Modulators of cellular adhesion

A compound of the structure (I):

• or pharmaceutically acceptable salts thereof;
• R1 and R2 are each independently hydrogen, —(CH2)mOH, —(CH2)maryl, —(CH2)mheteroaryl,
• wherein m is 0-6, —CH(R1A)(OR1B), —CH(R1A)(NHR1B), U-T-Q, or an aliphatic, alicyclic, heteroaliphatic or heteroalicyclic moiety optionally substituted with U-T-Q,
• wherein U is absent, —O—, —S(O)0-2—, —SO2N(R1A), —N(R1A)—, —N(R1A)C(═O)—, —N(R1A)C(═O)—O—, —N(R1A)C(═O)—N(R1B)—, —N(R1A)—SO2—, —C(═O)—, —C(═O)—O—, —O—C(═O)—, aryl, heteroaryl, alkylaryl, alkylheteroaryl, —C(═O)—N(R1A)—, —OC(═O)N(R1A)—, —C(═N—R1E)—, —C(═N—R1E)—O—, —C(═N—R1E)—N(R1A)—, —O—C(═N—R1E)—N(R1A)—, —N(R1A)C(═N—R1E)—, —N(R1A)C(═N—R1E)—O—, —N(R1A)C(═N—R1E)—N(R1B)—, —P(═O)(OR1A)—O—, or —P(═O)(R1A)—O—;
• T is absent, an aliphatic, heteroaliphatic, aryl, heteroaryl, alkylaryl or alkylheteroaryl moiety;
• and
• Q is hydrogen, halogen, cyano, isocyanate, —OR1B;
• —SR1B;
• —N(R1B)2, —NHC(═O)OR1B, —NHC(═O)N(R1B)2, —NHC(═O)R1B, —NHSO2R1B, NHSO2N(R1B)2, —NHSO2NHC(═O)OR1B, —NHC(═O)NHSO2R1B, —C(═O)NHC(═O)OR1B, C(═O)NHC(═O)R1B, —C(═O)NHC(═O)N(R1B)2, —C(═O)NHSO2R1B, —C(═O)NHSO2N(R1B)2, C(═S)N(R1B)2, —SO2R1B, —SO2OR1B, —SO2N(R1B)2, —SO2—NHC(═O)OR1B, —OC(═O)—N(R1B)2, —OC(═O)R1B, —OC(═O)NHC(═O)R1B, —OC(═O)NHSO2R1B, —OSO2R1B, or an aliphatic heteroaliphatic, aryl or heteroaryl moiety, or
• wherein R1 and R2 taken together are an alicyclic or heterocyclic moiety;
• wherein each occurrence of R1A and R1B is independently hydrogen, an aliphatic, alicyclic, heteroaliphatic, heterocyclic, aryl, heteroaryl, alkylaryl or alkylheteroaryl moiety, —C(═O)R1C, or —C(═O)NR1CR1D;
• wherein each occurrence of R1C and R1D is independently hydrogen, hydroxyl, or an aliphatic, heteroaliphatic, aryl, heteroaryl, alkylaryl or alkylheteroaryl moiety;
• and R1E is hydrogen, an aliphatic, alicyclic, heteroaliphatic, heterocyclic, aryl, heteroaryl, alkylaryl or alkylheteroaryl moiety, —CN, —OR1C, —NR1CR1D or —SO2R1C;
• R3 is —C(═O)OR3A, —C(═O)H, —CH2OR3A, —CH2OC(═O)-alkyl, —C(═O)NH(R3A), or —CH2X0;
• wherein each occurrence of R3A is independently hydrogen, a protecting group, an aliphatic, alicyclic, heteroaliphatic, heteroalicyclic, aryl, heteroaryl, alkylaryl, alkylheteroaryl, heteroalkylaryl or heteroalkylheteroaryl moiety, or pharmaceutically acceptable salt or ester, or
• R3A, taken together with R1 and R2, forms a heterocyclic moiety;
• wherein X0 is a halogen selected from F, Br or I;
• R4 for each occurrence, is independently hydrogen, halogen, —CN, —NO2, an aliphatic, alicyclic, heteroaliphatic, heteroalicyclic, aryl, heteroaryl, alkylaryl or alkylheteroaryl moiety, or is GRG1
• wherein G is —O—, —S—, NRG2—, —CO—, —SO—, —SO2—, C(═O)O—, —C(═O)NRG2—, C(═O)—, —NRG2C(═O)— or —SO2NRG2—, and RG1 and RG2 are independently hydrogen, an aliphatic, alicyclic, heteroaliphatic, heteroalicyclic, aryl, heteroaryl, alkylaryl or alkylheteroaryl moiety;
• n is an integer from 0-4;
• AR1 is a monocyclic or polycyclic aryl, heteroaryl, alkylaryl, alkylheteroaryl, alicyclic or heterocyclic moiety;
• A, B, D and E are connected by single bonds;
• wherein D is N;
• each occurrence of A, B, and E is CHRi wherein each occurrence of Ri is independently hydrogen, halogen, —CN, —NO2, an aliphatic, alicyclic, heteroaliphatic, heteroalicyclic, aryl, heteroaryl, alkylaryl or alkylheteroaryl moiety, or is -GRG1 wherein G is —O—, —S—, —NRG2, —CO—, —SO—, —C(═O)O—, —C(═O)NRG2—, —OC(═O)—, —NRG2C(═O)— or —SO2NRG2—, and RG1 and RG2 are independently hydrogen, an aliphatic, alicyclic, heteroaliphatic, heteroalicyclic, aryl, heteroaryl, alkylaryl or alkylheteroaryl moiety, or any two adjacent occurrences of taken together, represent an alicyclic, heteroalicyclic, aryl, or heteroaryl moiety;
• p is an integer from 0-4;
• and,
• L is a substituted or unsubstituted C1-6 alkylidene or C2-6 alkenylidine chain wherein up to two non-adjacent methylene units are independently optionally replaced by —C(═O).