Compounds and uses thereof for decreasing activity of hormone-sensitive lipase
申请人:——
公开号:US20030166644A1
公开(公告)日:2003-09-04
Use of compounds to inhibit hormone-sensitive lipase, pharmaceutical compositions comprising the compounds, methods of treatment employing these compounds and compositions, and novel compounds. The present compounds are inhibitors of hormone-sensitive lipase and may be useful in the treatment and/or prevention of medical disorders where a decreased activity of hormone-sensitive lipase is desirable.
Abstract Root extracts fromUrticadioica were separated into several classes of compounds by extraction with organic solvents at different pH values. The phenolic fraction was analysed by GC-MS after trimethylsilylation. This procedure allowed the identification of 18 phenolic compounds as well as the detection of eight lignans. The occurrence of some of these substances in this plant was previously
Trichloromethyltrimethylsilane, Sodium Formate, and Dimethylformamide: A Mild, Efficient, and General Method for the Preparation of Trimethylsilyl-Protected 2,2,2-Trichloromethylcarbinols from Aldehydes and Ketones
作者:Jérémy Kister、Charles Mioskowski
DOI:10.1021/jo070180w
日期:2007.5.1
preparation of trimethylsilyl-protected 2,2,2-trichloromethylcarbinols 2 from aldehydes and ketones are reported. Compounds 2, which are important intermediates in organic synthesis, were obtained in excellent yields by use of a combination of trichloromethyltrimethylsilane (TMSCCl3), and a catalytic amount of sodium formate (HCOONa) in dimethylformamide (DMF). Substrates bearing highly sensitive protecting
报道了从醛和酮制备三甲基甲硅烷基保护的2,2,2-三氯甲基羰基化合物2的新条件。通过使用三氯甲基三甲基硅烷(TMSCCl 3)和催化量的甲酸钠(HCOONa)在二甲基甲酰胺(DMF)中的组合,以优异的产率获得了化合物2,这是有机合成中的重要中间体。带有高度敏感的保护基的底物已经成功地经受了我们的条件。我们还描述了一种一锅法,可以直接进入2,2,2-三氯甲基卡宾醇3。这种方法避免了通常使用3的合成所需要的强碱( Wyvratt et al。J.Org。化学。1987年,52,944; Aggarwal和Mereu,J。Org。化学。2000,65,7211)。
Pr(OTf)<sub>3</sub> as an Efficient and Recyclable Catalyst for Chemoselective Thioacetalization of Aldehydes
作者:Surya De
DOI:10.1055/s-2004-834858
日期:——
Praseodymium triflate has been found to be an efficient and recyclable catalyst for chemoselective protection of aldehydes.
三氟甲磺酸镨已被发现是一种高效且可循环的催化剂,适用于醛的选择性保护反应。
The Boron-Wittig Olefination of Aldehydes and Ketones with Bis[(pinacolato)boryl]methane: an Extended Reaction Scope
作者:Maksym Kovalenko、Dmytro V. Yarmoliuk、Dmytro Serhiichuk、Daria Chernenko、Vladyslav Smyrnov、Artur Breslavskyi、Oleksandr V. Hryshchuk、Ihor Kleban、Yuliya Rassukana、Andriy V. Tymtsunik、Andrey A. Tolmachev、Yuliya O. Kuchkovska、Oleksandr O. Grygorenko
DOI:10.1002/ejoc.201900648
日期:2019.9.8
The boron‐Wittig olefination of aliphatic and aromaticketones and aldehydes with bis[(pinacolato)boryl]methane is described. The 2,2‐disubstituted and 2‐monosubstituted alkenylboronic acid esters were obtained on a multigram scale with 35–90 % yield.