Multicyclic compounds which inhibit leukocyte adhesion mediated by VLA-4

A compound of formula II:

• wherein:
• R1 is selected from the group consisting of:
• (a) —(CH2)x—Ar—R5 where R5 is selected from the group consisting of —O—Z—NR6R6′ and —O—Z—R7 wherein R6 and R6′ are independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, heterocyclic, substituted heterocyclic, and where R6 and R6′ are joined to form a heterocycle or a substituted heterocycle, R7 is selected from the group consisting of heterocycle and substituted heterocycle, and Z is selected from the group consisting of —C(O)— and —SO2—,
• Ar is aryl, heteroaryl, substituted aryl or substituted heteroaryl,
• x is an integer of from 1 to 4;
• and
• (b) Ar1—Ar2—C1-10alkyl-, Ar1—Ar2—C2-10alkenyl- and Ar1—Ar2—C2-10alkynyl-, wherein Ar1 and Ar2 are independently aryl or heteroaryl each of which is optionally substituted with one to four substituents independently selected from Rb;
• alkyl, alkenyl and alkynyl are optionally substituted with one to four substituents independently selected from Ra;
• R2 is selected from the group consisting of hydrogen, C1-10 alkyl, C2-10 alkenyl, C2-10 alkynyl, aryl, aryl C1-10alkyl, heteroaryl, and heteroaryl C1-10 alkyl, wherein alkyl, alkenyl and alkynyl are optionally substituted with one to four substituents selected from Ra, and aryl and heteroaryl are optionally substituted with one to four substituents independently selected from Rb;
• R3 is selected from the group consisting of hydrogen, C1-10 alkyl optionally substituted with one to four substituents independently selected from Ra and Cy optionally substituted with one to four substituents independently selected from Rb;
• Ra is selected from the group consisting of Cy, —ORd, —NO2, halogen, —S(O)mRd, —SRd, —S(O)2ORd, —S(O)mNRdRe, —NRdRe, —O(CRfRg)nNRdRe, —C(O)Rd, —CO2Rd, —CO2(CRfRg)nCONRdRe, —OC(O)Rd, —CN, —C(O)NRdRe, —NRdC(O)Re, —OC(O)NRdRe, —NRdC(O)ORe, —NRdC(O)NRdRe, —CRd(N—ORe), CF3, and —OCF3;
• wherein Cy is optionally substituted with one to four substituents independently selected from Rc;
• Rb is selected from the group consisting of Ra, C1-10 alkyl, C2-10 alkenyl, C2-10 alkynyl, aryl C1-10 alkyl, heteroaryl, C1-10 alkyl, wherein alkyl, alkenyl, aryl, heteroaryl are optionally substituted with a group independently selected from Rc;
• Rc is selected from the group consisting of halogen, amino, carboxy, C1-4 alkyl, C1-4 alkoxy, aryl, aryl C1-4 alkyl, hydroxy, CF3, and aryloxy;
• Rdand Re are independently selected from hydrogen, C1-10 alkyl, C2-10 alkenyl, C2-10 alkynyl, Cy and Cy—C1-10alkyl, wherein alkyl, alkenyl, alkynyl and Cy are optionally substituted with one to four substituents independently selected from Rc;
• or Rd and Re together with the atoms to which they are attached form a heterocyclic ring of 5 to 7 members containing 0-2 additional heteroatoms independently selected from oxygen, sulfur and nitrogen;
• Rf and Rg are independently selected from hydrogen, C1-10 alkyl, Cy and Cy—C1-10 alkyl;
• or Rf and Rg together with the carbon to which they are attached form a ring of 5 to 7 members containing 0-2 heteroatoms independently selected from oxygen, sulfur and nitrogen;
• Cy is cycloalkyl, heterocyclyl, aryl, or heteroaryl;
• m is an integer from 1 to 2;
• n is an integer from 1 to 10;
• Y is selected from the group consisting of hydrogen, Rd, Cy, —ORd, —NO2, halogen, —S(O)mRd, —SRd, —S(O)2ORd, —S(O)mNRdRe, —NRdRe;
• —O(CRfRg)nNRdRe, —C(O)Rd, —CH(OH)Rd, —CO2Rd, —CO2(CRfRg)nCONRdRe, —OC(O)Rd, —CN, —C(O)NRdRe, —NRdC(O)Re, —OC(O)NRdRe, —NRdC(O)ORe, —NRdC(O)NRdRe, —CRd(N—ORe), CF3, and —OCF3;
• wherein Cy is optionally substituted with one to four substituents independently selected from Rc;
• R4 is selected from the group consisting of alkyl, substituted alkyl, alkoxy, substituted alkoxy, acyl, acylamino, thiocarbonyl-amino, acyloxy, amino, amidino, alkyl amidino, thioamidino, aminoacyl, aminocarbonylamino, aminothiocarbonylamino, aminocarbonyloxy, aryl, substituted aryl, aryloxy, substituted aryloxy, aryloxyaryl, substituted aryloxyaryl, cyano, halogen, hydroxyl, nitro, oxo, carboxyl, carboxylalkyl, carboxyl-substituted alkyl, carboxyl-cycloalkyl, carboxyl-substituted cycloalkyl, carboxylaryl, carboxyl-substituted aryl, carboxylheteroaryl, carboxyl-substituted heteroaryl, carboxylheterocyclic, carboxyl-substituted heterocyclic, cycloalkyl, substituted cycloalkyl, guanidino, guanidinosulfone, thiol, thioalkyl, substituted thioalkyl, thioaryl, substituted thioaryl, thiocycloalkyl, substituted thiocycloalkyl, thioheteroaryl, substituted thioheteroaryl, thioheterocyclic, substituted thioheterocyclic, heteroaryl, substituted heteroaryl, heterocyclic, substituted heterocyclic, cycloalkoxy, substituted cycloalkoxy, heteroaryloxy, substituted heteroaryloxy, heterocyclyloxy, substituted heterocyclyloxy, oxycarbonylamino, oxythiocarbonylamino, —OS(O)2-alkyl, —OS(O)2-substituted alkyl, —OS(O)2-aryl, —OS(O)2-substituted aryl, —OS(O)2-heteroaryl, —OS(O)2-substituted heteroaryl, —OS(O)2-heterocyclic, —OS(O)2-substituted heterocyclic, —OSO2—NRR where each R is independently hydrogen or alkyl, —NRS(O)2-alkyl, —NRS(O)2-substituted alkyl, —NRS(O)2-aryl, —NRS(O)2-substituted aryl, —NRS(O)2-heteroaryl, —NRS(O)2-substituted heteroaryl, —NRS(O)2-heterocyclic, —NRS(O)2-substituted heterocyclic, —NRS(O)2—NR-alkyl, —NRS(O)2—NR-substituted alkyl, —NRS(O)2—NR-aryl, —NRS(O)2—NR-substituted aryl, —NRS(O)2—NR-heteroaryl, —NRS(O)2—NR-substituted heteroaryl, —NRS(O)2—NR-heterocyclic, —NRS(O)2—NR-substituted heterocyclic where R is hydrogen or alkyl, —N[S(O)2—R′]2 and —N[S(O)2—NR′]2 where each R′ is independently selected from the group consisting of alkyl, substituted alkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic and substituted heterocyclic, mono- and di-alkylamino, mono- and di-(substituted alkyl)amino, mono- and di-arylamino, mono- and di-substituted arylamino, mono- and di-heteroarylamino, mono- and di-substituted heteroarylamino, mono- and di-heterocyclic amino, mono- and di-substituted heterocyclic amino, unsymmetric di-substituted amines having different substituents selected from alkyl, substituted alkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic and substituted heterocyclic and substituted alkyl groups having amino groups blocked by conventional blocking groups or alkyl/substituted alkyl groups substituted with —SO2-alkyl, —SO2-substituted alkyl, —SO2-alkenyl, —SO2-substituted alkenyl, —SO2-cycloalkyl, —SO2-substituted cycloalkyl, —SO2-aryl, —SO2-substituted aryl, —SO2-heteroaryl, —SO2-substituted heteroaryl, —SO2-heterocyclic, —SO2-substituted heterocyclic and —SO2NRR where R is hydrogen or alkyl;
• or Rb;
• X2 is selected from the group consisting of hydroxyl, alkoxy, substituted alkoxy, alkenoxy, substituted alkenoxy, cycloalkoxy, substituted cycloalkoxy, cycloalkenoxy, substituted cycloalkenoxy, aryloxy, substituted aryloxy, heteroaryloxy, substituted heteroaryloxy, heterocyclyloxy, substituted heterocyclyloxy and —NR″R″ where each R″ is independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, alkenyl, substituted alkenyl, cycloalkyl, substituted cycloalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocyclic and substituted heterocyclic;
• or Rd;
• v is an integer ranging from 0 to 3;
• and
• pharmaceutically acceptable salts thereof.