Cytotoxic Terpenoids from the Formosan Soft Coral Nephthea brassica
摘要:
Two new cytotoxic cembranoid diterpenes, brassicolide (1) and brassicolide acetate (2); a new cytotoxic sesquiterpene, (-)-4 alpha-O-acetyl-selin-11-en (3); and six cytotoxic terpenoids, (-)-selin-11-en-4 alpha-ol (4), 2-hydroxynephthenol (5), nephthenol (6), cembrene A (7), epoxycembrene A (8), and (-)-beta-elemene (9), have been isolated from the Formosan soft coral Nephthea brassica. The structures of compounds 1-9 were determined by spectral, chemical, and X-ray crystallographic analysis.
作者:Adewale Martins Adio、Claudia Paul、Hailemichael Tesso、Petra Kloth、Wilfried A König
DOI:10.1016/j.tetasy.2004.03.030
日期:2004.5
The absolute configuration of the sesquiterpene hydrocarbon helminthogermacrene is established. Helminthogermacrene is an (E,Z)-configurational isomer of germacrene A and thus undergoes similar transformations forming elemenes via Cope rearrangement and yielding bicyclic systems via acid catalyzed reactions. The reaction products are investigated using enantioselective GC and extensive NMR measurements
建立了倍半萜碳氢菊酯马格丁烯的绝对构型。Helminthogermacrene是胚acA的(E,Z)构型异构体,因此会经历类似的转化,通过Cope重排形成elemenes,并通过酸催化反应生成双环系统。使用对映选择性GC和广泛的NMR测量(1 H–;1 H 1 H-COSY; HSQC; HMBC和NOE实验)对反应产物进行了研究。另外,给出了在该研究过程中分离出的相关化合物的NMR数据,该数据尚未在文献中报道。
Dry deodorant containing a sesquiterpene alcohol and zinc oxide
申请人:Brahms John
公开号:US20050191257A1
公开(公告)日:2005-09-01
A suspension product for reducing wetness under the arm which product comprises in % by weight based on the entire weight of the product: (a) 0.01-20% of a superabsorbent polymer with water absorbing capacity between 10-1000 g water/g superabsorber in the absence of added sodium chloride; (b) 0.05-10% of a sesquiterpene material; (c) 0.05-10% of a small particle size zinc oxide having a particle size range of 0.02-200 microns; (d) 2-88% of a volatile silicone, wherein the product is not made with any separately added water.
Sesquiterpenes from the essential oil of the liverwort Conocephalum conicum
作者:Stephanie Melching、Wilfried A König
DOI:10.1016/s0031-9422(98)00769-9
日期:1999.6
Abstract Three new brasilane type sesquiterpenes related to the known alcohol conocephalenol and the sesquiterpene alcohol presilphiperfolan-1-ol were isolated from a chemotype of the liverwort Conocephalumconicum collected in southern Germany and identified by NMR investigations, enantioselective gas chromatography and chemical correlations. In addition ent -(−)-dactylol, the enantiomer of a compound
Cytotoxic Terpenoids from the Formosan Soft Coral <i>Nephthea brassica</i>
作者:Chang-Yih Duh、Shang-Kwei Wang、Ying-Ling Weng、Michael Y. Chiang、Chang-Feng Dai
DOI:10.1021/np990212d
日期:1999.11.1
Two new cytotoxic cembranoid diterpenes, brassicolide (1) and brassicolide acetate (2); a new cytotoxic sesquiterpene, (-)-4 alpha-O-acetyl-selin-11-en (3); and six cytotoxic terpenoids, (-)-selin-11-en-4 alpha-ol (4), 2-hydroxynephthenol (5), nephthenol (6), cembrene A (7), epoxycembrene A (8), and (-)-beta-elemene (9), have been isolated from the Formosan soft coral Nephthea brassica. The structures of compounds 1-9 were determined by spectral, chemical, and X-ray crystallographic analysis.