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Li C, La MP, Tang H, Sun P, Liu BS, Zhuang CL, Yi YH, Zhang W. Chemistry and Bioactivity of Briaranes from the South China Sea Gorgonian Dichotella gemmacea. Mar Drugs 2016; 14:md14110201. [PMID: 27801821 PMCID: PMC5128744 DOI: 10.3390/md14110201] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/11/2016] [Accepted: 10/12/2016] [Indexed: 11/16/2022] Open
Abstract
Seven new briarane diterpenoids, gemmacolides AZ–BF (1–7), were isolated together with eight known analogues (8–15) from the South China gorgonian Dichotella gemmacea. Their structures were elucidated based on detailed spectroscopic analysis and a comparison with reported data. In an in vitro bioassay, these compounds exhibited different levels of growth inhibition activity against A549 and MG63 cells, giving continuous evidences about the biological contribution of functional groups at C-2, C-12, C-13, and C-16. These compounds were also evaluated for their antibacterial and antifungal activities. Compound 8 exhibited a potential antibacterial activity against both Gram-positive bacterium Bacillus megaterium and Gram-negative bacterium Escherichia coli.
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Affiliation(s)
- Cui Li
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China.
| | - Ming-Ping La
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China.
| | - Hua Tang
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China.
| | - Peng Sun
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China.
| | - Bao-Shu Liu
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China.
| | - Chun-Lin Zhuang
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China.
| | - Yang-Hua Yi
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China.
| | - Wen Zhang
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China.
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Abstract
A new 19-oxygenated steroid, 25-acetate-nebrosteroid K (1), and five known steroids (2-6), along with one known 19-hydroxy steroidal glycoside (7) were obtained from the gorgonian Dichotella gemmacea collected from the South China Sea. The structure and relative configuration of 1 were elucidated by using comprehensive spectroscopic data including NOESY spectra. Compound 1 represents the first example of 19-oxygenated steroid with a 19-oic acid methyl ester group isolated from gorgonians. All of the isolated compounds were evaluated for lethal activity to brine shrimp Artemia salina and cytotoxicity against A549 and HL-60 cell lines. Among them, 1 showed strong lethality towards A. salina.
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Affiliation(s)
- Fei Cao
- a Key Laboratory of Marine Drugs, The Ministry of Education of China , School of Medicine and Pharmacy, Ocean University of China , 5 Yushan Road, Qingdao 266003 , Shandong , P.R. China
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Li C, La MP, Sun P, Kurtan T, Mandi A, Tang H, Liu BS, Yi YH, Li L, Zhang W. Bioactive (3Z,5E)-11,20-epoxybriara-3,5-dien-7,18-olide diterpenoids from the South China Sea gorgonian Dichotella gemmacea. Mar Drugs 2011; 9:1403-1418. [PMID: 21892354 PMCID: PMC3164382 DOI: 10.3390/md9081403] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 07/28/2011] [Accepted: 08/08/2011] [Indexed: 01/31/2023] Open
Abstract
Six new (3Z,5E)-11,20-epoxybriara-3,5-dien-7,18-olide diterpenoids, gemmacolides N-S (1-6), were isolated together with four known analogues, juncenolide D, and juncins R, S and U (7-10), from the South China Sea gorgonian Dichotella gemmacea. The structures of the new compounds were elucidated by the detailed analysis of spectroscopic data in combination with the comparison with reported data. The absolute configuration of 1 was determined by a TDDFT calculation of its solution ECD spectrum, affording the determination of absolute configuration of other analogues by simply comparing their ECD spectra with that of 1. The cytotoxic and antimicrobial activities of these compounds were evaluated. In preliminary in vitro bioassays, compounds 4, 5, 6, 8 and 9 showed cytotoxicity against A549 and MG63, while compounds 1, 2, 4, 7-10 showed antimicrobial activity against the fungus Septoria tritici and the bacterium Escherichia coli.
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Affiliation(s)
- Cui Li
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China; E-Mails: (C.L.); (M.-P.L.); (P.S.); (H.T.); (B.-S.L.); (Y.-H.Y.)
| | - Ming-Ping La
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China; E-Mails: (C.L.); (M.-P.L.); (P.S.); (H.T.); (B.-S.L.); (Y.-H.Y.)
| | - Peng Sun
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China; E-Mails: (C.L.); (M.-P.L.); (P.S.); (H.T.); (B.-S.L.); (Y.-H.Y.)
| | - Tibor Kurtan
- Department of Organic Chemistry, University of Debrecen, POB 20, 4010 Debrecen, Hungary; E-Mails: (T.K.); (A.M.)
| | - Attila Mandi
- Department of Organic Chemistry, University of Debrecen, POB 20, 4010 Debrecen, Hungary; E-Mails: (T.K.); (A.M.)
| | - Hua Tang
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China; E-Mails: (C.L.); (M.-P.L.); (P.S.); (H.T.); (B.-S.L.); (Y.-H.Y.)
| | - Bao-Shu Liu
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China; E-Mails: (C.L.); (M.-P.L.); (P.S.); (H.T.); (B.-S.L.); (Y.-H.Y.)
| | - Yang-Hua Yi
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China; E-Mails: (C.L.); (M.-P.L.); (P.S.); (H.T.); (B.-S.L.); (Y.-H.Y.)
| | - Ling Li
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China; E-Mails: (C.L.); (M.-P.L.); (P.S.); (H.T.); (B.-S.L.); (Y.-H.Y.)
| | - Wen Zhang
- Research Center for Marine Drugs, School of Pharmacy, Second Military Medical University, 325 Guo-He Road, Shanghai 200433, China; E-Mails: (C.L.); (M.-P.L.); (P.S.); (H.T.); (B.-S.L.); (Y.-H.Y.)
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