Sanglifehrin based compounds

1. A compound according to formula (I) below, or a pharmaceutically acceptable salt thereof:

wherein:

R 1 and R 2 independently represent alkyl, alkenyl, cycloalkyl, cycloalkenyl, alkylcycloalkyl, alkylcycloalkenyl, alkenylcycloalkyl, alkenylcycloalkenyl, aryl, heteroaryl, alkylaryl, alkylheteroaryl, alkenylaryl or alkenylheteroaryl any of which groups may optionally be substituted by monocylic aryl or monocyclic heteroaryl;

or R 1 represents hydrogen; and wherein one or more carbon atoms of R 1 and/or R 2 not being part of an aryl or heteroaryl group are optionally replaced by a heteroatom selected from O, N and S(O) p in which p represents 0, 1 or 2 and wherein one or more carbon atoms of R 1 and/or R 2 are optionally replaced by carbonyl;

or R 1 and R 2 are joined to form a saturated or unsaturated heterocyclic ring containing the nitrogen atom shown and wherein one or more carbon atoms of said ring are optionally replaced by a heteroatom selected from O, N and S(O) p in which p represents 0, 1 or 2 and wherein one or more carbon atoms of said ring are optionally replaced by carbonyl and which heterocyclic ring may optionally be fused to an aryl or heteroaryl ring;

and wherein one or more carbon atoms of an R 1 and/or R 2 group may optionally be substituted by one or more halogen atoms;

R 3 represents H, —(CO) x alkyl;

R 4 represents H or OH;

R 5 represents H, OH or ═O;

n represents a single or double bond save that when n represents a double bond R 4 represents H; and

m represents a single or double bond save that when m represents a double bond R 5 represents H;

x represents 0 or 1;

including any tautomer thereof; or an isomer thereof in which the C26, 27 C═C bond shown as trans is cis; and including a methanol adduct thereof in which a ketal is formed by the combination of the C-53 keto (if present) and the C-15 hydroxyl groups and methanol.

2. A compound according to claim 1 wherein R 1 and R 2 independently represent alkyl, alkenyl, cycloalkyl, cycloalkenyl, alkylcycloalkyl, alkylcycloalkenyl, alkenylcycloalkyl, alkenylcycloalkenyl, aryl, heteroaryl, alkylaryl, alkylheteroaryl, alkenylaryl or alkenylheteroaryl any of which groups may optionally be substituted by monocylic aryl or monocyclic heteroaryl;

or R 1 represents hydrogen; and wherein one or more carbon atoms of R 1 and/or R 2 not being part of an aryl or heteroaryl group are optionally replaced by a heteroatom selected from O, N and S(O) p in which p represents 0, 1 or 2 and wherein one or more carbon atoms of R 1 and/or R 2 are optionally replaced by carbonyl;

or R 1 and R 2 are joined to form a saturated or unsaturated heterocyclic ring containing the nitrogen atom shown and wherein one or more carbon atoms of said ring are optionally replaced by a heteroatom selected from O, N and S(O) p in which p represents 0, 1 or 2 and wherein one or more carbon atoms of said ring are optionally replaced by carbonyl and which heterocyclic ring may optionally be fused to an aryl or heteroaryl ring.

3. A compound according to claim 2 wherein R 1 represents aryl or heteroaryl substituted by monocyclic aryl or monocyclic heteroaryl, —C 1-4 alkyl, —OC 1-4 alkyl, —COC 1-4 alkyl or —C 2-4 alkenyl.

4. A compound according to claim 1 , wherein R 2 represents hydrogen, C 1-4 alkyl or C 1-4 alkenyl.

5. A compound according to claim 4 wherein R 2 represents hydrogen or C 1-4 alkyl.

6. A compound according to claim 2 wherein R 1 and R 2 together with the nitrogen to which they are attached represent a 5-7 membered heterocyclic ring.

7. A compound according to claim 1 wherein, independently or in any combination:

R 3 represents H or (CO) x C 1-4 alkyl;

n represents a single bond;

m represents single bond;

R 4 represents OH;

R 5 represents ═O.

8. A compound according to claim 1 , wherein x represents 0.

9. A compound according to claim 1 wherein:

R 1 represents OCH 3 , R 2 represents Me, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents ethyl, R 2 represents ethyl, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents —CHMe 2 , R 2 represents H, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents methyl, R 2 represents H, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents methyl, R 2 represents H, R 3 represents Me, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents —CH 2 CH═CH 2 , R 2 represents H, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents methyl, R 2 represents methyl, R 3 represents H, R 4 represents OH, n represents bond, m represents bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents —CH 2 CHMe 2 , R 2 represents —CH 2 CHMe 2 , R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents OCH 3 , R 2 represents Me, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a double bond and R 5 represents H as represented by the following structure:

 or

R 1 represents OCH 3 , R 2 represents Me, R 3 represents H, R 4 represents H, n represents a double bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 and R 2 together represent —CH 2 CH 2 OCH 2 CH 2 — connected in a 6-membered heterocycle, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

R 1 represents 4-biphenylyl, R 2 represents H, where, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents cyclohexyl, R 2 represents Me, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 and R 2 together represent —OCH 2 CH 2 CH 2 CH 2 — connected in a 6-membered heterocycle, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents 2-pyridinyl, R 2 represents H, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents cyclohexyl, R 2 represents H, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents OCH 3 , R 2 represents Me, R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents OH as represented by the following structure:

or a pharmaceutically acceptable salt of any one thereof; including any tautomer thereof; or an isomer thereof in which the C26, 27 C═C bond shown as trans is cis; and including a methanol adduct thereof in which a ketal is formed by the combination of the C-53 keto (if present) and the C-15 hydroxyl groups and methanol.

10. A compound according to claim 1 wherein:

R 1 represents OCH 3 , R 2 represents Me, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents ethyl, R 2 represents ethyl, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents —CHMe 2 , R 2 represents H, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents methyl, R 2 represents H, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

10 or

R 1 represents methyl, R 2 represents H, R 3 represents Me, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents —CH 2 CH═CH 2 , R 2 represents H, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents methyl, R 2 represents methyl, R 3 represents H, R 4 represents H, n represents bond, m represents bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents —CH 2 CHMe 2 , R 2 represents —CH 2 CHMe 2 , R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents OCH 3 , R 2 represents Me, R 3 represents H, R 4 represents H, n represents a single bond, m represents a double bond and R 5 represents H as represented by the following structure:

 or

R 1 and R 2 together represent —CH 2 CH 2 OCH 2 CH 2 — connected in a 6-membered heterocycle, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents 4-biphenylyl, R 2 represents H, where, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents cyclohexyl, R 2 represents Me, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents cyclohexyl, R 2 represents H, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 and R 2 together represent —OCH 2 CH 2 CH 2 CH 2 — connected in a 6-membered heterocycle. R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

 or

R 1 represents 2-pyridinyl, R 2 represents H, R 3 represents H, R 4 represents H, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

or a pharmaceutically acceptable salt of any one thereof; including any tautomer thereof; or an isomer thereof in which the C26, 27 C═C bond shown as trans is cis; and including a methanol adduct thereof in which a ketal is formed by the combination of the C-53 keto (if present) and the C-15 hydroxyl groups and methanol.

11. A compound according to claim 1 wherein:

R 3 represents H, R 4 represents OH, n represents a single bond, m represents a single bond and R 5 represents ═O as represented by the following structure:

wherein R 10 represents a group as shown in the following table:

or a pharmaceutically acceptable salt of any one thereof; including any tautomer thereof; or an isomer thereof in which the C26, 27 C═C bond shown as trans is cis; and including a methanol adduct thereof in which a ketal is formed by the combination of the C-53 keto (if present) and the C-15 hydroxyl groups and methanol.

12. A pharmaceutical composition comprising a compound according to claim 1 together with a pharmaceutically acceptable diluent or carrier.

13. A pharmaceutical composition comprising a compound according to claim 1 together with a pharmaceutically acceptable diluent or carrier further comprising a second or subsequent active ingredient.

14. A method of treating a HCV, HBV, or HIV infection comprising administering to a subject a therapeutically effective amount of a compound according to claim 1 .

15. A process for preparing a compound according to claim 1 which comprises reacting a compound of formula II:

wherein R 8 represents C 1-4 alkyl or benzyl;

with an aldehydic macrocycle (compound of formula III):

16. A compound according to claim 6 , wherein said 5-7 membered heterocyclic ring is a pyrrolidine, piperidine, morpholine or piperazine ring, where the 4 -nitrogen of the priperazine is optionally substituted by C 1-4 alkyl and wherein a carbon atom adjacent to a nitrogen atom within the piperazine ring is optionally replaced with carbonyl.