Peptoid compounds

A compound of the formula (I):

• wherein
• A is 3,6-linked 9H carbazole;
• Q is hydrogen;
• Z is —CH2′
• R2 is selected from hydrogen, hydroxy, C1-C6 alkyl, C1-C6 alkoxy, —N(R13)2 and —N(R12)—COCHR2aR2b;
• where R2a and R2b are selected from hydrogen, hydroxy, C1-C6 alkyl, C1-C6 alkoxy, —N(R13)2 and —N(R12)—COR14;
• where each R13 is independently selected from hydrogen and C1-C6 alkyl, and where R12 and R13 are selected from hydrogen and C1-C6 alkyl, and where R14 is selected from hydrogen, hydroxyl, C1-C6 alkyl, C1-C6 alkoxy and —NR12;
• R3, R4 and R5 are independently selected from hydrogen and C1-C6 alkyl;
• R6 is —CO2R15, —CONHR16, —CONHOR16, —CONHNHR16, —SO2N(R16)2, —SO2R17 or —P(O)(OR18)(OR18) where each R15, R16, R17 and R18 is independently selected from hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C6-C10 aryl and C7-C10 arylalkyl;
• W is —O— or CR10R11 where R10 and R11 are independently selected from hydrogen, hydroxy, C1-C6 alkyl, C6-C10 aryl, C1-C6 alkoxy and —N(R13)2 and where each R13 is independently selected from hydrogen and C1-C6 alkyl, and where R12 is selected from hydrogen and C1-C6 alkyl;
• Y is an unsubsitituted amino group or a guanidino group, or their hydrochloride salts;
• is a single or double bond;
• R7 and R8a are hydrogen or are absent if is a double bond;
• and
• R8b and R9 are hydrogen and X is —(CR10R11)u—, —O(CH2)u—, —CH═CH—, —O(CR10R11)CH═CH—or —CR10R11—CH═CH— where R10 and R11 hydrogen and u is an integer selected from 2 to 3 or
• R8b and R9 together form a covalent bond between X and the carbon to which R8b is attached, and X is selected from —(CR10R11)x— or —O(CH2)x— wherein R10 and R11 are hydrogen and x is an integer from 1 to 4;
• m, and t are independently selected from 0 or 1;
• r is 1;
• p is an integer selected from 0 to 6, provided that when W is —O—, p is at least 1;
• and
• q is independently selected from 0 to 4;
• or a pharmaceutically acceptable salt thereof.