Structure–activity relationships of 1′S-1′-acetoxychavicol acetate for inhibitory effect on NO production in lipopolysaccharide-activated mouse peritoneal macrophages
摘要:
1'S-1'-Acetoxychavicol acetate from the rhizomes of Alpinia galanga inhibited nitric oxide (NO) production in lipopolysaccharide-activated mouse peritoneal macrophages with an IC50 value of 2.3 mu M. To clarify the structure-activity relationship of 1'S-1'-acetoxychavicol acetate, various natural and synthetic phenylpropanoids and synthetic phenylbutanoids were examined, and the following structural requirements were clarified. (1) The para or ortho substitution of the acetoxyl and 1-acetoxypropenyl groups at the benzene ring was essential. (2) The S configuration of the 1'-acetoxyl group was preferable. (3) The presence of the 3-methoxyl group and disappearance of the 2'-3' double bond by hydrogenation reduced the activity. (4) The substitution of acetyl groups with propionyl or methyl groups reduced the activity. (5) Lengthening of the carbon chain between the 1'- and 2'-positions reduced the activity. (c) 2005 Elsevier Ltd. All rights reserved.
Structure−Activity Relationships of (1‘<i>S</i>)-1‘-Acetoxychavicol Acetate, a Major Constituent of a Southeast Asian Condiment Plant <i>Languas</i> <i>galanga</i>, on the Inhibition of Tumor-Promoter-Induced Epstein−Barr Virus Activation
the terminal methylenegroup abolishes activity; (3) both the phenolic and alcoholic hydroxyl groups are compulsorily acetylated, and it is necessary that the former is oriented only at the position para to the side chain; (4) an additional acetoxyl group is allowed to locate at the ortho or meta position; and (5) substitution of the hydrogen atom at the 1'-position by a methyl group reduces activity
[EN] ESTROGEN RECEPTOR BETA LIGANDS FOR THE PREVENTION AND TREATMENT OF MULTIPLE SCLEROSIS (MS) AND OTHER DEMYELINATING, INFLAMMATORY AND NEURODEGENERATIVE DISEASES<br/>[FR] LIGANDS BÊTA DU RÉCEPTEUR DES ŒSTROGÈNES POUR LA PRÉVENTION ET LE TRAITEMENT DE LA SCLÉROSE EN PLAQUES (SP) ET D'AUTRES MALADIES DÉMYÉLINISANTES, INFLAMMATOIRES ET NEURODÉGÉNÉRATIVES
申请人:UNIV ILLINOIS
公开号:WO2019226936A1
公开(公告)日:2019-11-28
4-Hydroxyphenyl-2H-indazol-5-ol compounds are estrogen receptor beta ligands that have immunomodulatory properties and increase oligodendrocyte survival, differentiation, and remyelination. The compounds, compositions, and kits are useful in the treatment of multiple sclerosis and endometriosis.
The direct chemoselective carbonylative cross-coupling reaction of allylic alcohols and organoalanes with 1 atm CO via nickel catalysis has been developed to access the β,γ-unsaturated ketones with broad scope. The use of organoalanes as both the coupling components and the activators for the alcohol functionalization was found to be both crucial and advantageous as the method does not require any
已经开发了通过镍催化烯丙醇和有机烷烃与 1 atm CO 的直接化学选择性羰基化交叉偶联反应来获得具有广泛范围的 β,γ-不饱和酮。由于该方法不需要任何外部活化剂,因此发现使用有机丙烷作为偶联组分和醇官能化的活化剂既是关键又是有利的。
An iridium-catalyzedasymmetric synthesis of branched allylic phosphine compounds under mild conditions is reported. Products bearing various functional groups can be synthesized with excellent stereoselectivity (up to 99.9 % ee) and regioselectivity. The employment of phosphine sulfides with relatively low deactivation capacity against metal catalysts is crucial for the success of this reaction.
ESTROGEN RECEPTOR BETA LIGANDS FOR THE PREVENTION AND TREATMENT OF MULTIPLE SCLEROSIS (MS) AND OTHER DEMYELINATING, INFLAMMATORY AND NEURODEGENERATIVE DISEASES
申请人:The Board of Trustees of the University
of Illinois