New diamine compounds or pharmaceutically acceptable salts thereof, process for the preparation thereof and pharmaceutical composition comprising the same for treatment of cancer

A novel diamine compound or its pharmaceutically acceptable salt, its manufacturing method, and a pharmaceutical composition for the cancer treatment containing the compound are provided to improve the tumor cell growth inhibition effect. A diamine compound is represented by the formula 1, wherein R1 is H, or a C1~C4 linear or branched alkyl group; R2, R3 and R4 are identical or different one another and are independently a C1~C4 linear or branched alkyl group, a C2~C6 alkenyl group or a benzyl group substituted or unsubstituted with one substituent selected from the group consisting of an alkyl group of C1~C4, an alkoxy group of C1~C4 and a halogen atom; A is C(=O) or S(=O)2; B is a C1~C10 linear or branched alkyl group; X is a halogen atom; and n is an integer of 5 ~ 25.