Compounds from soft coral, method of preparation and pharmaceutical uses thereof

A compound represented by the following general formula 1,

• wherein:
• R1 is selected from the group consisting of —H, —OH, —OC(═O)R11, —OOH, and OAc;
• R2 is selected from the group consisting of —S(C═O)CH3 and -OH;
• R3 is selected from the group consisting of —CH3 and —OH;
• R4 is selected from the group consisting of —OH and —OAc;
• R5 is selected from the group consisting of —H, —OAc, and —OC(═O)CH2CH2CH3;
• R6 is selected from the group consisting of —H, —OC(═O)CH2CH2CH3, —OC(═O)CH2CH2S(═O)CH3, and —OAc;
• R7 is selected from the group consisting of —H, —OAc, and ═O;
• R8 is —H;
• R9 is —OC(═O)CH2CH2CH3;
• R10 is —CH3;
• R11 is an alkyl group;
• and
• B is a single bond;
• or
• R1 and R2 together form the group consisting of —O— and a double bond;
• or
• R2 and R3 together form ═CH2;
• or
• R7 and R9 together form —O—;
• or
• R8 and R9 together form a double bond;
• or
• R1 and R9 together form —O—;
• or
• R9 and R10 together form ═CH2;
• or
• R2 and R8 together form a single bond;
• or
• R2 and B together form ═O and R1 and B together form ═O;
• wherein the compound is not the compound represented by the following formula 17 or, 18;