Results 121 to 130 of about 436 (149)

Survey of Briarane-Type Diterpenoids of Marine Origin

HETEROCYCLES, 2002
The structures, names, biological activities, and references of two hundred ninety-nine marine original briarane-type metabolites are described and compiled in tabular form in this review. All briarane-type natural products are obtained from marine invertebrates, including various octocorals, a nudibranch, and a sponge.
Ping-Jyun Sung, Jyh-Horng Sheu, Jun-Ping Xu   +2 more
openaire   +1 more source

Briarenolides A–C, briarane diterpenoids from the gorgonian coral Briareum sp.

Tetrahedron, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Jyh-Horng Sheu, Ping-Jyun Sung, Jui-Hsin Su   +2 more
exaly   +2 more sources

Toward the Briarane Core via 1,3-Dipolar Cycloaddition

Organic Letters
The complete C20 framework of brianthein W was established, featuring hydroboration/allylation, to provide the C1-C2 quaternary/tertiary stereoarray with excellent stereocontrol. Intramolecular nitrile oxide cycloaddition (INOC) was adopted as the key transformation to establish the trans-fused 6/10-bicyclic ring system.
Yichen Liu, Jiangang Zhao, Ran Hong
openaire   +2 more sources

Juncenolide A, a New Briarane from the Taiwanese Gorgonian Junceella juncea

Journal of Natural Products, 2001
Fractionation of the acetone extract of Junceella juncea collected in Taiwan resulted in the isolation of a new briarane, designated juncenolide A (1). The structure of 1 was determined on the basis of 2D NMR techniques, including COSY, HSQC, HMBC, and NOESY experiments, and was also confirmed by X-ray crystallographic analysis.
Ya-Ching, Shen, Yu-Chi, Lin, Michael Y, Chiang   +2 more
openaire   +2 more sources

Briarane Diterpenes from the Indian Ocean Gorgonian Gorgonella umbraculum

Journal of Natural Products, 1998
Three briarane diterpenes, junceellin (1), praelolide (2), and compound 3 (of which 3 is new), were isolated from the gorgonian Gorgonella umbraculum (EII & Sol), and their structures were established on the basis of their spectral data.
C, Subrahmanyam, R, Kulatheeswaran, R S, Ward   +2 more
openaire   +2 more sources

A new antifungal briarane diterpenoid from the gorgonian Junceella juncea Pallas

Bioorganic & Medicinal Chemistry Letters, 2011
A new 8-hydroxy briarane diterpenoid (compound 1) with antifungal activity was isolated along with known compounds (2-5) from the gorgonian coral Junceellajuncea. On the basis of spectroscopic data (1D and 2D NMR, MS), the structure of the compound 1 was established as (1S,2S,8S,9S,10S,11R,12R,14S,17R)-11,20-epoxy-14-(3-methylbutanoyl)-2,9,12 ...
Y L N, Murthy, D, Mallika, Abdul, Rajack, G Damodar, Reddy   +3 more
openaire   +2 more sources

ChemInform Abstract: Survey of Briarane‐Type Diterpenoids. Part 4.

ChemInform, 2011
AbstractReview: structures, names and bioactivities of 90 briarane‐type diterpenoids; 45 refs.
Ping‐Jyun Sung, Jui‐Hsin Su, Wei‐Hsien Wang, Jyh‐Horng Sheu, Lee‐Shing Fang, Yang‐Chang Wu, Yung‐Husan Chen, Hsu‐Ming Chung, Yin‐Di Su, Yu‐Chia Chang   +9 more
openaire   +1 more source

ChemInform Abstract: Survey of Briarane‐Type Diterpenoids of Marine Origin

ChemInform, 2002
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.
Ping‐Jyun Sung, Jyh‐Horng Sheu, Jun‐Ping Xu   +2 more
openaire   +1 more source

ChemInform Abstract: Survey of Briarane‐Type Diterpenoids. Part 3.

ChemInform, 2009
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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.
Ping‐Jyun Sung, et al. et al.
openaire   +1 more source

Structure Elucidation of Briarane Diterpenoids Using Molecular Mechanics Calculations

Bulletin of the Chemical Society of Japan, 2006
Abstract A combination of NMR analysis and molecular mechanics calculations has succeeded in the determination of the stereostructure of flexible briarane diterpenoids. The molecular mechanics calculations disclosed the multi-conformational nature of the briarane diterpenoids and gave a successful reproduction of the observed 3J coupling
Yasuto Uchio, Natsuki K Kubota, Takeharu Haino, Yoshimasa Fukazawa   +3 more
openaire   +1 more source