title: Bioactive sesterterpenes and triterpenes from marine sponges: occurrence and pharmacological significance.
abstract: Marine ecosystems (>70% of the planet's surface) comprise a continuous resource of immeasurable biological activities and immense chemical entities. This diversity has provided a unique source of chemical compounds with potential bioactivities that could lead to potential new drug candidates. Many marine-living organisms are soft bodied and/or sessile. Consequently, they have developed toxic secondary metabolites or obtained them from microorganisms to defend themselves against predators [1]. For the last 30-40 years, marine invertebrates have been an attractive research topic for scientists all over the world. A relatively small number of marine plants, animals and microbes have yielded more than 15,000 natural products including numerous compounds with potential pharmaceutical potential. Some of these have already been launched on the pharmaceutical market such as Prialt (ziconotide; potent analgesic) and Yondelis (trabectedin or ET-743; antitumor) while others have entered clinical trials, e.g., alpidin and kahalalide F. Amongst the vast array of marine natural products, the terpenoids are one of the more commonly reported and discovered to date. Sesterterpenoids (C(25)) and triterpenoids (C(30)) are of frequent occurrence, particularly in marine sponges, and they show prominent bioactivities. In this review, we survey sesterterpenoids and triterpenoids obtained from marine sponges and highlight their bioactivities.
authors.affiliation: Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine University, Duesseldorf, Germany. sherif.Elsayed@uni-duesseldorf.de
authors.forename: Sherif S
authors.initials: SS
authors.lastname: Ebada
authors.forename: Wenhan
authors.initials: W
authors.lastname: Lin
authors.forename: Peter
authors.initials: P
authors.lastname: Proksch
mesh_terms: D000818:Animals; D006801:Humans; D011161:Porifera / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D054830:Sesterterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D012503:Saponins; D054830:Sesterterpenes; D013729:Terpenes; D014315:Triterpenes; C045673:manoalide
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