Synthesis of norlignans and in vitro inhibitory activity of antigen-induced degranulation
摘要:
The synthesis and biological evaluation of a series of novel norlignans are described. Norlignans were evaluated for their inhibitory activity on the release of beta-hexosaminidase, a marker of degranulation, from RBL-2H3 cells induced by the IgE-antigen complex. The results showed that norlignans 4c and 4e potently inhibited degranulation, with IC50 values of 18.3 and 17.9 mu M, respectively. (C) 2012 Elsevier Ltd. All rights reserved.
Nyasol and Analogs Thereof for the Treatment of Estrogen Receptor Beta-Mediated Diseases
申请人:Cohen Isaac
公开号:US20090312274A1
公开(公告)日:2009-12-17
Estrogenic compositions comprising nyasol and analogs thereof are provided. Also provided are methods of using said extracts to achieve an estrogenic effect, especially in a human, e.g. a female human. In some embodiments, the methods include treatment of climacteric symptoms. In some embodiments, the methods include treatment of estrogen receptor positive cancer, such as estrogen responsive breast cancer. In some embodiments, the methods include treatment or prevention of osteoporosis.
Composition Comprising the Extract of Anemarrhena Asphodeloides Bunge or the Compounds Isolated from the Same for Preventing and Treating Lipid Metabolism Disorder
申请人:Seo Eun Kyoung
公开号:US20120070515A1
公开(公告)日:2012-03-22
The present invention relates to a composition comprising an extract of
Anemarrhena asphodeloides
Bunge or the compounds isolated from the same, as an active ingredient. In particular, the extract and compounds have the excellent inhibitory effects on adipocyte differentiation, and thus can be used in a pharmaceutical composition and functional food for the prevention and treatment of lipid metabolism disorders.
Structure and Absolute Configuration of Nyasol and Hinokiresinol via Synthesis and Vibrational Circular Dichroism Spectroscopy
作者:Peter R. Lassen、Dorthe Mondrup Skytte、Lars Hemmingsen、Simon Feldbæk Nielsen、Teresa B. Freedman、Laurence A. Nafie、S. Brøgger Christensen
DOI:10.1021/np0502995
日期:2005.11.1
The absoluteconfiguration of the norlignan (+)-nyasol was determined to be S by comparison of the experimental vibrational circulardichroism data with first-principle calculations taking into account the eight lowest energy conformations. The established absoluteconfiguration of (+)-nyasol enables establishment of the absoluteconfiguration of (-)-hinokiresinol, which is concluded to be S. A total
NYASOL AND ANALOGS THEREOF FOR THE TREATMENT OF ESTROGEN RECEPTOR BETA-MEDIATED DISEASES
申请人:Cohen Isaac
公开号:US20120277169A1
公开(公告)日:2012-11-01
Estrogenic compositions comprising nyasol and analogs thereof are provided. Also provided are methods of using said extracts to achieve an estrogenic effect, especially in a human, e.g. a female human. In some embodiments, the methods include treatment of climacteric symptoms. In some embodiments, the methods include treatment of estrogen receptor positive cancer, such as estrogen responsive breast cancer. In some embodiments, the methods include treatment or prevention of osteoporosis.
decarboxylative rearrangement reaction of 4-coumaryl 4-coumarate to generate (Z)-hinokiresinol with complete stereoselectivity. Herein, we describe the mechanism of rearrangement catalysis and the role played by the heterodimeric HRS, through structural and computational analyses. Our results suggest that the HRS reaction is unlikely to proceed via the previously hypothesized Claisen rearrangement mechanism