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Journal articles on the topic 'Ircinia sp'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Abdul Wahab, Muhammad Azmi, Rocky de Nys, Ross Holzman, Caroline Luise Schneider, and Steve Whalan. "Patterns of reproduction in two co-occurring Great Barrier Reef sponges." Marine and Freshwater Research 68, no. 7 (2017): 1233. http://dx.doi.org/10.1071/mf16272.

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Reproduction is a key biological process that underpins the persistence and maintenance of populations. However, information on the reproductive biology of Great Barrier Reef (GBR) sponges is depauperate. The present study established the reproductive biology of two co-occurring GBR sponges, namely Ianthella basta (Verongida) and Ircinia sp. (Dictyoceratida). Sponges were haphazardly sampled (monthly) over a period of 1 year. Histological analysis of samples established the sexuality, development, seasonality, gametogenesis and fecundity of the two species, as well as the effects of temperatur

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2

Capon, RJ, and JK Macleod. "A New Sesterterpene Tetronic Acid From an Australian Sponge, Ircinia sp." Australian Journal of Chemistry 40, no. 7 (1987): 1327. http://dx.doi.org/10.1071/ch9871327.

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A new sesterterpene tetronic acid* (2), exhibiting antimicrobial activity, has been isolated from an Australian Ircinia species. The structure elucidation was based on detailed spectroscopic analysis of (2), its acetate (3), and two methylated derivatives (4) and (5).

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3

Sokolover, N., and M. Ilan. "Assessing anti-predatory chemical defences among ten eastern Mediterranean sponges." Journal of the Marine Biological Association of the United Kingdom 87, no. 6 (2007): 1785–90. http://dx.doi.org/10.1017/s0025315407057967.

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The palatability of organic chemical extracts from ten of the most abundant sponge species along the Israeli (shallow) coast, eastern Mediterranean Sea (Axinella sp., Axinella polypoides, Chondrilla nucula, Ircinia sp., Psammocinia sp. 1, Psammocinia sp. 2, Psammocinia sp. 3, Psammocinia sp. 4, Sarcotragus sp. and Tetilla sp.) was tested. To examine the generality of the phenomenon, it was evaluated with two types of potential predators, a fish and a gastropod. It was determined that the extracts of only two species (Psammocinia sp. 1 and Psammocinia sp. 3) deterred feeding of the omnivorous o

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4

BORGES, CAMILA C., ELIZABETH G. NEVES, and RODRIGO JOHNSSON. "A new Setacheres (Copepoda, Siphonostomatoida, Asterocheridae) associated with Ircinia felix (Duchassaing & Michelotti) (Porifera) from Brazil." Zootaxa 4363, no. 1 (2017): 129. http://dx.doi.org/10.11646/zootaxa.4363.1.6.

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Recent surveys of the copepod fauna associated with the sponge Ircinia felix (Porifera, Dictyoceratida) in Brazil resulted in the discovery of a new siphonostomatoid species belonging to a recently erected genus of Asterocheridae. Setacheres portobarrensis sp. nov. possesses a 21-segmented antennule, with 3 free distal segments, after the aesthetasc. The third exopodal segment of leg 3 shows a distal seta instead of a spine as in some other congeners. The new species shows several unique features on the third endopodal segment of the antenna, the mandibular stylet, the inner lobe of the maxill

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5

Fernández, Rogelio, Asep Bayu, Tri Aryono Hadi, et al. "Unique Polyhalogenated Peptides from the Marine Sponge Ircinia sp." Marine Drugs 18, no. 8 (2020): 396. http://dx.doi.org/10.3390/md18080396.

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Two new bromopyrrole peptides, haloirciniamide A (1) and seribunamide A (2), have been isolated from an Indonesian marine sponge of the genus Ircinia collected in the Thousand Islands (Indonesia). The planar structure of both compounds was assigned on the basis of extensive 1D and 2D NMR spectroscopy and mass spectrometry. The absolute configuration of the amino acid residues in 1 and 2 was determined by the application of Marfey’s method. Compound 1 is the first dibromopyrrole cyclopeptide having a chlorohistidine ring, while compound 2 is a rare peptide possessing a tribromopyrrole ring. Bot

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6

Zivanovic, Ana, Natalie J. Pastro, Jane Fromont, Murray Thomson, and Danielle Skropeta. "Kinase Inhibitory, Haemolytic and Cytotoxic Activity of Three Deep-water Sponges from North Western Australia and their Fatty Acid Composition." Natural Product Communications 6, no. 12 (2011): 1934578X1100601. http://dx.doi.org/10.1177/1934578x1100601233.

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The cAMP dependent protein kinase (PKA) inhibition, haemolytic activity, and cytoxicity of 21 extracts obtained from North Western Australian sponges collected from depths of 84-135 m were investigated. Hexane extracts from Ircinia/Sarcotragus sp. and Geodia sp. displayed PKA inhibitory activities of 100 and 97% respectively (at 100 μg/mL), while aq. methanol extracts from Haliclona sp. exhibited potent haemolytic activity (75%) and hexane extracts from Geodia sp. were highly toxic (88%) to the brine shrimp Artemia franciscana. As the non-polar extracts gave the greatest PKA inhibition, these

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7

Mitova, Maya, Giuseppina Tommonaro, and Salvatore De Rosa. "A Novel Cyclopeptide from a Bacterium Associated with the Marine Sponge Ircinia muscarum." Zeitschrift für Naturforschung C 58, no. 9-10 (2003): 740–45. http://dx.doi.org/10.1515/znc-2003-9-1026.

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AbstractA new cyclotetrapeptide 1, together with three known cyclopeptides were isolated from the exo-cellular extract of Pseudomonas sp. a bacterium associated with the sponge Ircinia muscarum. The structure of 1 was suggested on the basis of spectroscopic analytical data and chemical degradation.

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8

Müller, Elmar L., and D. John Faulkner. "Absolute configuration of halisulfate 3 from the sponge Ircinia sp." Tetrahedron 53, no. 15 (1997): 5373–78. http://dx.doi.org/10.1016/s0040-4020(97)00202-0.

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9

Yang, Inho, Hyukjae Choi, Dong Hwan Won, Sang-Jip Nam, and Heonjoong Kang. "An Antibacterial 9,11-Secosterol from a Marine Sponge Ircinia sp." Bulletin of the Korean Chemical Society 35, no. 11 (2014): 3360–62. http://dx.doi.org/10.5012/bkcs.2014.35.11.3360.

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10

Kuramoto, Makoto, Tohru Fujita, and Noboru Ono. "ChemInform Abstract: Ircinamine, a Novel Cytotoxic Alkaloid from Ircinia sp." ChemInform 33, no. 37 (2010): no. http://dx.doi.org/10.1002/chin.200237217.

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11

YANG, SHU-WEI, TZE-MING CHAN, SHIRLEY A. POMPONI, et al. "A New Sesterterpene, Sch 599473, from a Marine Sponge, Ircinia sp." Journal of Antibiotics 56, no. 9 (2003): 783–86. http://dx.doi.org/10.7164/antibiotics.56.783.

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12

Maradou, Remus B., Fitje Losung, Remmy EP Mangindaan, Rosita AJ Lintang, Wilmy E. Pelle, and Hariyani Sambali. "UJI AKTIVITAS ANTIBAKTERI BEBERAPA SPONS DARI PERAIRAN SALIBABU KEPULAUAN TALAUD." JURNAL PESISIR DAN LAUT TROPIS 7, no. 3 (2019): 234. http://dx.doi.org/10.35800/jplt.7.3.2019.24511.

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ABSTRAKSpons merupakan salah satu komponen terumbu karang yang berpotensi sebagai senyawa bioaktif namun belum banyak dimanfaatkan. Penelitian ini diarahkan untuk menperoleh beberapa ekstrak kasar spons dari perairan Salibabu Kepulauan Talaud, menentukan aktivitas antibakteri dari beberapa ekstrsk kasar spons serta membandingkan aktivitas antibakteri fraksi spons terhadap bakteri uji E. coli dan S. aureus. Hasil identifikasi spons ditemukan sebanyak tiga spesies yang terdiri dari: Siphonodictyon sp., Ircinia sp., Dysidea sp. Pengujian aktivitas antibakteri ekstrak kasar, fraksi air, metanol da

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13

Tanaka, Junichi, Masayuki Kuniyoshi, Chiaki Tanaka, et al. "Diverse metabolites of coral reef organisms." Pure and Applied Chemistry 77, no. 1 (2005): 83–89. http://dx.doi.org/10.1351/pac200577010083.

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A detailed mechanism for the spontaneous transformation of 2-chloro-1-hydroxyoctoda-3(8),5-dien-4-one, a metabolite of Portieria hornemanni, into 4,5-dimethylbenzo[b]furan was presented. Five new terpenoids have been isolated from the red alga Laurencia luzonensis. Five species of sponges yielded various metabolites: furanosesterterpenes from Ircinia sp., scalarane derivatives from Phyllospongia sp., polyketides from Theonella cf. swinhoei, a polyacetylene from Callyspongia sp., and cyclic depsipeptides from Suberites japonicus. Other new metabolites were sponge-derived secomanoalide derivativ

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14

Singh, Keisham Sarjit, and Werner Kaminsky. "Isolation and X-ray Structure of Deoxycholic Acid from the Sponge Ircinia sp." Natural Product Communications 6, no. 9 (2011): 1934578X1100600. http://dx.doi.org/10.1177/1934578x1100600906.

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Ethyl acetate extract of the sponge Ircinia sp., collected by SCUBA divers off the coast of southern India, contained a cholest-based sterol of insignificant antimicrobial activity, with one carboxylic acid side chain (3α, 7β-dihydroxy-5β-cholan-24-oic acid, DCA). The structure of the compound was determined by spectroscopic data and single crystal X-ray diffraction studies. DCA crystallizes in the tetragonal space group P41212, chirality documented by solution optical rotation [α]D = +67.4° ( c 0.16, CHCl3).

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15

Shinonaga, Hideki, Hideyuki Shigemori, and Jun'ichi Kobayashi. "Konbamidin, a New Indole Alkaloid from the Okinawan Marine Sponge Ircinia sp." Journal of Natural Products 57, no. 11 (1994): 1603–5. http://dx.doi.org/10.1021/np50113a026.

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16

Hahn, Dongyup, Jungwook Chin, Hiyoung Kim та ін. "Sesquiterpenoids with PPARδ agonistic effect from a Korean marine sponge Ircinia sp." Tetrahedron Letters 55, № 34 (2014): 4716–19. http://dx.doi.org/10.1016/j.tetlet.2014.07.019.

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17

MUELLER, E. L., and D. J. FAULKNER. "ChemInform Abstract: Absolute Configuration of Halisulfate 3 from the Sponge Ircinia sp." ChemInform 28, no. 30 (2010): no. http://dx.doi.org/10.1002/chin.199730173.

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18

Yang, Inho, Hyukjae Choi, Dong Hwan Won, Sang-Jip Nam, and Heonjoong Kang. "ChemInform Abstract: An Antibacterial 9,11-Secosterol from a Marine Sponge Ircinia sp." ChemInform 46, no. 15 (2015): no. http://dx.doi.org/10.1002/chin.201515271.

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19

Maradou, Remus B., Fitje Losung, Remmy EP Msngindaan, Rosita AJ Lintang, Wilmy E. Pelle, and Hariyani Sambali. "UJI AKTIVITAS ANTIBAKTERI BEBERAPA SPONS DARI PERAIRAN SALIBABU KEPULAUAN TALAUD." JURNAL PESISIR DAN LAUT TROPIS 7, no. 3 (2019): 234. http://dx.doi.org/10.35800/jplt.7.3.2019.24495.

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Sponge is one component of coral reefs that has the potential as a bioactive compound but has not been widely used. This study was directed to obtain some spongy crude extracts from the Salibabu waters of the Talaud Islands, determine the antibacterial activity of some crude extruded sponges and compare the antibacterial activity of the sponge fraction against E. coli and S. aureus test bacteria. The results of identification of sponges were found in three species consisting of: Siphonodictyon sp., Ircinia sp., Dysidea sp. The antibacterial activity of crude extract, water, methanol and hexane

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20

Lee, Hyi-Seung, Hye-Kyeong Kim, Yeon-Ju Lee, et al. "Identification of New Polyprenyl Hydroquinone Derivatives from Tropical Marine Sponge lrcinia Ircinia sp." HETEROCYCLES 85, no. 6 (2012): 1437. http://dx.doi.org/10.3987/com-12-12454.

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21

Fontana, Angelo, Issa Fakhr, Ernesto Mollo, and Guido Cimino. "(−)-Wistarin from the marine sponge Ircinia sp.: the first case of enantiomeric sesterterpenes." Tetrahedron: Asymmetry 10, no. 20 (1999): 3869–72. http://dx.doi.org/10.1016/s0957-4166(99)00406-1.

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22

Su, Jing, Fengli Zhang, Wei Sun, et al. "A new alkaline lipase obtained from the metagenome of marine sponge Ircinia sp." World Journal of Microbiology and Biotechnology 31, no. 7 (2015): 1093–102. http://dx.doi.org/10.1007/s11274-015-1859-5.

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23

Lee, On On, Stanley C. K. Lau, Mandy M. Y. Tsoi, et al. "Shewanella irciniae sp. nov., a novel member of the family Shewanellaceae, isolated from the marine sponge Ircinia dendroides in the Bay of Villefranche, Mediterranean Sea." International Journal of Systematic and Evolutionary Microbiology 56, no. 12 (2006): 2871–77. http://dx.doi.org/10.1099/ijs.0.64562-0.

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Strain UST040317-058T, comprising non-pigmented, rod-shaped, facultatively anaerobic, Gram-negative cells that are motile by means of single polar flagella, was isolated from the surface of a marine sponge (Ircinia dendroides) collected from the Mediterranean Sea. Comparative 16S rRNA gene sequence-based phylogenetic analysis placed the strain in a separate cluster with the recognized bacterium Shewanella algae IAM 14159T, with which it showed a sequence similarity of 95.0 %. The sequence similarity between strain UST040317-058T and its other (six) closest relatives ranged from 91.6 to 93.8 %.

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24

Chen, Huiqin, Nihal Aktas, Belma Konuklugil, et al. "A new fusarielin analogue from Penicillium sp. isolated from the Mediterranean sponge Ircinia oros." Tetrahedron Letters 56, no. 39 (2015): 5317–20. http://dx.doi.org/10.1016/j.tetlet.2015.07.072.

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25

Lee, Hyi-Seung, Yeon-Ju Lee, Jong Wook Lee, et al. "ChemInform Abstract: Identification of New Polyprenyl Hydroquinone Derivatives from Tropical Marine Sponge Ircinia sp." ChemInform 43, no. 41 (2012): no. http://dx.doi.org/10.1002/chin.201241197.

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26

Hahn, Dongyup, Jungwook Chin, Hiyoung Kim та ін. "ChemInform Abstract: Sesquiterpenoids with PPARδ Agonistic Effect from a Korean Marine Sponge Ircinia sp." ChemInform 46, № 5 (2015): no. http://dx.doi.org/10.1002/chin.201505200.

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27

Abdjul, Delfly B., Hiroyuki Yamazaki, Kazuyo Ukai, and Michio Namikoshi. "Two new indole derivatives from a marine sponge Ircinia sp. collected at Iriomote Island." Journal of Natural Medicines 69, no. 3 (2015): 416–20. http://dx.doi.org/10.1007/s11418-015-0891-y.

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28

Bifulco, Giuseppe, Ines Bruno, Luigi Minale, et al. "Bioactive Prenylhydroquinone Sulfates and a Novel C31Furanoterpene Alcohol Sulfate from the Marine Sponge, Ircinia Sp." Journal of Natural Products 58, no. 9 (1995): 1444–49. http://dx.doi.org/10.1021/np50123a017.

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29

Fontana, Angelo, Issa Fakhr, Ernesto Mollo, and Guido Cimino. "ChemInform Abstract: (-)-Wistarin from the Marine Sponge Ircinia sp.: The First Case of Enantiomeric Sesterterpenes." ChemInform 31, no. 8 (2010): no. http://dx.doi.org/10.1002/chin.200008210.

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30

Yang, Inho, Hyukjae Choi, Sang-Jip Nam, and Heonjoong Kang. "A new 9,11-secosterol with a 1,4-quinone from a Korean marine sponge Ircinia sp." Archives of Pharmacal Research 38, no. 11 (2015): 1970–74. http://dx.doi.org/10.1007/s12272-015-0620-9.

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31

Kawakami, Ayako, Tomofumi Miyamoto, Ryuichi Higuchi, Takeshi Uchiumi, Michihiko Kuwano, and Rob W. M. Van Soest. "Structure of a novel multidrug resistance modulator, irciniasulfonic acid, isolated from a marine sponge, Ircinia sp." Tetrahedron Letters 42, no. 19 (2001): 3335–37. http://dx.doi.org/10.1016/s0040-4039(01)00426-9.

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32

Abbamondi, Gennaro Roberto, Salvatore De Rosa, Carmine Iodice, and Giuseppina Tommonaro. "Cyclic Dipeptides Produced by Marine Sponge-Associated Bacteria as Quorum Sensing Signals." Natural Product Communications 9, no. 2 (2014): 1934578X1400900. http://dx.doi.org/10.1177/1934578x1400900225.

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Four bacterial strains belonging to the genera Vibrio, Pseudoalteromonas and Photobacterium were isolated from the marine sponges Dysidea avara and Geodia cynodium. A Bacillus strain was isolated from Ircinia variabilis. A screening of molecules involved in quorum sensing (QS) was carried out by TLC-overlay and a new “plate T-streak” test. To analyze quorum quenching (QQ), a plate T-streak was performed with Chromobacterium violaceum. Strains of Vibrio isolated from both marine sponges and a strain of Photobacterium isolated from G. cynodium, activated QS bioreporters. A strain of Pseudoaltero

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33

Meng, Ling-Hong, Hui-Qin Chen, Imke Form, Belma Konuklugil, Peter Proksch, and Bin-Gui Wang. "New Chromone, Isocoumarin, and Indole Alkaloid Derivatives from three Sponge-derived Fungal Strains." Natural Product Communications 11, no. 9 (2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100927.

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Two new chromone derivatives, 2-hydroxymethyl-3-methyl-7-methoxychromone (1) and 2-hydroxymethyl-3- tert-butyl-7-methoxychromone (2), together with a related known compound, 2,3-dimethyl-7-methoxychromone (3), were isolated from Rhinocladiella sp. (IO2), a fungus obtained from the sponge Ircinia oros. Furthermore, a new isocoumarin derivative, 3-(3-chloro-2-hydroxypropyl)-8-hydroxy-6-methoxy-isochromen-1-one (4) and a known analogue 3-[( R)-3,3-dichloro-2-hydroxypropyl]-8-hydroxy-6-methoxy-1 H-isochromen-1-one (dichlorodiaportin, 5), were identified from sponge-derived fungal strain Clonostach

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34

Tatli, Irem I., F. Kong, Xidong Feng, Guy Carter, Karumanchi V. Rao, and Mark T. Hamann. "7-Methyl-9-oxo-dec-7-eneoic acid from the Red Sea sponge Ircinia sp." Journal of Chemical Research 2008, no. 1 (2008): 50–51. http://dx.doi.org/10.3184/030823408x287131.

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35

Emura, Chisato, Ryuichi Higuchi, and Tomofumi Miyamoto. "Irciniasulfonic acid B, a novel taurine conjugated fatty acid derivative from a Japanese marine sponge, Ircinia sp." Tetrahedron 62, no. 24 (2006): 5682–85. http://dx.doi.org/10.1016/j.tet.2006.03.087.

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36

Prokof'eva, Nina G., Natalia I. Kalinovskaya, Pavel A. Luk'yanov, Elena B. Shentsova, and Tatiana A. Kuznetsova. "The membranotropic activity of cyclic acyldepsipeptides from bacterium Bacillus pumilus, associated with the marine sponge Ircinia sp." Toxicon 37, no. 5 (1999): 801–13. http://dx.doi.org/10.1016/s0041-0101(98)00219-0.

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37

Kondo, Kazuhiko, Hideyuki Shigemori, Yumiko Kikuchi, Masami Ishibashi, Takuma Sasaki, and Junichi Kobayashi. "Ircinals A and B from the Okinawan marine sponge Ircinia sp.: plausible biogenetic precursors of manzamine alkaloids." Journal of Organic Chemistry 57, no. 8 (1992): 2480–83. http://dx.doi.org/10.1021/jo00034a052.

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38

Kokubo, Susumu, Kentaro Yogi, Md Jasim Uddin, et al. "ChemInform Abstract: Kohamaic Acids A and B, Novel Cytotoxic Sesterterpenic Acids, from the Marine Sponge Ircinia sp." ChemInform 32, no. 24 (2010): no. http://dx.doi.org/10.1002/chin.200124175.

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39

Kawakami, Ayako, Tomofumi Miyamoto, Ryuichi Higuchi, Takeshi Uchiumi, Michihiko Kuwano, and Rob W. M. Van Soest. "ChemInform Abstract: Structure of a Novel Multidrug Resistance Modulator, Irciniasulfonic Acid, Isolated from a Marine Sponge, Ircinia sp." ChemInform 32, no. 32 (2010): no. http://dx.doi.org/10.1002/chin.200132229.

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40

Takada, Noboru, Hiroko Sato, Kiyotake Suenaga, et al. "Isolation and structures of haterumalides NA, NB, NC, ND, and NE, novel macrolides from an Okinawan Sponge Ircinia sp." Tetrahedron Letters 40, no. 34 (1999): 6309–12. http://dx.doi.org/10.1016/s0040-4039(99)01291-5.

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41

Kobayashi, Jun'ichi, Hideki Shinonaga, Hideyuki Shigemori, Akemi Umeyama, Noboru Shoji, and Shigenobu Arihara. "Xestobergsterol C, a New Pentacyclic Steroid from the Okinawan Marine Sponge Ircinia sp. and Absolute Stereochemistry of Xestobergsterol A." Journal of Natural Products 58, no. 2 (1995): 312–18. http://dx.doi.org/10.1021/np50116a029.

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42

Takada, Noboru, Hiroko Sato, Kiyotake Suenaga, et al. "ChemInform Abstract: Isolation and Structures of Haterumalides NA, NB, NC, ND, and NE, Novel Macrolides from an Okinawan Sponge Ircinia sp." ChemInform 30, no. 42 (2010): no. http://dx.doi.org/10.1002/chin.199942279.

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43

LOYA, Shoshana, Amira RUDI, Yoel KASHMAN, and Amnon HIZI. "Mode of inhibition of HIV reverse transcriptase by 2-hexaprenylhydroquinone, a novel general inhibitor of RNA-and DNA-directed DNA polymerases." Biochemical Journal 324, no. 3 (1997): 721–27. http://dx.doi.org/10.1042/bj3240721.

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A natural compound from the Red Sea sponge Ircinia sp., 2-hexaprenylhydroquinone (HPH), has been shown to be a general inhibitor of retroviral reverse transcriptases (from HIV-1, HIV-2 and murine leukaemia virus) as well as of cellular DNA polymerases (Escherichia coli DNA polymerase I, and DNA polymerases α and β). The pattern of inhibition was found to be similar for all DNA polymerases tested. Thus the mode of inhibition was studied in detail for HIV-1 reverse transcriptase. HPH is a non-competitive inhibitor and binds the enzyme irreversibly with high affinity (Ki = 0.62 μM). The polar hyd

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44

Sánchez-Lozano, Ilse, Claudia Judith Hernández-Guerrero, Mauricio Muñoz-Ochoa, and Claire Hellio. "Biomimetic Approaches for the Development of New Antifouling Solutions: Study of Incorporation of Macroalgae and Sponge Extracts for the Development of New Environmentally-Friendly Coatings." International Journal of Molecular Sciences 20, no. 19 (2019): 4863. http://dx.doi.org/10.3390/ijms20194863.

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Biofouling causes major economic losses in the maritime industry. In our site study, the Bay of La Paz (Gulf of California), biofouling on immersed structures is a major problem and is treated mostly with copper-based antifouling paints. Due to the known environmental effect of such treatments, the search for environmentally friendly alternatives in this zone of high biodiversity is a priority to ensure the conservation and protection of species. The aim of this work was to link chemical ecology to marine biotechnology: indeed, the natural defense of macroalgae and sponge was evaluated against

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45

Lerata, Mookho S., Sarah D’Souza, Nicole R. S. Sibuyi, et al. "Encapsulation of Variabilin in Stearic Acid Solid Lipid Nanoparticles Enhances Its Anticancer Activity in Vitro." Molecules 25, no. 4 (2020): 830. http://dx.doi.org/10.3390/molecules25040830.

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The use of natural products as chemotherapeutic agents is well established; however, many of these are associated with undesirable side effects, including high toxicity and instability. Furthermore, the development of drug resistant cancers makes the search for new anticancer lead compounds a priority. In this study, the extraction of an Ircinia sp. sponge resulted in the isolation of an inseparable mixture of (7E,12E,20Z)-variabilin (1) and (7E,12Z,20Z)-variabilin (2) and structural assignment was established using standard 1D and 2D NMR experiments. The cytotoxic activity of the compound aga

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46

Yang, Shu-Wei, and et al et al. "A New Sesterterpene, Sch 599473, from a Marine Sponge, Ircinia sp." ChemInform 35, no. 10 (2004). http://dx.doi.org/10.1002/chin.200410171.

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47

Krishnan, Pandian. "Antimicrobial Activity of Ircinia sp; a Marine Sponge and Its Associated Bacteria from Andaman Coast." Advances in Animal and Veterinary Sciences 2, no. 1 (2014). http://dx.doi.org/10.14737/journal.aavs/2014.2.1.37.41.

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ORTIZ GARCIA, M., and A. D. RODRIGUEZ. "ChemInform Abstract: Palominin, a Novel Furanosesterterpene from a Caribbean Sponge Ircinia sp." ChemInform 21, no. 24 (1990). http://dx.doi.org/10.1002/chin.199024285.

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Tatli, I. Irem, F. Kong, Xidong Feng, Guy Carter, Karumanchi V. Rao, and Mark T. Hamann. "ChemInform Abstract: 7-Methyl-9-oxo-dec-7-eneoic Acid from the Red Sea Sponge Ircinia sp." ChemInform 39, no. 34 (2008). http://dx.doi.org/10.1002/chin.200834216.

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Chen, Huiqin, Nihal Aktas, Belma Konuklugil, et al. "ChemInform Abstract: A New Fusarielin Analogue(I) from Penicillium sp. Isolated from the Mediterranean Sponge Ircinia oros." ChemInform 47, no. 3 (2016). http://dx.doi.org/10.1002/chin.201603188.

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