Cannabinoid derivatives

A compound having structural formula:

• or an enantiomer, diastereomer, racemate, tautomer, or metabolite thereof, or a pharmaceutically acceptable salt, solvate or hydrate of the compound, enantiomer, diastereomer, racemate, tautomer, or metabolite, wherein
• the
• moiety is
• R1 is hydrogen, C1-C8 alkyl, C2-C8 alkenyl or C2-C8 alkynyl;
• R2 is hydrogen, C1-C8 alkyl, hydroxy, —CO2H, —CO2(C1-C8 alkyl), or oxo when attached to a ring of appropriate saturation;
• R3 is hydrogen, C1-C12 alkyl, C2-C12 alkenyl, C2-C12 alkynyl, —(OCH2CH2)0-6O(C1-C8 alkyl), —(C0-C4 alkyl)-NR3aR3b, —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl or —(C0-C4 alkyl)-heterocycloalkyl, wherein R3a and R3b are independently hydrogen or C1-C6 alkyl;
• R4a and R4b are independently hydrogen, —CO2H or —CO2(C1-C6 alkyl);
• R5 is hydrogen or
• wherein
• L5 is a direct bond or
• wherein
• R5c and R5d are independently hydrogen, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl or —(C0-C4 alkyl)-heterocycloalkyl, or R5c and R5d together with a carbon atom to which they are attached form a heterocycloalkyl or cycloalkyl ring;
• and
• R5a and R5b are independently
• C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, —(C0-C4 alkyl)C(O)(C1-C4 alkyl), —(C0-C4 alkyl)CO2(C1-C4 alkyl), —(C1-C4 alkyl)OC(O)(C1-C6 alkyl), —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl, —(C0-C4 alkyl)-heterocycloalkyl, —OH, —OR5e, —NR5fR5g or —(C1-C4 alkyl)P(O)R5hR5i, wherein
• R5e is C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, —(C0-C4 alkyl)C(O)(C1-C6 alkyl), —(C1-C4 alkyl)CO2(C1-C6 alkyl), —(C1-C4 alkyl)OC(O)(C1-C6 alkyl), —(C1-C4 alkyl)O—CO2(C1-C6 alkyl), —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl or —(C0-C4 alkyl)-heterocycloalkyl;
• R5f is hydrogen, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, —(C0-C4 alkyl)C(O)(C1-C6 alkyl), —(C0-C4 alkyl)CO2(C1-C6 alkyl), —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl or —(C0-C4 alkyl)-heterocycloalkyl;
• R5g is hydrogen or C1-C6 alkyl;
• and
• R5h and R5i are independently hydrogen, hydroxy, C1-C4 alkyl, —O(C1-C4 alkyl), aryl or —O(aryl);
• or R5a and R5b together with a phosphorus atom to which they are attached form a heterocycloalkyl ring substituted with 0-2 R5j, wherein R5j is cycloalkyl, heterocycloalkyl, aryl, or heteroaryl;
• R6 is hydrogen, hydroxy, —C(O)(C1-C4 alkyl), or
• provided R6 is not hydrogen, hydroxy or —C(O)(C1-C4 alkyl) when R5 is hydrogen, wherein
• L6 is a direct bond or
• R6c and R6d are independently hydrogen, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl or —(C0-C4 alkyl)-heterocycloalkyl, or R6c and R6d together with a carbon atom to which they are attached form a heterocycloalkyl or cycloalkyl ring;
• and
• R6a and R6b are independently
• C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, —(C0-C4 alkyl)C(O)(C1-C4 alkyl), —(C0-C4 alkyl)CO2(C1-C4 alkyl), —(C1-C4 alkyl)OC(O)(C1-C6 alkyl), —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl, —(C0-C4 alkyl)-heterocycloalkyl, —OH, —OR6, —NR6fR6g, or —(C1-C4 alkyl)P(O)R6hR6i, wherein
• R6e is C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, —(C0-C4 alkyl)C(O)(C1-C6 alkyl), —(C1-C4 alkyl)CO2(C1-C6 alkyl), —(C1-C4 alkyl)OC(O)(C1-C6 alkyl), —(C1-C4 alkyl)O—CO2(C1-C6 alkyl), —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl or —(C0-C4 alkyl)-heterocycloalkyl;
• R6f is hydrogen, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, —(C0-C4 alkyl)C(O)(C1-C6 alkyl), —(C0-C4 alkyl)CO2(C1-C6 alkyl), —(C0-C4 alkyl)-aryl, —(C0-C4 alkyl)-heteroaryl, —(C0-C4 alkyl)-cycloalkyl or —(C0-C4 alkyl)-heterocycloalkyl;
• R6g is hydrogen or C1-C6 alkyl;
• and
• R6h and R6i are independently hydrogen, hydroxy, C1-C4 alkyl, —O(C1-C4 alkyl), aryl or —O(aryl);
• or R6a and R6b together with a phosphorus atom to which they are attached form a heterocycloalkyl ring substituted with 0-2 R6j, wherein R6j is cycloalkyl, heterocycloalkyl, aryl, or heteroaryl;
• wherein
• each alkyl, alkenyl and alkynyl is unsubstituted, halogenated, substituted with one or two hydroxyl or C1-C6 alkoxy groups, or substituted with one or two oxo groups;
• each cycloalkyl has 3-10 ring carbons and is unsaturated or partially saturated, and optionally includes one or two fused cycloalkyl rings, each fused ring having 3-8 ring members, and is substituted with 0-6 R7;
• each heterocycloalkyl has 3-10 ring members and 1-3 heteroatoms where each is independently nitrogen, oxygen, phosphorus or sulfur and is saturated or partially unsaturated, and optionally includes one or two fused cycloalkyl rings, each having 3-8 ring members, and is substituted with 0-6 R7;
• each aryl is a phenyl or a naphthyl, and optionally includes one or two fused cycloalkyl or heterocycloalkyl rings, each fused cycloalkyl or heterocycloalkyl ring having 4-8 ring members, and is substituted with 0-5 R8;
• each heteroaryl is a 5-6 membered monocyclic heteroaryl ring having 1-4 heteroatoms, where each is independently nitrogen, oxygen, or sulfur or a 8-10 membered bicyclic heteroaryl having 1-5 heteroatoms where each is independently nitrogen, oxygen or sulfur, and optionally includes one or two fused cycloalkyl or heterocycloalkyl rings, each fused cycloalkyl or heterocycloalkyl ring having 4-8 ring members, and is substituted with 0-5 R8,
• in which
• each R7 is independently oxo, C1-C4 alkyl, —Cl, —F, —Br, —CN, —SF5, —N3, nitro, —C(O)RA, —SRA, —S(O)1-2RA ORA, —NRBRA, —C(O)RA, —C(O)NRBRA, —NRBC(O)RA, —C(S)NRBRA, —NRBC(S)RA, —CO2RA, —OC(O)RA, —C(O)SRA, —SC(O)RA, —C(S)ORA, —OC(S)RA, —C(S)SRA, —SC(S)RA, —S(O)1-2ORA, —OS(O)1-2RA, —S(O)1-2NRBRA, —NRBS(O)1-2RA, —OCO2RA, —OC(O)NRBRA, —NRBCO2RA, —NRBC(O)NRBRA, —SCO2RA, —OC(O)SRA, —SC(O)SRA, —SC(O)NRBRA, —NRBC(O)SRA, —OC(S)ORA, —OC(S)NRBRA, —NRBC(S)ORA, —NRBC(S)NRBRA, —SC(S)ORA, —OC(S)SRA, —SC(S)SRA, —SC(S)NRBRA, —NRBC(S)SRA, —NRBC(NRB)NRBRA or —NRBS(O)1-2NRBRA;
• and
• each R8 is independently optionally-substituted C1-C4 alkyl, —Cl, —F, —Br, —CN, —SF5, —N3, nitro, —C(O)RA, —SRA, —S(O)1-2RA, —ORA, —NRBRA, —C(O)RA, —C(O)NRBRA, —NRBC(O)RA, —C(S)NRBRA, —NRBC(S)RA, —CO2RA, —OC(O)RA, —C(O)SRA, —SC(O)RA, —C(S)ORA, —OC(S)RA, —C(S)SRA, —SC(S)RA, —S(O)1-2ORA, —OS(O)1-2RA, —S(O)1-2NRBRA, —NRBS(O)1-2RA, —OCO2RA, —OC(O)NRBRA, —NRBCO2RA, —NRBC(O)NRBRA, —SCO2RA, —OC(O)SRA, —SC(O)SRA, —SC(O)NRBRA, —NRBC(O)SRA, —OC(S)ORA, —OC(S)NRBRA, —NRBC(S)ORA, —NRBC(S)NRBRA, —SC(S)ORA, —OC(S)SRA, —SC(S)SRA, —SC(S)NRBRA, —NRBC(S)SRA, —NRBC(NRB)NRBRA or —NRBS(O)1-2NRBRA;
• wherein each RA is independently H or C1-C3 alkyl, and each RB is independently H, C1-C3 alkyl, C1-C3 fluoroalkyl, C1-C3 hydroxyalkyl, —S(O)1-2(C1-C3 alkyl), —C(O)(C1-C3 alkyl) or —CO2(C1-C3 alkyl).