Results 201 to 210 of about 2,095 (251)

A semi-synthetic analog of the cembranoid sarcophine

Acta Crystallographica Section C Crystal Structure Communications, 2003
The title molecule, 2(R)-[(1E,3E,7S,8S,11E,13R)-13-hydroxy-4,8,12-trimethyl-7,8-epoxycyclotetradeca-1,3,11-trien-1-yl]propane-1,2-diol, C(20)H(32)O(4), is a semi-synthetic analog of sarcophine, the natural cembranoid of marine origin, isolated from the soft coral Sarcophyton glaucum.
Jordan K. Zjawiony, Sherief Khalifa, Frank R. Fronczek, Hesham Fahmy   +3 more
openaire   +3 more sources

A cembranoid diterpene from Cleome viscosa

Phytochemistry, 1990
Abstract A new macrocyclic diterpene (3 E ,7 E ,11 E )-20-oxocembra-3,7,11,15-tetraen-19-oic acid (cleomaldeic acid), has been isolated from Cleome viscosa .
Jasmin Jakupovic, Ruth Jente, Gabriel Ademola Olatunji, Gabriel Ademola Olatunji   +3 more
openaire   +2 more sources

ChemInform Abstract: Total Synthesis of Sarcophytol A, an Anticarcinogenic Marine Cembranoid.

ChemInform, 1994
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Hisao Takayanagi, Yasuhiro Morinaka, Yasunori Kitano   +2 more
openaire   +3 more sources

Two New Cembranoids from Croton oblongifolius

Journal of Natural Products, 1998
Two new cembranoids, crotocembraneic acid (1) and neocrotocembraneic acid (2), were isolated from the stem bark of Croton oblongifolius. Their structures were established on the basis of spectroscopic analysis.
Sitthisak Achayindee, Sophon Roengsumran, Tirayut Vilaivan, Khanitha Pudhom, Amorn Petsom, Chutima Surachetapan, Pravit Singtothong   +6 more
openaire   +3 more sources

A study on the sulfenylchlorination of cembrene and the related cembranoids

Chinese Journal of Chemistry, 1990
Abstractp‐Tolylsulfenyl chloride adds regioselectively at the C(11)  C(12) bond of cembrene 1 to give 11‐(R)‐p‐tolylthio‐1‐(S)‐cembra‐2E, 4Z, 7E, 12(20)‐tetraene 2 following a rapid HCl elimination. Two new cembranoids, 1‐(S)‐cembra‐2E, 4Z, 7E, 12(20)‐tetraene 3 and 1‐(S)‐cembra‐2E, 4Z, 7E, 11Z‐tetraen‐20‐ol 4 are prepared from 2.
Wang Wei‐Qi, Chen Qing‐Zhi, Li Yun‐Long, Liu Zhu‐Jin   +3 more
openaire   +2 more sources

Cembranoids from the Octocoral Sarcophyton ehrenbergi

Journal of Natural Products, 2010
Chemical investigation of the octocoral Sarcophyton ehrenbergi led to the isolation of six new cembranoids, (+)-12-carboxy-11Z-sarcophytoxide (1), (+)-12-methoxycarbonyl-11Z-sarcophine (3), ehrenberoxides A-C (4-6), and lobophynin C (2), along with two known compounds, (+)-sarcophytoxide (7) and (+)-sarcophine (8).
Cheng, S. Y., Wang, S. K., Chiou, S. F., Hsu, C. H., Dai, C. F., Chiang, M. Y., Duh, C. Y.   +6 more
openaire   +3 more sources

Anti‐HBV Activities of Cembranoids from the South China Sea Soft Coral Sinularia pedunculata and Their Structure Activity Relationship

Chemistry and Biodiversity
Hepatitis B Virus (HBV) infection is a global public health challenge that seriously endangers human health. Soft coral, as a major source of terpenoids, contains many structurally novel and highly bioactive compounds.
Chao Huang, Yang Jin, Ruo-Nan Sun, Kongying Hu, Li-gong Yao, Yuewei Guo, Zhenghong Yuan, Xu-Wen Li   +7 more
semanticscholar   +1 more source

Bioactive Natural, Biocatalytic, and Semisynthetic Tobacco Cembranoids

Planta Medica, 2010
The two major Nicotiana tabacum tobacco cembranoids, (1 S,2 E,4 R,6 R,7 E,11 E)-2,7,11-cembratriene-4,6-diol (1) and its C-4 epimer, exhibit a wide range of interesting biological activities. Although the tumorigenesis inhibition activity of tobacco cembranoids have been known since the mid 1980's, only a limited number of investigations have targeted ...
Mohammad A. Khanfar, Hany N. Baraka, Emad M. El-Giar, Khalid A. El Sayed, John C. Williams   +4 more
openaire   +3 more sources

Diving into the world of marine 2,11-cyclized cembranoids: a summary of new compounds and their biological activities.

Natural product reports (Print), 2020
Covering: 2010 to 2020The class of 2,11-cyclized cembranoids is particularly widespread in marine Octocorallia, especially Alcyonacea and Gorgonacea, and has been extensively studied.
Geng Li, Jeroen S. Dickschat, Yue‐Wei Guo   +2 more
semanticscholar   +1 more source

Polycyclic diterpenoids biogenetically related to the cembranoids

Chemistry of Natural Compounds, 1987
This review describes cyclocembrane compounds isolated from plants, marine organisms, and insects. A systematization of cyclized diterpenoids according to the types of carbon skeletons is given.
S. A. Shevtsov, V. A. Raldugin
openaire   +2 more sources