Disubstituted adamantyl derivative or pharmaceutically acceptable salt thereof, and pharmaceutical composition for suppressing cancer growth comprising same as active ingredient

A disubstituted adamantyl derivative represented by Chemical Formula 1 below or a pharmaceutically acceptable salt thereof:

• in Chemical Formula 1 above,
• R1 is —(X)—(CH2)n-R3 or
• R2 is —(Y)—(CH3)m, —(Y)—(CH2)m-R4 or
• wherein the X is O, NH, or
• the Y is NH, or
• the n is 0, 1 or 2, and the m is 0 or 1, and
• R3 or R4 is each independently C1 to C6 straight or branched chain alkyl, unsubstituted or substituted C5 to C10 aryl, or unsubstituted or substituted C5 to C9 heteroaryl,
• and
• wherein the substituted aryl or substituted heteroaryl is substituted with one or more halogens, C1 to C6 straight or branched chain alkyl;
• C1 to C6 straight or branched chain haloalkyl;
• hydroxy;
• or C1 to C6 straight or branched chain alkoxy,
• wherein, in the R2,
• are excluded.