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Mar. Drugs 2013, 11(12), 4788-4798; doi:10.3390/md11124788
Article

Polyhydroxylated Steroids from the South China Sea Soft Coral Sarcophyton sp. and Their Cytotoxic and Antiviral Activities

1,†
, 2,†
, 1
, 1
, 1
, 1 and 1,*
Received: 15 October 2013; in revised form: 12 November 2013 / Accepted: 12 November 2013 / Published: 2 December 2013
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Abstract: Chemical investigation on the soft coral Sarcophyton sp. collected from the South China Sea yielded three new polyhydroxylated steroids, compounds (13), together with seven known ones (410). Their structures were established by extensive spectroscopic methods and comparison of their data with those of the related known compounds. All the isolates possessed the 3β,5α,6β-trihydroxylated steroidal nucleus. The cytotoxicities against selected HL-60, HeLa and K562 tumor cell lines and anti-H1N1 (Influenza A virus (IAV)) activities for the isolates were evaluated. Compounds 2, 3 and 58 exhibited potent activities against K562 cell lines with IC50 values ranging from 6.4 to 10.3 μM. Compounds 1, 68 potently inhibited the growth of HL-60 tumor cell lines, and 6 also showed cytotoxicity towards HeLa cell lines. In addition, preliminary structure-activity relationships for the isolates are discussed. The OAc group at C-11 is proposed to be an important pharmacophore for their cytotoxicities in the 3β,5α,6β-triol steroids. Compounds 4 and 9 exhibited significant anti-H1N1 IAV activity with IC50 values of 19.6 and 36.7 μg/mL, respectively.
Keywords: soft coral; Sarcophyton sp.; polyhydroxylated steroids; cytotoxicities; anti-H1N1 activity soft coral; Sarcophyton sp.; polyhydroxylated steroids; cytotoxicities; anti-H1N1 activity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Gong, K.-K.; Tang, X.-L.; Zhang, G.; Cheng, C.-L.; Zhang, X.-W.; Li, P.-L.; Li, G.-Q. Polyhydroxylated Steroids from the South China Sea Soft Coral Sarcophyton sp. and Their Cytotoxic and Antiviral Activities. Mar. Drugs 2013, 11, 4788-4798.

AMA Style

Gong K-K, Tang X-L, Zhang G, Cheng C-L, Zhang X-W, Li P-L, Li G-Q. Polyhydroxylated Steroids from the South China Sea Soft Coral Sarcophyton sp. and Their Cytotoxic and Antiviral Activities. Marine Drugs. 2013; 11(12):4788-4798.

Chicago/Turabian Style

Gong, Kai-Kai; Tang, Xu-Li; Zhang, Gang; Cheng, Can-Ling; Zhang, Xing-Wang; Li, Ping-Lin; Li, Guo-Qiang. 2013. "Polyhydroxylated Steroids from the South China Sea Soft Coral Sarcophyton sp. and Their Cytotoxic and Antiviral Activities." Mar. Drugs 11, no. 12: 4788-4798.


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