Antinociceptive effect of extracts and compounds from Hofmeisteria schaffneri
作者:Guadalupe Angeles-López、Araceli Pérez-Vásquez、Francisco Hernández-Luis、Myrna Déciga-Campos、Robert Bye、Edelmira Linares、Rachel Mata
DOI:10.1016/j.jep.2010.07.009
日期:2010.9
exposure for short space of time. On the other hand, the extracts showed significant antinociceptive effect when tested in the hot plate model. The most active natural product as antinociceptive agent was hofmeisterin III (1) which also was the most stable in the stability study. Its pharmacological effect seems to be partially mediated by an opioid mechanism since naloxone inhibits its action. Using compound
Mechanically induced solvent-free esterification method at room temperature
作者:Lei Zheng、Chen Sun、Wenhao Xu、Alexandr V. Dushkin、Nikolay Polyakov、Weike Su、Jingbo Yu
DOI:10.1039/d0ra09437d
日期:——
Herein, we describe two novel strategies for the synthesis of esters, as achieved under high-speed ball-milling (HSBM) conditions at room temperature. In the presence of I2 and KH2PO2, the reactions afford the desired esterification derivatives in 45% to 91% yields within 20 min of grinding. Meanwhile, using KI and P(OEt)3, esterification products can be obtained in 24% to 85% yields after 60 min of
Solid-Phase Benzoylation of Phenols and Alcohols in Microwave Reactor: An Ecofriendly Protocol
作者:Suchandra Chakraborty、Ahana Saha、Kaushik Basu、Chandan Saha
DOI:10.1080/00397911.2015.1078899
日期:2015.10.18
Abstract An efficient solid-phase benzoylation of phenols and alcohols was developed under microwave irradiation. A stoichiometric amount of benzoyl chloride was sufficient to carry out the reaction. This benzoylation features short reaction time, good yields, and easy workup procedures. Furthermore, the scope of the reaction was extended to prepare 3,5-dinitrobenzoyl derivatives of alcohols. GRAPHICAL
Tropolonate Salts as Acyl-Transfer Catalysts under Thermal and Photochemical Conditions: Reaction Scope and Mechanistic Insights
作者:Demelza J. M. Lyons、Claire Empel、Domenic P. Pace、An H. Dinh、Binh Khanh Mai、Rene M. Koenigs、Thanh Vinh Nguyen
DOI:10.1021/acscatal.0c03702
日期:2020.11.6
strong nucleophilicity and photochemical activity, can promote the coupling reaction between alcohols and carboxylic acid anhydrides or chlorides to give products under thermal or blue light photochemical conditions. Kinetic studies and density functional theory calculations suggest interesting mechanistic insights for reactions promoted by this acyl-transfer catalytic system.
Insect repellent compounds and compositions, and methods thereof
申请人:Iowa State University Research Foundation, Inc.
公开号:US11485701B2
公开(公告)日:2022-11-01
The present invention relates to monoterpenoid and phenylpropanoid containing derivative compounds, methods of making the compounds, compositions comprising the compounds, and methods of repelling pests using the compounds and/or compositions.