2-(metbylsulfonyl)anino-N-phenylurea N-(2-Hydroxy4-nitrophenyl)-N'-[2-(isopropyl)phenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2,6-dimethylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-fluoro-5-nitrophenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-chloro-5-trifluromethylphenyl)urea N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methoxy-4-nitrophenyl)urea N-(2-Hydroxy-l1-napthyl)-N'-(2-phenylphenyl)urea '-(2-bromophenyl)urea 92 WO 00/76495 WO 0076495PCT/USOO/16499 N-(2-hydroxy 3,4 dichlorophenyl )-N'-(4-phenylphenyl)urea N-(2-hydroxy-3-naphthyl)-N'-(2-methoxyphenyl)urea N-(2-hydroxy-3-naphthyl)-N'-(2-phenylphenyl)urea.

N-(2-Hydroxy-3-naphthyl)-N'(41-methoxyphenyl)urea N-(2-Hydroxy-3-naphtbyl)-N'-(3-trifluoromethylphenyl)urea N-(2-Hydroxy-3-naphthyl)-N'-(4-phenylphenyl)urea N-[2-(2-Carboxyphenylsulfonylamino)phenyll-N-(2-bromophenyl)urea N-(2-Hydroxy-3-phenylphenyl)-N'-(2-methoxyphenyl)tirea N-2Hdoy3peypey)N-4mtoyhnlue N-(2-Hydroxy-3-phenylphenyl)-N'-.(3-trifluoromethylphenyl)urea N-(2-Hydroxy-3-phenylphenyl)-N'-(2-phenylphenyl)urea N-(2-Hydroxy-3-phenylphenyl)-N'-(4-phenylphenyl)urea N-[2-[(2,5-Dichlorothien3-yl)sulfonylaininolphenyl]-N-(2-bromophenyl)urea N-(2-Hydroxy,3,4-dichlorophenyl)-N dimethoxyphenyl)urea N-(2-Hydroxy,3,4-dichlorophenyl)-N'-(2-chloro-5-trifluoromethylphenyl)urea N-(2-Hydroxy-3-naphthyl)-N'-(2,4 dimethoxyphenyl)urea N-(2-Hydroxy-.3-naphthyl)-N'-(2-chloro-5-trifluoromethylphenyl)urea N-(2-Hydroxy-3 phenylphenyl)-N'-(2,A-dimethoxyphenyl)urea N-(2-Hydroxy-4-isopropylpheny])-N'-(2,4-dimethoxyphenyl)urea N-(2-Hydroxy-3-phenylphenyl)-N'-(2-chloro-5-trifluoromethylphenyl)urea N-(2-Hydroxy-5-nitrophenyl)-N'-(2,4-dimethoxyphenyl)urea N-(2-Hydroxy-5-nitrophenyl)-N'-(2-chloro-5-trifluoromethylphenyl)urea N-(2-Hydroxy-3-cyanophenyl)-N'-(4-methoxyphenyl)urea N-(2-Hydroxy-3-cyanophenyl)-N'-(4-phenylphenyl)urea N-(2-Hydroxy-3-cyanophenyl)-N'-.(2,4 dimethoxyphenyl)urea N-(2-Hydroxy-3-cyanophenyl)-N'-(2-chloro-5-trifluoromethylphenyl)urea N-(2-Hydroxy- 5-phenylphenyl)-N'-(2-methoxyphenyl)urea N-(2-Hydroxy- 5-phenylphenyl)-N'-(4-methoxyphenyl)urea N-(2-Hydroxy- 5-phenylphenyl)-N'-(3-trifluoromethylphenyl)urea N-(2-Hydroxy- 5-phenylphenyl)-N'-(2-phenylphenyl)urea N-(2-Hydroxy-5-phenylphenyl)-N'-.(4-phenylphenyl)urea N-(2-Hydroxy-5-phenylphenyl)-N'-(2,3-dichlorophenyl)urea N-(2-Hydroxy-5-phenylphenyl)-N'-.(2,4-dimnethoxyphenyl)urea N-(2-Hydroxy-5-phenylphenyl)-N'-(2-chloro-5-trifluoromethylphenyl)urea N-(2-Hydroxy-5-ethylsulfonylphenyl)-N'-(4-methoxyphenyl)urea N-(2-Hydroxy-5-ethylsulfonylphenyl)-N'-(3-trifluoromethylphenyl)urea N-(2-Hydroxy-5-ethylsulfonylphenyl)-N'-(2-phenylphenyl)urea N-(2-Hydroxy-5-ethylsulfonylphenyl)-N-(4-phenylphenyl)urea N-(2-Hydroxy-5-ethylsulfonylphenyl)-N'-(2,4-dimethoxyphenyl)urea 93 WO 00/76495 PCT/US00/16499 N-(2-Hydroxy-5-ethylsulfonylphenyl)-N'-(2-chloro-5-trifluoromethylphenyl)urea.

N-[2-Hydroxy-3,4-dichlorophenyl]-N'-[2,4 dimethoxyphenyl] urea N-[2-Hydroxy-3,4-dichlorophenyl]-N'[2-chloro-5-trifluoromethylphenyl] urea; and N-[2-Hydroxy-3-naphthyl]-N'-[3-trifluoromethylphenyl] urea Chemotaxis Assay The in vitro inhibitory properties of these compounds were determined in the neutrophil chemotaxis assay as described in Current Protocols in Immunology, vol. I, Suppl 1, Unit 6.12.3., whose disclosure is incorporated herein by reference in its entirety. Neutrophils where isolated from human blood as described in Current Protocols in Immunology Vol I, Suppl 1 Unit 7.23.1, whose disclosure is incorporated herein by reference in its entirety. The chemoattractants IL-8, GRO-o, GRO-P, GRO-y and NAP-2 where placed in the bottom chamber of a 48 multiwell chamber (Neuro Probe, Cabin John, MD) at a concentration between 0.1 and 100 nM. The two chambers where separated by a 5um polycarbonate filter. When compounds of this invention were tested, they where mixed with the cells (0.001 1000 nM) just prior to the addition of the cells to the upper chamber. Incubation was allowed to proceed for between about 45 and 90 min at about 37 0 C in a humidified incubator with 5% CO 2 At the end of the incubation period, the polycarbonate membrane was removed and the top side washed, the membrane was then stained using the Diff Quick staining protocol (Baxter Products, McGaw Park, IL, USA). Cell which had chemotaxed to the chemokine were visually counted using a microscope. Generally, four fields where counted for each sample, these number where averaged to give the average number of cells which had migrated. Each sample was tested in triplicate and each compound repeated at least four times. To certain cells (positive control cells) no compound was added, these cells represent the maximum chemotactic response of the cells. In the case where a negative control (unstimulated) was desired, no chemokine was added to the bottom chamber. The difference between the positive control and the negative control represents the chemotactic activity of the cells.

Elastase Release Assay: The compounds of this invention where tested for their ability to prevent Elastase release from human neutrophils. Neutrophils where isolated from human blood as described in Current Protocols in Immunology Vol. I, Suppl. 1 Unit 7.23.1.

PMNs 0.88 x 106 cells suspended in Ringer's Solution (NaCI 118, KCI 4.56, NaHCO3 KH2PO4 1.03, Glucose 11.1, HEPES 5 mM, pH 7.4) where placed in each well of a 96 well plate in a volume of 50 ul. To this plate was added the test compound (0.001 1000 nM) in a volume of 50 ul, Cytochalasin B in a volume of 50 ul (20ug/ml) and Ringers buffer in a volume of 50 ul. These cells where allowed to warm (37 oC, C02, 95% RH) for 5 min before IL-8, GROc, GROP, GROy or NAP-2 at a final concentration of 0.01 1000 nM was added. The reaction was allowed to proceed for -94min before the 96 well plate was centrifuged (800 xg 5 min) and 100 ul of the supernatant removed. This supernatant was added to a second 96 well plate followed by an artificial elastase substrate (MeOSuc-Ala-Ala-Pro-Val-AMC, Nova Biochem, La Jolla, CA) to a final concentration of 6 ug/ml dissolved in phosphate buffered saline.

Immediately, the plate was placed in a fluorescent 96 well plate reader (Cytofluor 2350, Millipore, Bedford, MA) and data collected at 3 min intervals according to the method of Nakajima et al J. Biol Chem 254 4027 (1979). The amount of Elastase released from the PMNs was calculated by measuring the rate of MeOSuc-Ala-Ala-Pro-Val-AMC degradation.

The above description fully discloses the invention including preferred embodiments thereof. Modifications and improvements of the embodiments specifically disclosed herein are within the scope of the following claims. Without further elaboration, it is believed that one skilled in the are can, using the preceding description, utilize the present invention to its fullest extent. Therefore the Examples herein are to be construed as merely illustrative and not a limitation of the scope of the present invention in any way. The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows.

Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.

The reference to any prior art in this specification is not, and should not be taken as, an acknowledgment or any form or suggestion that that prior art forms part of the common general knowledge in Australia.

o

S

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Claims

1. A method of treating a chemokine mediated disease state selected from the group consisting of malaria, restinosis, angiogenesis, atherosclerosis, osteoporosis, gingivitis, undesired hematopoictic stem cells release and diseases caused by respiratory viruses, herpesviruses, and hepatitis viruses, including but not limited to Hepatitis B and Hepatitis C virus wherein the chemokine binds to an IL-8 ax orP receptor in a mammal, which comprises administering to said mammal an effective amount of a compound of the formula: n(Y) -R)m G H H wherein is oxygen or sulfur; R is any functional moiety having an ionizable hydrogen and a pKa of 10 or less; *RI is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted C I -l1 alkyl; C I-i1O alkyl; C2- 1Q alkenyl; C I 10 alkoxy; halosubstituted C I 1 alkoxy; azide; S(O)tR4; hydroxy; hydroxy C I 4alkyl; aryl; aryl C 1 4 alkyl; aryloxy; aryl C 14 alkyloxy; heteroaryl; heteroarylalkyl; heterocyclic, heterocyclic C I 4allcyl; heteroaryl C 1 alkyloxy; aryl C2- 10 alkenyl; heteroaryl C2-10 alkenyl; heterocyclicC2..io alkenyl; NR4R5; C2-10 alkenyl C(O)NR4R5; C(O)NR4RIO; S(O)3H; S(O)3R8; Ci-iO alkyl C(O)Rll1; C2-10 alkenyl C(Q)R~I; C2-10 alkenyl. C(O)ORii1; C(O)Rll1; C(O)0R12; OC(O) RI 1; NR4C(O)RI 1; or two Ri moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; t is 0, or an integer having a value of 1 or 2; s is an integer having a value of I to 3; R4 and R5 are independently hydrogen, optionally substituted CI-4 alkyl, optionally substituted aryl, optionally substituted aryl Cl..4alkyl, optionally substituted heteroaryl, optionally substituted heteroaryl. C I -4alkyl, heterocyclic, heterocyclic C 1 alkyl, or R4 and R5 together with the nitrogen to which they are attached form a 5 to 7 member ring which may optionally comprise an additional heteroatom selected from OINIS; Y is independently selected from hydrogen; halogen; nitro; cyano; halosubstituted CI-10 alkyl; CI10 alkyl; C2-10 alkenyl; CI-10i alkoxy; halosubstituted C 1- 10 alkoxy; azide; S (O)tR4; hydroxy; hydroxyC 1-4alkyl; aryl; aryl Ci1A- alkyl; aryloxy; arylCl-4 alkyloxy; heteroaryl; heteroarylalkyl; heteroarylC 14 alkyloxy; heterocyclic, heterocyclicC 1-4alkyl; aryl C2-l10 alkenyl; heteroaryl C2-l10 alkenyl; heterocyclicC21o alkenyl; NR4R5; C2- 1 0 alkenyl. C(O)NR4R5; -96 WO 00/76495 PCT/US00/16499 C(O)NR4Ro1; S(0)3H; S(0)3Rg; Cl-10 alkyl C(O)R11; C2-10 alkenyl C(O)R11; C2-10 alkenyl C(O)ORI 1; C(O)RI1; C(O)OR12; OC(O) R1; NR4C(O)R11; or two Y moieties together may form O-(CH2)sO- or a 5 to 6 membered unsaturated ring; n is an integer having a value of I to 3; m is an integer having a value of 1 to 3; R8 is hydrogen or C1-4 alkyl; RIO is Cl-10 alkyl C(0)2R8; R11 is hydrogen, C1-4 alkyl, optionally substituted aryl, optionally substituted aryl C1-4alkyl, optionally substituted heteroaryl, optionally substituted heteroaryl C1- 4alkyl, optionally substituted heterocyclic, or optionally substituted heterocyclic C 4alkyl; R12 is hydrogen, C1-10 alkyl, optionally substituted aryl or optionally substituted arylalkyl; or a pharmaceutically acceptably salt thereof.

2. The method according to Claim 1 wherein the ionizable hydrogen has a pKa of 3 to

3. The method according to Claim 2 wherein R is hydroxy, carboxylic acid, thiol, -SR2 -OR2, -NH-C(O)Ra, -C(O)NR6R7, -NHS(0)2Rb, -S(0)2NHRc, NHC(X)NHRb, or tetrazolyl; wherein R2 is a substituted aryl, heteroaryl, or heterocyclic moiety which ring has the functional moiety providing the ionizable hydrogen having a pKa of 10 or less; R6 and R7 are independently hydrogen or a C1-4 alkyl group, or R6 and R7 together with the nitrogen to which they are attached form a 5 to 7 member ring which ring may optionally contain an additional heteroatom which heteroatom is selected from oxygen, nitrogen or sulfur; Ra is an alkyl, aryl, aryl C1-4alkyl, heteroaryl, heteroaryl C -4alkyl, heterocyclic, or a heterocyclic C -4alkyl moiety, all of which may be optionally substituted; Rb is a NR6R7, alkyl, aryl, arylC1-4alkyl, arylC2-4alkenyl, heteroaryl, heteroarylC 1-4alkyl, heteroarylC2-4 alkenyl, heterocyclic, heterocyclic C -4alkyl, heterocyclic C24alkenyl moiety, camphor, all of which may be optionally substituted one to three times independently by halogen; nitro; halosubstituted C1-4 alkyl; C1-4 alkyl; C1-4 alkoxy; NR9C(O)Ra; C(O)NR6R7, S(0)3H, or C(O)OCl-4 alkyl; R9 is hydrogen or a C1-4 alkyl; Re is alkyl, aryl, arylCl-4alkyl, arylC2-4alkenyl, heteroaryl, heteroarylC I-4alkyl, heteroarylC2-4alkenyl, heterocyclic, heterocyclic C1-4alkyl, or a heterocyclic C2-4alkenyl moiety, all of which may be optionally substituted one to three times independently by halogen, nitro, halosubstituted Cl-4 alkyl, Cl-4 alkyl, C1- 4 alkoxy, NR9C(O)Ra, C(O)NR6R7, S(0)3H, or C(O)OC1-4 alkyl. -97- WO OOn6495 WO 0076495PCT/USOO/16499

4. The method according to Claim 3 wherein the R2 is optionally substituted one to three times by halogen, nitro, halosubstituted C I -i0 alkyl, C I -1o alkyl, C I- alkoxy, hydroxy, SH, -C(O)NR6R7, -NH-C(O)Ra, -N}IS(O)Rb, S(O)NR6R7, C(O)0R8, or a tetrazolyl ring.

5. The method. according to Claim 3 wherein R is OH, -NHS(O)2Rb or C(O)OH.

6. The method according to Claim 1 wherein R 1 is halogen, cyano, nitro, CF3, C(O)NR4R5, alkenyl C(O)NR4R5, C(O) R4R 1Q, alkenyl C(Q)OR 12, heteroaryl, heteroarylalkyl heteroaryl alkenyl, or

7. The method according to Claim 1 wherein Y is halogen, Ci 14 alkoxy, optionally substituted aryl, optionally substituted arylalkoxy, methylene dioxy, thioC14alkyl, thioaryl, halosubstituted alkoxy, optionally substituted C I -4alkyl, hydroxy alkyl.

8. The method according to Claim I wherein R is OH, SH, or NHS(O)sRb and RI is substituted in the 3-position, the 4- position or di substituted in the 3,4- position by an electron withdrawing moiety.

9. The compound according to Claims I or 8 wherein Y is mono-substituted in the 2'-position or 3Y- position, or is disubstituted in the Or position of a monocyclic ring.

10. The compound according to Claims 1, 8 or 9 wherein n and m are each equal to 1 or more.

11. The method according to Claim 1 wherein R is a carboxylic: acid, and Ri is hydrogen, or R I is substituted in the 4-position.

12. The method according to Claim 1 wherein the compound, or a pharmaceutically acceptable salt is selected from the group consisting of: N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methoxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-phenylphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methylthiophenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2,3-dichiorophenyl)urea; N-(2-Hydroxy 4-nitro phenyl) N'-(2-chloro phenyl) urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2,3-methylenedioxyphenyl)urea; N-(2-Hydroxy-4-nitrophenyl)-N'-(2-methoxy-3-chlorophenyl)urea; N-(2-hydroxy 4-nitro phenyl) N'-(2-phenyloxy phenyl) urea; N-(3-Chioro-2-hydroxyphenyl)-N'-(bromophenyl)urea; N-(2-Hydroxy-3-glycinemethylestercarbonylphenyl)-N'-(2-bromophenyl)urea; N-(3-Nitro-2-hydroxyphenyl)-N -(2-bromophenyl)urea; N-(2-Hydroxy-4-cyanophenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-3,4-dichlorophenyl)-N-(2-bromophenyl)urea; 98 wo oon6495 WO 0076495PCT/USOO/1 6499 N-(3-Cyano-2-hydroxyphenyl)-N'-(2-bromophenyl)urea; N-(2-Hydroxy-4-cyanophenyl)-N'-(2-methoxyphenyl)urea; N-(2-Hydroxy-4-cyanophenyl)-N '-(2-phenylphenyl)urea; N-(2-Hydroxy-4-cyanophenyl-N'-(2,3-dichlorophenyl)urea; N-(2-Hydroxy-4-cyanophenyl)-N'-(2-methylphenyl)urea; N-(2-Hydroxy-3-cyano-4-methylphenyl)-N'-(2-bromophenyl)urea; N-(4-Cyano-2-hydroxyphenyl)-N'-(2-trifluoromethylphenyl)urea; N-(3-Trifluoromethyl-2-hydroxyphenyl)-N-(2-bromophenyl)urea; N-(3-Phenylaminocarbonyl-2-hyclroxyphenyl)-N-(2-bromophenyl)urea; N-(2-hydroxy 4-nitro phenyl) N'-(2-iodo phenyl) urea; N-(2-hydroxy 4-nitro phenyl) N'(2-bromo phenyl) thiourea; N-(2-phenylsulfonanudo)-4-cyanophenyl-N'(2-bromo phenyl)urea; [3-[(2-Amiinocarbonyl)ethenyl]-2-hydroxyphenyl]-N'-(2-bromophenyl)urea; N-(2-Hydroxy,3,4-dichlorophenyl)-N'-(2-methoxyphenyl)urea; N-(2-Hydroxy,3,4-dichlorophenyl)-N'-(2-phenylphenyl)urea; N-(2-Hydroxy-3 ,4-dichlorophenyl)-N'-(2,3-dichlorophenyl)urea; N-(2-Hydroxy-5-nitrophenyl)-N'-(2,3-dichlorophenyl)urea; and N-(2-Hydroxy-3-cyanophenyl)-N'-(2,3 dichlorophenyl)urea; or a pharmaceutically acceptable salt thereof. -99-