Results 191 to 200 of about 2,095 (251)

Cembranoids from Boswellia species.

Phytochemistry, 2021
Frankincense of Boswellia species has long been used in traditional medicines, mainly for its interesting anti-inflammatory and anti-depressant properties of its di- and triterpenes. Boswellic acids (triterpenes) and cembranoids (diterpenes) are the major constituents of frankincense from all reported species which are responsible for the overall ...
A. Al‐Harrasi, S. Avula, R. Csuk, B. Das   +3 more
semanticscholar   +4 more sources

X-Ray Study of Cembranoids with Flexible Rings from Boswellia papyrifera Resins Allowing Structural Revisions of Misleading Structures in the Past 70 Years.

Chemistry, 2023
30 new highly oxygenated and stereogenic 14-membered macrocyclic diterpenoids, papyrifuranols A-Z (1-26) and AA-AD (27-30), and 8 known analogs were isolated from Boswellia papyrifera resins.
Madhu Babu Sura, Yan-Xia Zhu, Yongxian Cheng   +2 more
semanticscholar   +1 more source

Two New Cembranoids from the Chinese Soft Coral Sarcophyton boettgeri **

Chemistry and Biodiversity, 2023
Two new cembranoids, namely sarcoboettgerols D and E, together with four known related ones, have been isolated from the soft coral Sarcophyton boettgeri collected from Weizhou Island in the South China Sea.
Jia-Dong Yu, Mingzhi Su, Y. Gu, Dan-dan Yu, Li-gong Yao, S. Shen, Yue‐Wei Guo, Hong Wang   +7 more
semanticscholar   +1 more source

[Cembranoids and their bioactivities in soft coral Sarcophyton glaucum].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2023
Chemical constituents in soft coral Sarcophyton glaucum were separated and purified by various chromatographic methods. Based on the spectral data, physicochemical properties, and comparison with the data reported in the literature, nine cembranoids ...
Min Wu, Kai Zhou, Haofu Dai, Yanbo Zeng
semanticscholar   +1 more source

Sarcocinerenoids A–J, eight rare capnosane‐type and two new cage‐type cembranoids with promoting angiogenesis activity from the South China Sea soft coral Sarcophyton cinereum

Chinese journal of chemistry, 2023
Eight rare capnosane‐type cembranoids, sarcocinerenoids A‐H (1‐8) and two new cage‐type cembranoids sarcocinerenoids I‐J (9‐10) were isolated from the soft coral Sarcophyton cinereum. The 5/11 bicyclic carbon skeleton is the same in Sarcocinerenoids A‐H (
Yue Mi, Yanan Yang, Xuli Tang, Xiao Han, Guoqiang Li   +4 more
semanticscholar   +1 more source

New cembranoids from the leaves and twigs of Croton yanhuii Y. T. Chang

Natural Product Research, 2023
Crotonyanes A (1) and B (2), two new cembranoids were isolated from the leaves and twigs of Croton yanhuii Y. T. Chang. Their structures were elucidated by extensive spectroscopic analyses and quantum chemical calculations.
Daidi Zhang, Di Wang, Zhen-wei Li, D. Guo, Wei Li   +4 more
semanticscholar   +1 more source

Cembranoids From the Leaves of Nicotiana tabacum and Their Neuroprotective Activities

Natural Product Communications, 2022
A new cembrane-type diterpenoid (1) and 9 known cembranoids (2-10) were isolated from the leaves of Nicotiana tabacum. The structure of the new metabolite was confirmed by extensive analyses of their spectroscopic data, including high-resolution ...
Peng-fei Yang, Mei Chen, Jian-Chun Yu, Jing Yang, Qiong-bo Wang, D. Mao   +5 more
semanticscholar   +1 more source

Three New Cembranoids from a Xisha Soft Coral Sarcophyton sp.

Chemistry and Biodiversity, 2022
Chemical investigation of the Xisha soft coral Sarcophyton sp. has led to the isolation of eight cembrane‐type diterpenoids, including three new compounds, namely sarcophynoids A‐C (1–3), and five known analog compounds (4–8).
Xue Leng, J. Liu, Xiao Han, Teow-Loon Li, Han Ouyang, Xiaojun Yan, Shanna He   +6 more
semanticscholar   +1 more source

Marine cembranoid synthesis

Tetrahedron Letters, 1989
Abstract trans , trans -Farnesol can be converted to a versatile precursor for the synthesis of C-3,C-4 oxygenated marine cembranoids.
Jean M. Cullingham, Marcus A. Tius
openaire   +2 more sources

ChemInform Abstract: New Cembranoids from Plexaura

ChemInform, 1989
Abstract Three new cembranoids, dihydroplexaurolone (2) and two dehydroplexaurolones (3) and (4), have been isolated from the gorgonlan Plexaura A. The structure of 2 was established by X-ray crystallographic studies. Crystals of 2 belong to space group P21, with a = 10.711 (2) A, b = 10.976 (3) A, c = 17.148 (4) A, β = 99.99 (2)°, and Z = 4.
Louis J. Todaro, Leon S. Ciereszko, W.R. Chan, Winston F. Tinto, Percy S. Manchand   +4 more
openaire   +3 more sources