Results 71 to 80 of about 1,858 (240)

A macrolactonisation approach to the cembrane carbocycle of bielschowskysin

Tetrahedron Letters, 2013
By judicious choice of a conformationally constraining unit to predispose cyclisation to a 15-membered ring, we present a straightforward strategy to a cembranolide precursor of bielschowskysin by the Sonogashira coupling of two readily prepared fragments (from D-glucose and L-malic acid) followed by a facile beta-acylketene macrolactonisation reaction.
Martin J. Lear, Martin J. Lear, Eugene G. Yang, Karthik Sekar   +3 more
openaire   +2 more sources

Sarcocrassocolides M–O, Bioactive Cembranoids from the Dongsha Atoll Soft Coral Sarcophyton crassocaule [PDF]

, 2012
Three new cembranoids, sarcocrassocolides M–O (1–3), have been isolated from the soft coral Sarcophyton crassocaule. The structures of the metabolites were determined by extensive spectroscopic analysis.
Bo-Wei Chen, Chang-Feng Dai, Chen, Chiung-Yao Huang, Jui-Hsin Su, Jyh-Horng Sheu, Lin, Scudiero, Wan-Yu Lin, Wang, Yao-Haur Kuo, Yi Lu, Zhi-Hong Wen   +12 more
core   +3 more sources

Numerosol A–D, New Cembranoid Diterpenes from the Soft Coral Sinularia numerosa

Marine Drugs, 2014
Four new cembrane-type diterpenes; numerosol A–D (1–4); along with a known steroid; gibberoketosterol (5); were isolated from the Taiwanese soft coral Sinularia numerosa.
Yen-Ju Tseng, Yuan-Chien Yang, Shang-Kwei Wang, Chang-Yih Duh   +3 more
doaj   +1 more source

Sarcophyolides B–E, New Cembranoids from the Soft Coral Sarcophyton elegans

Marine Drugs, 2013
Four new cembrane-type diterpenoids, sarcophyolides B–E (1–4), along with 11 known analogues were isolated from the soft coral Sarcophyton elegans. The structures of new compounds 1–4 were established on the basis of spectroscopic analysis and chemical ...
Leen van Ofwegen, Peter Proksch, Dong Liu, Wei Bie, Wei Chen, Zhifang Xi, Wenhan Lin   +6 more
doaj   +1 more source

Bioactive Cembranoids from the Dongsha Atoll Soft Coral Sarcophyton crassocaule [PDF]

, 2011
Seven new cembranoids, sarcocrassocolides F–L (1–7), have been isolated from a soft coral Sarcophyton crassocaule. Their structures were determined by extensive spectroscopic analysis. Most new compounds exhibited significant cytotoxic activity against a
Ahmed, Ahmed, Alley, Bensemhoun, Bishara, Chang-Feng Dai, Chao, Chen, Cheng, Cheng, Cheng, Huang, Huang, Iguchi, Iwashima, Jean, Jean, Jui-Hsin Su, Jyh-Horng Sheu, König, Lin, Lu, Lu, Marrero, Rashid, Scudiero, Sheu, Sheu, Shi, Su, Su, Wan-Yu Lin, Yao-Haur Kuo, Yi Lu, Zhi-Hong Wen   +34 more
core   +3 more sources

Environmentally Friendly Antifouling Metabolites from Red Sea Organisms

Journal of Chemistry, Volume 2019, Issue 1, 2019., 2019
Seventy‐one marine organisms representing different classes of marine fauna and flora were collected from the Red Sea. They include sponges, hydrozoan, soft corals, sea cucumber, ascidian, cyanobacteria, and macroalgae. The methanolic extracts were evaluated for their toxicity and settlement inhibition effects by using cultured Balanus amphitrite ...
Sultan Semran Al-Lihaibi, Ahmed Abdel-Lateff, Walied Mohamed Alarif, Hajer Saeed Alorfi, Yasuyuki Nogata, Tatsufumi Okino, Mariana A. Reis   +6 more
wiley   +1 more source

Structural, stereochemical, and bioactive studies of cembranoids from Chinese soft coral Sarcophyton trocheliophorum [PDF]

, 2018
LBK
Guo, Yue-Wei, Kurtán, Tibor, Lan, Le-Fu, Li, Jia, Liang, Lin-Fu, Mándi, Attila, Yao, Li-Gong   +6 more
core   +1 more source

Ovatodiolide of Anisomeles indica Exerts the Anticancer Potential on Pancreatic Cancer Cell Lines through STAT3 and NF‐κB Regulation

Evidence-Based Complementary and Alternative Medicine, Volume 2016, Issue 1, 2016., 2016
Pancreatic cancer is the eighth leading cause of cancer death worldwide. Patients with pancreatic cancer are normally diagnosed at an advanced stage and present poor survival rate. Ovatodiolide (OV), a bioactive macrocyclic diterpenoid isolated from Anisomeles indica, showed cytotoxicity effects in pancreatic cancer cells by inhibiting cell ...
Ya-Ju Hsieh, Sung-Pin Tseng, Yu-Hsuan Kuo, Tain-Lu Cheng, Chiao-Yu Chiang, Yew-Min Tzeng, Wan-Chi Tsai, Jae Youl Cho   +7 more
wiley   +1 more source

Novel phylogenetic analysis of the Mesozoic common gymnosperm Xenoxylon Gothan reveals close affinity with extant Podocarpaceae (Coniferales)

Journal of Systematics and Evolution, Volume 63, Issue 2, Page 469-478, March 2025.
We perform a phylogenetic analysis of the Mesozoic common gymnosperm Xenoxylon to understand the systematic relationship with extant conifers. Data come from four nucleotide regions (trnL‐F, trnK‐matK, rbcL, psbA‐trnH), xylological characters, and biomolecular composition of five extant conifer families and extinct Xenoxylon. Using maximum parsimony in
Aowei Xie, Shook Ling Low, Yongdong Wang, Ning Tian, Dieter Uhl   +4 more
wiley   +1 more source

New Diterpenes with Potential Antitumoral Activity Isolated from Plants in the Years 2017-2022 [PDF]

, 2022
Diterpenes represent a wider class of isoprenoids, with more than 18,000 isolated compounds, and are present in plants, fungi, bacteria, and animals in both terrestrial and marine environments. Here, we report on the fully characterised structures of 251
Forzato, Cristina, Nitti, Patrizia
core   +1 more source